Kubernetes Jobs in London

We are looking for a hands on AI Engineer to own and evolve the core “brain” service that drives a cutting edge AI product. This role spans architecture, development, optimization, and production operations of real time, multi agent LLM systems.

Role Overview

As an AI Engineer, you will design, build, and operate low latency, real time text and voice agent systems. You will be responsible for multi agent orchestration, advanced reasoning approaches, RAG engineering, and evaluation driven development to ensure production grade quality and performance.

Key Responsibilities

Design, build, and operate low latency real time text and voice agent systems
Implement multi agent orchestration patterns (planner-executor-critic, routing, shared memory)
Apply advanced reasoning methods (ReAct, Chain of Thought, Tree /Graph of Thoughts where appropriate)
Lead RAG engineering with strong grounding, evaluation, and observability
Drive evaluation based development with monitoring, tracing, and CI/CD gating
Ship production grade Python services using FastAPI under strict latency and quality requirements

Minimum Qualifications

5+ years of experience in ML or backend engineering in production environments
Deep expertise in Python, FastAPI, asyncio, and production observability
Experience with low latency text and/or voice systems (LiveKit, Pipecat, WebRTC, or similar)
Hands on experience with LLM systems, agent patterns, and evaluation driven workflows
Prior startup experience

Tech Stack Highlights

Python, FastAPI, asyncio, Redis, Postgres, vector databases, WebRTC/LiveKit, SIP gateways, Docker, Terraform, Kubernetes, OpenTelemetry, DeepEval, GCP

What We Offer

Work on state of the art real time AI agent technology in healthtech
Highly collaborative, senior technical team
Fully remote role based in Barcelona
Fun off sites and strong developer ergonomics

If you are interested please email your CV to for immediate consideration.

Senior Penetration Tester

Starling Bank Limited

About the Role

As an experienced Penetration Tester at Starling, you’ll be joining an established team, working with talented cyber security professionals to ensure our services are designed, developed and operated securely.

This is a collaborative role - you’ll directly interact with multiple areas of the business to understand requirements, conduct research, perform security testing, and report issues aligned to our risk framework.

Being an internal tester, you’ll gain a strong understanding of how technology works at Starling to enable in depth testing. You’ll also support remediation processes, seeing your findings lead to tangible security improvements.

We understand the importance of knowledge and expertise remaining current, so we’ll actively support your advancement through research and training. In turn, you’ll help us continuously improve our processes, methodologies and tools to maintain the highest standard of testing.

We’re open minded when it comes to hiring and we care more about aptitude and attitude than specific experience or qualifications.

Responsibilities

Scoping and performing mobile, web application, cloud and infrastructure penetration tests.
Collaborating with engineering teams to facilitate secure development, including:
- Reviewing and analysing proposed technical solutions to identify appropriate security controls.
- Conducting code reviews of features and critical security components.
- Performing in depth practical security testing.
- Advising on the remediation of security issues and identifying solutions to address root causes.
Automating security testing and developing internal tooling to achieve continuous assurance.
Identifying and implementing improvements to the team’s internal processes and procedures.
Mentoring less experienced team members, leading by example in technical assessments, and promoting a collaborative approach to security across Starling.

Qualifications

5+ years technical information security experience.
Experience in mobile, web application, cloud and infrastructure penetration testing.
Technical knowledge - a good foundation in mobile security (iOS and Android), web application security, networking and associated protocols, cloud security (AWS and GCP), containers and Kubernetes.
A desire to learn, and the ability to apply technical security knowledge to new and unfamiliar areas.
Penetration testing qualifications (e.g. CREST Certified Tester, OSCP) or equivalent industry experience.
Experience performing code reviews or code assisted testing, particularly in Java and Go.
Experience in automation of security testing (e.g. using Python or Go).
Excellent verbal and written communication skills.

Interview Process

First stage with the Penetration Testing Team Lead.
Second stage with additional members of the Penetration Testing team.
Final stage with Infosec Director and CISO.

Benefits

25 days holiday (plus public holiday allowance).
Extra day’s holiday for your birthday.
Annual leave increased with length of service, and you can choose to buy or sell up to five extra days off.
16 hours paid volunteering time a year.
Salary sacrifice, company enhanced pension scheme.
Life insurance at 4 your salary & group income protection.
Private Medical Insurance with VitalityHealth including mental health support and cancer care. Partner benefits include discounts with Waitrose, Mr & Mrs Smith and Peloton.
Generous family friendly policies.
Perkbox membership giving access to retail discounts, a wellness platform for physical and mental health, and weekly free and boosted perks.
Access to initiatives like Cycle to Work, Salary Sacrificed Gym partnerships and Electric Vehicle (EV) leasing.

Equal Opportunities

Starling is an equal opportunity employer, and we’re proud of our ongoing efforts to foster diversity & inclusion in the workplace. Individuals seeking employment at Starling Bank are considered without regard to race, religion, national origin, age, sex, gender, gender identity, gender expression, sexual orientation, marital status, medical condition, ancestry, physical or mental disability, military or veteran status, or any other characteristic protected by applicable law.

Senior Delivery Manager (SC Cleared)

London, United Kingdom Posted on 20/04/2026

Scrumconnect is a leading digital transformation consultancy delivering user-centred, innovative solutions across the UK public and private sectors. We specialise in helping organisations design, build, and scale digital services that make a real impact. Our teams work closely with clients to solve complex challenges using modern technologies, agile methodologies, and a strong focus on user needs.

Role Description

The senior delivery manager will lead the delivery of complex, high-risk digital products and services within the Client’s Digital environment. They will ensure consistent, high-quality outcomes across multidisciplinary teams, driving delivery across a diverse portfolio including legacy system transformation, new service development and live service optimisation. Operating within agile Rainbow Teams, the senior delivery manager will plan, coordinate and manage delivery across multiple workstreams, ensuring alignment with service levels, contractual expectations and GDS standards. They will proactively manage risks, dependencies and performance, maintaining delivery momentum while enabling teams to continuously improve. The role requires strong leadership and the ability to operate across organisational boundaries, working with product, engineering, design and business stakeholders to deliver outcomes that improve access and operational efficiency.

Preferred Tech Stack Expertise

Experience delivering across hybrid environments including Oracle ERP legacy systems and modern digital services
Strong understanding of backend ecosystems including Java, Python, Ruby and PL/SQL with frameworks such as Spring Boot, Django and FastAPI
GOV.UK Design System
Proven experience in AWS cloud environments, including APIs and microservices
Familiarity with container platforms such as Docker and Kubernetes and their impact
Experience managing CI/CD pipelines using GitHub Actions, CircleCI and AWS
Working knowledge of monitoring and alerting tools including Sentry, Kibana, Grafana and Prometheus
Understanding of Secure by Design, Cyber Assessment Framework and GDS delivery standards

Responsibilities

Lead multidisciplinary teams to deliver complex digital products and services
Manage delivery plans, risks, dependencies and timelines across multiple workstreams
Ensure delivery aligns with agile methodologies, GDS standards and organisational processes
Facilitate agile ceremonies and maintain delivery momentum
Act as escalation point for delivery issues, resolving blockers and driving outcomes
Collaborate with product, design and engineering leads to ensure integrated delivery
Promote continuous improvement, high performance and team wellbeing

Clearance: SC clearance required (or willingness to obtain)

Diversity & Inclusion

At Scrumconnect, we are committed to building a diverse and inclusive workplace where everyone feels valued and supported. We welcome applications from people of all backgrounds, experiences, and perspectives, and we believe that diversity drives innovation and better outcomes for our clients and communities.

We are proud to be an inclusive employer and are continuously working to improve accessibility and representation across our teams. If you require any adjustments during the recruitment process, please let us know - we are here to support you.

Role Description

The lead product manager will provide strategic leadership across multiple complex Digital products, ensuring alignment with the Client’s transformation objectives to deliver user centred, secure and scalable digital services. Operating within a multidisciplinary agile environment, the role will own product vision, roadmap and value realisation across services spanning discovery, alpha, beta, live and retirement phases.

The role requires deep expertise in product management within government digital services, including working across legacy systems (such as Oracle ERP) and modern cloud based architectures. The lead product manager will ensure products deliver measurable outcomes aligned to strategic priorities including improved user access, operational efficiency, reduced manual intervention and secure, adaptable technology platforms.

Working within a Rainbow Team model, the role will collaborate closely with delivery managers, user researchers, designers and engineers, influencing senior stakeholders across digital, policy and operational domains to ensure delivery of high quality public services.

Clearance: SC clearance required (or willingness to obtain)

Responsibilities

Define and lead product vision, strategy and roadmap aligned to Client priorities
Own end to end product lifecycle from discovery through to live and retirement
Champion user needs, embedding user centred design and research insights into decision making
Lead prioritisation, ensuring maximum value delivery and alignment with strategic outcomes
Influence senior stakeholders, challenging policy and shaping product direction
Ensure products meet GDS standards, accessibility requirements and security controls
Build and mentor product teams, contributing to a high performing product community

Preferred Tech Stack Expertise

Strong understanding of backend technologies including Java, Python and Ruby with frameworks such as Spring Boot, Django and FastAPI
Experience shaping products across legacy and modern estates, including Oracle ERP, Oracle DB and PL/SQL
Working knowledge of cloud native architectures, particularly AWS, including APIs and microservices
Familiarity with containerisation and orchestration using Docker and Kubernetes
Understanding of CI/CD and DevOps practices using GitHub Actions, CircleCI and AWS CodePipeline
Experience leveraging monitoring and observability tools such as Sentry, Kibana, Grafana and Prometheus
Strong awareness of Secure by Design principles and Cyber Assessment Framework requirements

Diversity & Inclusion

Senior Software Engineer, CalcGraphs - Vice President

Team Overview

XiP is building a next generation cross asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs.

Our team owns multiple Java Spring Boot Services that execute, partition, and track quantitative risk graphs/trades in a distributed environment. These graphs can fail due to their complexity and our system must adapt quickly to these failures to provide a seamless experience for clients.

XiP Compute Services are deployed onto OpenShift and Amazon’s Elastic Kubernetes Service (EKS). An important initiative in 2025 will be onboarding Google’s Kubernetes Engine to further expand our coverage. Our system scales on demand, and we can run up to tens of thousands of replicas of our services across all asset classes.

Role Overview

We are seeking a Senior Engineer to fill the role of “Applications Development Technology Lead Analyst” on the XiNG large scale distributed calculation platform (XiP).

In this role you will design, build, and maintain the calculation engine at the heart of the XiP platform. This engine is responsible for c. 0.5 billion risk & suitability calculations at Citi every day. A single customer run compresses 17 million minutes of compute into a single 90 minute execution.

Run on hundreds of thousands of pods across the entire XiP platform every day, this calculation engine is both highly performant and rapidly changing to support new scenarios, technologies, and infrastructure.

As an engineer working on the calculation engine, you will work closely with software engineers, DevOps, and our customers to ensure reliable, secure, and scalable operations of our platform.

Responsibilities

Take part of the shared responsibility for the long term strategic direction of the XiP Calculation Engine: Apply your experience and skills to develop the future versions of the calculation engine. This means making it faster, utilizing resources better, and scaling to even greater sizes. This means adding new features without impacting performance of the platform in an undesirable manner - small changes multiplied by millions of calculations have a high cost. This means solving hard problems like transferring small amounts of data to a huge number of machines.
Serve as advisor or coach to team members, allocating and overseeing work: Mentor and guide mid level developers, providing technical advice, code reviews, and career development support. Allocate tasks based on skill sets and project priorities, ensuring balanced workloads and timely delivery. Foster a collaborative and growth oriented team environment, encouraging best practices and continuous learning.
Implement changes and improvements to Citi’s Risk Calculation Engine, including analyzing and designing improvements to the distribution mechanisms of the engine which regularly parallelises 250,000 hours of compute into a single 90 minute execution: Lead the design, development, and implementation of enhancements to the Risk Calculation Engine, focusing on optimizing its distribution mechanisms. Analyze current parallelisation strategies and identify opportunities to further improve efficiency, scalability, and throughput.
Operationally support the optimisation of Risk calculations by examining and providing SME level insight into the distributed execution of extremely large calculations: Monitor and analyse the distributed execution of large scale risk calculations, identifying performance bottlenecks and inefficiencies. Provide subject matter expertise to guide operational improvements, leveraging deep technical knowledge to recommend and implement optimisations that enhance calculation speed and resource utilisation.
Plan, coordinate, and execute strategic changes to the engine to reach the next scaling milestone: Develop and manage strategic initiatives aimed at scaling the Risk Calculation Engine to meet future business demands. Coordinate with stakeholders to ensure that all scaling efforts are aligned with customer needs.
Provide specialised customer support to optimise and improve large, distributed calculations: Act as a primary point of contact for clients to address issues and optimise inefficiencies that arise during distributed workload execution.

Qualifications

Multiple years professional software development experience with Java.
Solid experience with Java frameworks (e.g., Spring, Spring Boot, Quarkus).
Experience designing, building, and maintaining large scale, distributed systems.
Experience with RESTful API design and implementation.
Strong understanding of object oriented programming and design patterns.
Exposure to NoSQL databases (e.g., MongoDB, Cassandra) is a plus.
Exposure to cloud platforms (e.g., AWS, Azure, GCP) and containerisation (e.g., Docker, Kubernetes) is desirable.
Experience with unit testing, integration testing, and test automation frameworks (e.g., JUnit, Mockito).
Experience working in Agile/Scrum development environments.
Practical experience with Python for scripting, automation, or data processing tasks.
Experience with CI/CD pipelines and DevOps practices is a plus.

Education

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.

Job Family Group: Technology

Job Family: Applications Development

Time Type: Full time

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, colour, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Senior Backend Engineer

Company Description

Company DescriptionPublicis Media harnesses the power of modern media through leading agency brands Dysrupt, Infinite Roar, Publicis Collective, Publicis Health Media, Spark Foundry, Starcom and Zenith, as well as global accelerator PMX; immersive experience group PMCI and access to integrated platform-based technologies and offerings from CJ, Epsilon and Influential. A key business solution of Publicis Groupe, Publicis Media’s digital-first, data-driven global solutions deliver client value and drive growth in a platform-powered world. It is present in over 100 countries with over 23,000 employees worldwide.

Overview About the Department

Performics is the Performance Centre of Excellence within Publicis Groupe, delivering technology, data, and AI-driven marketing solutions for global brands. OneSuite is our unified marketing intelligence and automation platform powering agentic workflows, data processing, analytics services, and channel automation across Search, Social, Programmatic, Commerce, and Measurement.

Backend engineering is foundational across all OneSuite - providing the APIs, integration layers, orchestration runtimes, and backend systems that power every charter, from Agent Studio to AOE, DFP, Channels, and SRE.

About the Role

We are seeking a Senior Backend Engineer (Individual Contributor) to lead the design, development, and evolution of backend systems across OneSuite. This is a hands on engineering role - you will write production grade code, solve complex distributed systems problems, shape backend patterns, and guide other engineers through technical influence (not supervision).

As a Senior IC, you will help define service architecture, enforce engineering best practices, and collaborate across multiple charters to ensure OneSuite’s backend systems are scalable, reliable, secure, and performant.

Responsibilities

Backend Architecture & System Design

Architect distributed backend services and APIs using Python, FastAPI, Node.js, or equivalent frameworks.
Design modular, observable, and scalable backend components for orchestration, data services, and platform integrations.
Define patterns for microservices, domain boundaries, caching, queuing, resiliency, and error handling.
Build robust service to service communication mechanisms (REST, gRPC, event driven patterns).
Implement secure authentication, authorization, rate limiting, and multi tenant access controls.

Hands On Backend Development

Write high quality, maintainable, production ready code.
Integrate with external APIs (marketing platforms, cloud services, internal microservices).
Build and maintain CI/CD pipelines and infrastructure as code environments.
Lead code reviews, mentor engineers, and ensure high engineering standards.
Contribute to platform SDKs, internal libraries, and backend frameworks used across charters.

Performance, Reliability & Observability

Implement tracing, structured logging, metrics, dashboards, and alerting.
Optimize services for latency, concurrency, throughput, and cost efficiency.
Ensure system reliability through automated testing, load testing, error budgets, and resiliency strategies.
Partner with SRE to define SLIs/SLOs and improve platform wide reliability.

Cross Functional Collaboration

Work closely with Studio, AOE, DFP, Channel, and SRE teams on shared backend designs.
Collaborate with Product Managers and UX research teams to translate requirements into backend capabilities.
Align architecture decisions across charters to ensure consistency and maintainability.

Qualifications

Demonstrable backend engineering experience, with architectural ownership over services or distributed systems.
Expertise in Python, FastAPI, Flask, or Node.js and modern backend development patterns.
Strong understanding of microservices, concurrency, async programming, and event driven architectures.
Proficiency with SQL and NoSQL databases (PostgreSQL, DynamoDB, Redis, MongoDB).
Hands on experience with Docker, Kubernetes, and cloud platforms (AWS or GCP).
Strong CI/CD experience using GitHub Actions, Jenkins, Argo, or similar tools.
Deep knowledge of observability practices - logs, metrics, traces, performance analysis.
Proven ability to write clean, testable, well structured production code.

Qualifications - Nice to Have

Experience with streaming or queuing systems (Kafka, Pub/Sub, SQS).
Familiarity with AI/LLM systems (AOE integration), though not required across all charters.
Knowledge of data engineering patterns or ETL/ELT workflows.
Prior experience with API gateway architectures, caching layers, or service meshes.
Exposure to cybersecurity best practices and secure service design.

Additional Information

Publicis Groupe has fantastic benefits on offer to all of our employees. In the UK, in addition to the classics, Pension, Life Assurance, Private Medical and Income Protection Plan, we also offer:

WORK YOUR WORLD opportunity to work anywhere in the world, where there is a Publicis office, for up to 6 weeks a year.
REFLECTION DAYS - Two additional days of paid leave to step away from your usual day to day work and create time to focus on your well being and self care.
BENEFITS 24/7 helpline to support you on a personal and professional level. Access to remote GPs, mental health support and CBT. Wellbeing content and lifestyle coaching.
FAMILY FRIENDLY POLICIES We provide 26 weeks of full pay for the following family milestones: Maternity, Adoption, Surrogacy and Shared Parental Leave.
FLEXIBLE WORKING, BANK HOLIDAY SWAP & BIRTHDAY DAY OFF You are entitled to an additional day off for your birthday, from your first day of employment.
GREAT LOCAL DISCOUNTS This includes membership discounts with Soho Friends, local restaurants and retailers in Westfield White City and Television Centre.

Full details of our benefits will be shared when you join us!

Publicis Groupe operates a hybrid working pattern with full time employees being office based three days during the working week. We are supportive of all candidates and are committed to providing a fair assessment process. If you have any circumstances (such as neurodiversity, physical or mental impairments or a medical condition) that may affect your assessment, please inform your Talent Acquisition Partner. We will discuss possible adjustments to ensure fairness. Rest assured, disclosing this information will not impact your treatment in our process.

Cloud Native Architect, Portworx (UK - Staines)

Staines, United Kingdom

We’re in an unbelievably exciting area of tech and are fundamentally reshaping the data storage industry. Here, you lead with innovative thinking, grow along with us, and join the smartest team in the industry.

This type of work-work that changes the world-is what the tech industry was founded on. So, if you’re ready to seize the endless opportunities and leave your mark, come join us.

OVERVIEW

The Cloud Native Architect (CNA) is a senior technical leader within the organization. The role owns the technical sales strategy, evaluation approach, and architectural direction for a focused set of the company’s largest and most complex customers. Operating at the intersection of cloud native platforms, business outcomes, and executive decision making, the CNA guides customers through discovery, validation, and financial justification. Each engagement is expected to result in a clear technical win and a credible path to company-wide adoption, positioning Everpure’s product portfolio as a standard platform for cloud native data management. This is a senior individual contributor role within pre sales, centered on influence, quality of execution, and long term outcomes rather than transactional activity.

WHAT YOU WILL DO

The role leads the full cloud native technical sales lifecycle for opportunities, spanning discovery, architectural alignment, workshops, demonstrations, POC or POV execution, and technical wrap up. Ownership includes defining success criteria, guiding validation, and securing the technical decision.
Architectural responsibility centers on Kubernetes centric data platforms that span multiple environments, business units, and regions. Solutions are designed in collaboration with customers and internal stakeholders to ensure alignment between technical design, operational reality, and business objectives.
As the primary technical advisor, the CNA engages senior engineering leaders and executives through briefings, architecture workshops, and steering discussions. Close partnership with account teams and co sellers ensures technical strategy and commercial goals remain aligned.
The role also contributes beyond individual opportunities by mentoring peers, sharing best practices, and participating in thought leadership through customer forums, community events, and industry engagements.

WHAT SUCCESS LOOKS LIKE

Success is reflected in consistent technical wins within complex enterprise opportunities that convert into booked revenue and sustained customer momentum.
Technical sales cycles progress with clarity and pace, supported by strong discovery, well defined success criteria, and disciplined validation. Customers view the CNA as a trusted technical partner rather than a transactional pre sales resource.
Over time, the role contributes to deeper penetration and broader adoption within accounts, expanding footprint and strengthening long term relationships.

WHAT WE NEED FROM YOU

The ideal candidate brings senior level experience in customer facing technical roles within software or platform organizations, with strong exposure to cloud native and Kubernetes based architectures.
Comfort operating at high/enterprise level is essential, along with the ability to translate complex technical capabilities into clear business and financial value. Experience navigating long cycle, multi stakeholder enterprise opportunities is expected.
Strong architectural judgment, clear communication, and the ability to collaborate effectively across sales, product, engineering, and customer facing teams are critical to success.

WHY THIS ROLE

This is a high trust, high impact role with visibility across the company’s key customers and initiatives. The scope is intentionally focused, enabling deep engagement where technical leadership materially influences outcomes.
For architects who want to operate at enterprise scale, shape platform adoption, and play a meaningful role in how modern data platforms are delivered, this position offers both challenge and impact.

WHAT YOU CAN EXPECT FROM US

Innovation: We celebrate those who think critically, like a challenge, and aspire to be trailblazers.
Growth: We give you the space and support to grow along with us and to contribute to something meaningful. We have been named Fortune’s Best Workplaces in Technology , Fortune’s Best Workplaces in the Bay Area , and certified as a Great Place to Work !
Team: We build each other up and set aside ego for the greater good.

We also offer a variety of perks to manage a healthy balance, including flexible time off, wellness resources, and company sponsored team events.

ACCOMMODATIONS AND ACCESSIBILITY

Candidates with disabilities may request accommodations for all aspects of our hiring process. For more on this, contact us at TA if you’re invited to an interview.

OUR COMMITMENT TO A STRONG AND INCLUSIVE TEAM

We’re forging a future where everyone finds their rightful place and where every voice matters. Where uniqueness isn’t just accepted but embraced. That’s why we are committed to fostering the growth and development of every person, cultivating a sense of community through our Employee Resource Groups and advocating for inclusive leadership.

EQUAL OPPORTUNITY EMPLOYER

Everpure is proud to be an equal opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or any other characteristic legally protected by the laws of the jurisdiction in which you are being considered for hire.

Backend Developer - Web/Game Infrastructure (Contract) PRELOADED

Contract: (Hybrid/Remote) Overview

We’re seeking a seasoned Backend Developer with a proven track record in building scalable and robust architectures, and an instinctive understanding of how to deliver seamless digital experiences. You will work closely with the game team and technical leads to create and explore new and exciting backend services, working on groundbreaking projects with cutting-edge technologies. Specifically, you will be implementing and optimising microservices for a high-traffic, digital platform.

Key Responsibilities

Work closely with the Technical team to design and develop scalable and robust microservices.
Collaborate with the wider technical teams/ partners to design and develop data models, APIs, and integration patterns.
Delivering high-performance, secure, and maintainable backend services through technical innovation, creative thinking, and efficient working practices.
Proactive problem-solving skills accompanied by excellent communication skills to express ideas and reasoning to key stakeholders and the team.
Work closely with the production team to inform the project timelines and manage deployments.
Documenting learnings and insights, and providing key technical limitations and concerns to the wider team.

What We’re Looking For

Proven experience with monolithic and microservice architecture at a large scale.
Proficiency in Javascript / C# and a deep understanding of relevant frameworks and libraries.
Experience with cloud platforms (e.g. AWS, Azure) and containerization technologies (e.g. Docker, Kubernetes).
Strong understanding of database design and development, with experience in relational (e.g. MySQL) and non relational (e.g. MongoDB) databases,
Experience in designing and implementing RESTful APIs and/or GraphQL.
Solid understanding of computer science fundamentals (data structures, algorithms, networking) and a proven ability to apply them in creating high-quality, scalable backend systems.
Excellent communicator, team player, and effective problem solver.

Nice to Have

Experience with cloud platforms (e.g. Azure, AWS) and containerization technologies (e.g. Docker, Kubernetes).
Experience with security best practices for backend development.

ABOUT PRELOADED

We are a BAFTA-winning games studio inventing new ways to play for everyone. We harness the power of play to create the experiences of tomorrow.

Founded in 2000, PRELOADED believes that play, in all contexts and for all audiences, has the potential to impact our world positively. As a cross-disciplinary team of artists, designers, play specialists, and creative technologists, we are united by this shared mission - what we call Play with Purpose .

Together, we craft a diverse range of playful experiences. We help organisations, brands, and institutions engage next-generation audiences and collaborate with technology platforms to imagine the future of play.

Learn more about the studio here:

Staff Platform Engineer, UK

Location UK

Employment Type Full time

Location Type Remote

Department Engineering EMEA Engineering

Compensation

L4-L5 (Staff - Sr Staff) - UK - London £138K - £224K • Offers Equity
L4-L5 (Staff - Sr Staff) - UK - London £138K - £224K • Offers Equity

Please read our Engineering Levels and Engineering Compensation resources to learn how we define levels and approach compensation across different locations.

The posted range represents the typical compensation range for this role. To determine actual compensation we review the market rate of each candidate which can include a variety of factors including qualifications, experience, and location. Additional benefits are shared as part of the job posting.

We’re looking for a curious, rigorous, problem-hungry platform engineer (who codes!) to carry the ball as we bring Ashby to the big leagues. Ashby builds software that lets talent teams build an efficient, delightful, respectful hiring process. Similarly, you’re an engineer who wants to build a “paved road” that excellent engineering teams can safely take to the moon and back.

We have notable customers like Notion, Linear, Shopify, and Snowflake. Our growth and retention metrics are best-in-class among our peers: we have tens of millions in ARR, growing >100% year over year, over 2500 customers, very low churn, and many years of runway. We’ll share more details once we meet, but you now probably have a good idea as to why we’re hiring for this role .

We’ve listed this role twice: as a Platform Engineer and Site Reliability Engineer - our team does both, and we are open to candidates who lean towards one or the other.

About the role and how we work Hi I’m Colin, Head of EMEA Engineering. I’ve spent a number of years leading engineering teams in startups, and that has always included being close to infrastructure teams - no matter what name they’ve worn (SRE, infrastructure, platform, etc). I’ve got my hands dirty building the initial infrastructure for startups and know the value a talented infrastructure engineer brings. The rigour, the discipline, the peace and quiet when everything just hums along.

Our infrastructure is in a good place for now. Nothing is static. Ashby continues to grow rapidly, putting strain on our existing infrastructure. We’re always looking to give our customers more powerful hiring software, and building new product features often requires new pieces of infrastructure.

Having herded plenty of snowflakeservers in the past, I’ve learned there’s a better way. I (and Ashby) place a lot of value on infrastructure-as-code. As a Platform Engineer at Ashby, you’ll get to dive into scaling problems, add new capabilities to our platform, and think about how our entire team interacts with infrastructure. All our own engineers own their projects end-to-end and ship with minimal oversight. We don’t put roadblocks to ensure security when common sense will do and we don’t build processes like change management boards around the lowest common denominator. But with great power comes great responsibility: we handle personal and confidential data about some of the biggest decisions we ever make at work. As we grow, more and bigger customers rely on us to be reliable and secure and how we operate internally will need to evolve.

We’re at an inflection point where our ability to scale and deliver a seamless experience has a make-or-break impact - we have some of the fastest growing companies using our platform every day to hire hundreds of people per month. We need someone like you to make good decisions, debug thorny issues, and build us a future-proof platform that can withstand this scale. Our small but mighty infrastructure team has set up a secure and simple environment (we don’t believe in spinning up a new service unless necessary!) for our growing product team to build in. That’s where you come in: you, too, will own projects end-to-end and have an impact on core parts of the Ashby developer and user experience. For instance, you could work on:

Optimize our homegrown ultra-dynamic recruiting DSL-to-SQL compiler, and create tools to help developers do so
Create automated guardrails for the security and privacy of our customer data
Help our developers ship features fast through canary deploys, gradual rollouts and feature flags, while keeping complexity manageable and reducing downtime
Work with the business and the engineering team to define SLOs and implement the corresponding SLIs.
Ensure all communication with external services supports retries and circuit-breakers.
Implement the infrastructure to support an event-driven architecture and data warehouse.

We’re looking for someone who can build systems that an engineer would like to work with: mature and boring but open-minded and approachable. We have to balance reliability with flexibility. Software and its availability are now mission critical to almost every working professional. To be in an SRE in today’s world, you have to be extremely comfortable evaluating risk, those you take and those others take.

Why you should or shouldn’t apply You should apply if:

You never stop. You get weirdly obsessed about a problem that doesn’t yet make sense, turn it every which way in your head until the explanation dawns. You’ll search every rock, inventory every clue, hunt every mismatch. We do that too - together we’ll be armed with state-of-the-art monitoring tools and an impressive amount of data, and join you in the adventure.
You don’t take shortcuts. You’re speaking up for the future user, the edge case, the doomsday design. You know product engineers want to build it with you, and see them as allies, where you give them the power and knowledge to access greater things.
You’re someone who cares about what you do and the team you do it with, and want to work with others who do as well. You’ll be on interview panels choosing your next colleagues, and you’ll take that seriously. You only want to work with people who make you better, and want to make you better.
You’ve built infrastructure at a slightly later stage than Ashby is at - you know how to deal with millions of data points, have seen great (or not great) infrastructure make or break customer experience, and have automated everything from provisioning to monitoring and release process.
You’re a Swiss army knife (all nationalities welcome). You’ll get every hard problem the company faces. You’ll get to do infrastructure updates, security enforcements, database optimization, Kubernetes debugging, and digging through Typescript traces figuring out what doesn’t work. You probably don’t feel like an expert at at least some of that and that appeals to you.

All that makes for a pretty specific kind of role, and the job isn’t to everyone’s tastes! You should not apply if:

You don’t want to make your own decisions on what is the best paved road to build for Ashby, and expect a lead or manager to make the final call on that. Our leads (and managers) give ample commentary and feedback on technical decisions and how they’re made, but you ship what you want to build and are accountable for it.
You hate SQL. We have a lot of features built around making the best out of data, and our platform engineers also sometimes dive into a gnarly report or advise engineers on a more performant data model to use.
You don’t want to code. Our SREs are some of our best software engineers and they are just as responsible for the application as the other engineering teams - albeit at a platform level. Reviewing code and submitting code changes will be part of your day to day.
Your primary mode of communicating best practices to engineers is live meetings. We’re a very async culture and written communication (and code) is how changes get made. As an Ashby SRE, you will need to share new tooling and best practices with engineers faster than your next meeting opportunity will take you.
You’ve never delivered a project, on your own, without someone prodding you for updates. We have no project or delivery managers to fill your calendar with busy work, but the flip side is you have to do your project management, seek the help you need to get unstuck and cut scope when it’s worthwhile.

Technology Stack We share our tech stack with the caveat that we don’t require previous experience in it: TypeScript (frontend & backend), Node.js, React, Apollo GraphQL, Postgres, Redis.

We use Datadog and Sentry on 100% cloud-based (AWS) infra. We take developer experience and reliability seriously: all engineers are on call in a follow-the-sun model, and everyone contributes to developer tooling.

What We’re Building As engineers, we are used to tooling that makes us better at what we do. When we started Ashby, we saw the opposite with Talent Acquisition software. Recruiting teams were leveling up how they did their work, but instead of software meeting this new standard, it held them back.

Scheduling a final round is an excellent example. Recruiting teams wanted to schedule candidates faster, track interviewer preparation and quality, and do it with half the headcount. A recruiter needed to manually collect availability from the candidate, identify qualified interviewers, perform “Calendar Tetris” to find who is available to interview the candidate, schedule on the earliest date possible, and make any last-minute adjustments as availability changed. They must do this while considering the interview load on each individual and whether interviewers need to be trained and shadowing others. TA software didn’t help.

As hiring managers . click apply for full job details

Senior Software Engineer, Unified Platform (Reference Data)

DRW is a technology-driven, diversified principal trading firm. We trade our own capital at our own risk, across a broad range of asset classes, instruments and strategies, in financial markets around the world. As the markets have evolved over the past 30 years, so has DRW - maximizing opportunities to include real estate, cryptoassets and venture capital. With over 2000 employees and offices around the world, we work together to solve complex problems, challenge consensus and deliver meaningful results. It’s a place of high expectations, deep curiosity and thoughtful collaboration.

We are seeking a Senior Software Engineer to join our Unified Platform (UP) organization. UP consolidates data and technologies into a comprehensive solution, accelerating time to market. Optimizing decision making and research, our platform simplifies implementing new ideas, enhancing our competitive edge.

As a Software Engineer on one of the Unified Platform teams, you’ll be part of a tight knit team of software engineers working closely with internal users (analysts, quants, traders) to develop innovative systems that enable research and trading. You’ll experiment with emerging technologies to process data at scale. You’ll wrestle a mountain of data into human understandable insights.

We care deeply about preserving a respectful and diverse team culture. We are a group of polyglots and technologists always seeking to find the right tool for each problem, even if that means learning something new or reviving something old. We value business impact and outcomes over process, and we make decisions based on data. We strive to adapt quickly as business priorities change.

What you’ll do in this role:

Develop tools to enable the business to rapidly embrace new opportunities in global markets
Partner closely with internal customers to understand their needs and build intuitive self service tools
Develop software for large scale data acquisition, storage, accessibility, and visualization
Work with a team to maintain and extend our global markets reach
Learn about market microstructure, financial instruments, and markets in which DRW participates or wants to participate in

This could be a good fit if you:

Are motivated to solve hard problems with deceptively simple solutions
Think a lot about user experience and try to really understand end users’ jobs and pain points
Think a lot about APIs, modular design and testing
Love refactoring and keep trying until you find a better answer
Enjoy making the “right way to do it” the path of least resistance
Have made a random tool for yourself and then peers ask for it then other teams ask for it
Are fiercely proud of your project’s reliability, performance and ease of maintenance
Are excited to learn about financial markets, trading, etc.

What we need on the team:

At least 2 3 years of platform level software development experience
Strong computer science fundamentals; a degree in Computer Science or equivalent work experience
Strong experience with Java, Python or any modern programming language
Experience processing high volumes of data at scale
Excellent analytical and problem solving skills
Comfort working within a globally distributed team
A background in some of the following a bonus:

Java experience
Python experience
Ruby experience
Big data technologies: Spark, Trino, Kafka
Financial Markets experience
SQL: Postgres, Oracle
Cloud native deployments: AWS, Docker, Kubernetes
Observability: Splunk, Prometheus, Grafana

Member of Technical Staff (AI Infrastructure Engineer)

Location

London

Employment Type

Full time

Location Type

Hybrid

Department

We are looking for an AI Infra engineer to join our growing team. We work with Kubernetes, Slurm, Python, C++, PyTorch, and primarily on AWS. As an AI Infrastructure Engineer, you will be partnering closely with our Inference and Research teams to build, deploy, and optimize our large-scale AI training and inference clusters.

Responsibilities

Design, deploy, and maintain scalable Kubernetes clusters for AI model inference and training workloads
Manage and optimize Slurm-based HPC environments for distributed training of large language models
Develop robust APIs and orchestration systems for both training pipelines and inference services
Implement resource scheduling and job management systems across heterogeneous compute environments
Benchmark system performance, diagnose bottlenecks, and implement improvements across both training and inference infrastructure
Build monitoring, alerting, and observability solutions tailored to ML workloads running on Kubernetes and Slurm
Respond swiftly to system outages and collaborate across teams to maintain high uptime for critical training runs and inference services
Optimize cluster utilization and implement autoscaling strategies for dynamic workload demands

Qualifications

Strong expertise in Kubernetes administration, including custom resource definitions, operators, and cluster management
Hands-on experience with Slurm workload management, including job scheduling, resource allocation, and cluster optimization
Experience with deploying and managing distributed training systems at scale
Deep understanding of container orchestration and distributed systems architecture
High level familiarity with LLM architecture and training processes (Multi-Head Attention, Multi/Grouped-Query, distributed training strategies)
Experience managing GPU clusters and optimizing compute resource utilization

Required Skills

Expert-level Kubernetes administration and YAML configuration management
Proficiency with Slurm job scheduling, resource management, and cluster configuration
Python and C++ programming with focus on systems and infrastructure automation
Hands-on experience with ML frameworks such as PyTorch in distributed training contexts
Strong understanding of networking, storage, and compute resource management for ML workloads
Experience developing APIs and managing distributed systems for both batch and real-time workloads
Solid debugging and monitoring skills with expertise in observability tools for containerized environments

Preferred Skills

Experience with Kubernetes operators and custom controllers for ML workloads
Advanced Slurm administration including multi-cluster federation and advanced scheduling policies
Familiarity with GPU cluster management and CUDA optimization
Experience with other ML frameworks like TensorFlow or distributed training libraries
Background in HPC environments, parallel computing, and high-performance networking
Knowledge of infrastructure as code (Terraform, Ansible) and GitOps practices
Experience with container registries, image optimization, and multi-stage builds for ML workloads

Required Experience

Demonstrated experience managing large-scale Kubernetes deployments in production environments
Proven track record with Slurm cluster administration and HPC workload management
Previous roles in SRE, DevOps, or Platform Engineering with focus on ML infrastructure
Experience supporting both long-running training jobs and high-availability inference services
Ideally, 3-5 years of relevant experience in ML systems deployment with specific focus on cluster orchestration and resource management

Backend Engineer - London

Live shows make us feel good. They’re a time to hang with our friends, discover new artists or lose ourselves on a dancefloor. We’re on a mission to bring all of this to more fans, more often - and that’s where you come in.

We’re looking for a Backend Engineer to join our Product team and help build exceptional products for fans, venues and artists.

At DICE, you’ll be part of the company that’s redefining live entertainment. It’s a place where you can be yourself, influence the culture, and create work that you’re proud of.

About the role

DICE is scaling fast and we’ve got ambitious goals for our platforms. As a Backend Engineer, you will have a direct impact on what we build and how we build it, working alongside a very senior team of experts to deliver high quality features.

Our backend apps are written mostly in Elixir. They feed various information to our award winning apps with GraphQL and REST API, and handle millions of transactions for our ticket sales. Our code is hosted in GitHub, pipelines are managed by Drone CI, and we deploy to Kubernetes clusters.

We are always open to making changes and improvements to our workflow and code base, and we will look to you to contribute ideas and grow your skills within our engineering culture.

You’ll be

Designing and developing scalable backend features using Elixir and Phoenix.
Contributing to technical discussions with Product Managers, Engineers, and Designers to understand requirements and provide time estimates.
Collaborating with and learning from a senior team of Elixir experts, actively participating in code reviews and pair programming.
Writing clean, maintainable, and well documented code with strong test coverage.
Troubleshooting production issues and helping to maintain the reliability of our ticketing systems.

You are

A collaborative problem solver who enjoys working in a cross functional team.
Passionate, humble and talented.
A fan of music and culture.
Eager to learn and grow your technical skills in a high performing environment.
Someone who cares about the quality of the software you ship, from unit tests to documentation.
Eager to build apps that make a positive impact on the world.
A great communicator.

You’ll need

Proven experience with Elixir and Phoenix (or experience with another functional language like Ruby/Erlang/Haskell and a genuine desire to master Elixir).
Experience building and maintaining web applications in a production environment.
A solid understanding of database concepts (PostgreSQL) and how to write efficient queries.
Good understanding of how OSes and Linux work internally.
Experience integrating third party APIs and services.
A mindset for shipping business value through iterative development.

About DICE

DICE is based throughout Europe, North America, Australia and India, and is rapidly growing worldwide. We’re constantly innovating to bring amazing products to fans, artists, venues and promoters.

We know that having a variety of perspectives makes us a better company - it’s why we strongly encourage members of underrepresented communities to apply. Find out how we’re creating a more diverse, equitable and inclusive DICE.

Application process

Our process usually involves a quick chat on the phone, a portfolio review or task and a couple of interviews where you’ll meet the people you’ll work with. We’ll keep you fully informed along the way.

For information on how we use your data, please view our Candidate Privacy Policy.

Contract Full Stack Java Engineer

We are recruiting for a Full Stack Java Engineer for a 6 month contract, starting ASAP.

2 days a week in London.

What You’ll Bring To The Table

Solid commercial development experience with strong proficiency in Java and Spring Boot, alongside hands on experience building end to end full stack applications (frontend, backend, and APIs).
Experience working with modern frontend frameworks (e.g. React, Angular, or Vue)
AWS experience (SNS, SQS, S3, DocumentDB, etc)
Kubernetes experience is preferred
An enthusiasm for broadening your skillset and learning new technologies
Commercial experience working with agile methodologies.
Experience dealing with challenges from stakeholders on technical issues and influencing technical decisions in the team.
Understanding and ownership of best practice as a Senior Engineer (eg. TDD, SOLID, XP)
Experience of guiding and supporting junior and mid-level engineers.
Working knowledge of CI/CD practices and deployments.
Experience of writing effective documentation and knowledge sharing.

Equal Opportunities Statement

We are an equal opportunity employer and welcome applications from all qualified candidates. We actively encourage applications from women, ethnic minorities, and individuals with disabilities. We consider all flexible working arrangements, subject to the requirements of the role. Where reasonable adjustments are needed, we will strive to make changes to accommodate them.

Engineer (Application Security)

Dunnhumby is the global leader in Customer Data Science, partnering with the world’s most ambitious retailers and brands to put the customer at the heart of every decision. We combine deep insight, advanced technology, and close collaboration to help our clients grow, innovate, and deliver measurable value for their customers.

Dunnhumby employs nearly 2,500 experts in offices throughout Europe, Asia, Africa, and the Americas working for transformative, iconic brands such as Tesco, Coca Cola, Nestlé, Unilever and Metro.

Overview

We are looking for an Application Security Engineer with a strong engineering mindset-someone who has built and maintained technical systems and understands how products are developed end to end. The ideal candidate may come from a security or product background, but must be deeply familiar with the SDLC, CI/CD pipelines, Git workflows, and modern software engineering practices. This role combines hands on security engineering with enablement, governance, and cross team collaboration.

The Security Engineer will drive application vulnerability management, embed security into development pipelines, and guide engineering teams in building secure by design applications. Strong communication skills and the ability to build trusted relationships across both technical and non technical stakeholders is essential.

Key Responsibilities Application Security

Integrate security best practices into the SDLC and operate, tune, and maintain AppSec tooling (SAST, DAST, SCA).
Provide secure design guidance, perform secure code reviews, reproduce issues, propose fixes, and validate remediations with developers.

Cloud & Kubernetes Security

Embed security checks in CI/CD for container images, IaC, and Helm charts & contribute to runtime protections such as admission controls, policy as code, scanning, and drift detection.
Promote secure infrastructure configurations and Kubernetes defaults (RBAC, network policies, PodSecurity, secrets handling, image provenance).

Vulnerability Management & Reporting

Ensure CI/CD pipelines have robust, effective security coverage and manage exceptions & risk workflows.
Maintain a consolidated vulnerability backlog with clear ownership and SLA tracking and build automated reporting using tools like Power BI or Excel/Pandas.

Enablement & Governance

Develop secure coding standards and practical developer guidance.
Run secure development forums, build and maintain strong relationship with engineering teams and drive application vulnerability management through engagements and reporting.
Act as a trusted advisor to both engineers and leadership - identifying and communicating risk clearly and persuasively.

What You Can Expect From Us

We won’t just meet your expectations. We’ll defy them. So you’ll enjoy the comprehensive rewards package you’d expect from a leading technology company. We also offer personal flexibility, thoughtful perks such as flexible working hours and your birthday off.

You’ll benefit from an investment in cutting edge technology that reflects our global ambition while maintaining a nimble, small business feel that gives you freedom to play, experiment and learn.

Diversity & Inclusion

We don’t just talk about diversity and inclusion. We live it every day - with thriving networks including dh Gender Equality Network, dh Proud, dh Family, dh One, dh Enabled and dh Thrive as the living proof. We want everyone to have the opportunity to shine and perform at your best throughout our recruitment process. Please let us know how we can make this process work best for you.

Flexible Working

We value and respect difference and are committed to building an inclusive culture by creating an environment where you can balance a successful career with your commitments and interests outside of work. Some roles lend themselves to flexible options more than others, so if this is important to you, please raise this with your recruiter.

Software Engineer - Defined Benefits Team

Location: London - hybrid 50%

Contract: Permanent

Hours: Fulltime - 35 hours

Purpose

Support the DB Transformation engineering team in designing, developing, and delivering enterprise grade software built on a Python (FastAPI), React (Next.js), and Azure Kubernetes Service (AKS) stack. This role plays a key part in building our service oriented data platform, ensuring scalability, reliability, and security within a regulated environment. You will work across the stack-from front end applications to containerised services-and help embed DevOps excellence and modern engineering practices across the team.

Key Responsibilities

Deliver high quality, secure and maintainable code using Python, React and TypeScript, aligned to business and architectural standards.
Contribute to the development of a cloud native data platform running on Azure Kubernetes Service, ensuring scalability and reliability.
Design and build RESTful APIs and data integration services using FastAPI, with occasional use of Go where required.
Develop responsive and high performing front end applications using React, Next.js and modern component libraries.
Containerise and deploy applications using Docker and Helm within Kubernetes environments.
Build and maintain CI CD pipelines in Azure DevOps, embedding automation, testing and release quality.
Apply Infrastructure as Code using Terraform and ensure solutions meet security and compliance standards including OWASP and data protection.
Collaborate across engineering and product teams, contribute to Agile practices, support production systems and mentor junior developers.

Examples of Key Activities

Develop and maintain backend services using FastAPI to support core business functions.
Build and enhance React and TypeScript front ends using Next.js, focusing on performance, usability and component reusability.
Design, build and maintain scalable solutions across the Microsoft Power Platform including Power Apps, Dataverse, Power Pages, Power Automate and custom connectors, integrating with Azure services and APIs.
Containerise and deploy applications using Docker and Helm within Azure Kubernetes Service environments.
Extend and manage CI CD pipelines in Azure DevOps, embedding automated testing, linting and security scanning.
Implement monitoring and observability using Azure Monitor, Grafana and structured logging to ensure system reliability.
Define and provision infrastructure using Terraform, while applying secure coding practices and supporting risk and threat assessments.
Collaborate with architecture and engineering teams, contribute to code reviews and testing, and support incident management and continuous improvement.

What we’re looking for Qualifications

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
Desirable - Relevant certifications in Microsoft technologies and Azure are highly desirable.

Experience

Strong experience with React, TypeScript and Next.js alongside Python and SQL Server to build scalable applications.
Proven ability to design and develop RESTful APIs for internal and external integrations.
Hands on experience with Azure services including App Services, Azure SQL, Key Vault and Azure DevOps.
Experience with Docker and Azure Kubernetes Service for containerisation and microservices deployment.
Solid understanding of DevOps practices including CI CD pipeline design and deployment automation.
Familiarity with Infrastructure as Code tools such as Terraform and ARM templates for environment management.
Experience supporting production systems, including incident triage, root cause analysis and resolution of complex issues.
Strong understanding of secure coding practices, OWASP principles, Agile delivery, Git, testing and code review best practices.

Our behaviours

At Just you’ll have the opportunity to develop your career, whilst making a difference to the lives of those around you. You’ll be part of a company with a strong and distinctive culture - we’re ambitious, curious and collaborative - and every decision we make centres around being Just and delivering the best outcomes for our customers.

What’s in it for you

A competitive salary, pension scheme and life assurance.
25 days annual leave plus an additional day on us for your birthday.
Private medical cover and income protection, just in case.
A generous and highly achievable bonus scheme.
Opportunities to progress your career in role and within the company.
Free access to the Headspace app, 24/7 employee assistance helpline and trained physical and mental health first aiders.
A variety of employee funded benefits available via our online benefits portal.
Plus, several additional purchase options available for you and your loved ones.
Valuing diversity of thought and fostering a sense of belonging is critical to our business success, driving innovation and balanced decision making. Our work on DEIB (Diversity, Equity, Inclusion and Belonging) aims to deliver a brilliant employee experience underpinned by a sense of belonging, where our people feel proud to work at Just.
We remain committed to our publicly disclosed HM Treasury Women in Finance Charter and Race at Work Charter targets and support a wide range of employee network and events, championing issues including intergenerational working, social mobility and neurodiversity.

EBSA - IDAM DevOps

Experis - ManpowerGroup

EBSA - IDAM DevOps HO - SFIA 4/5

Rate 650 - 700

Clearance required: Security Clearance (SC) required NPPV3 eligible

Nationality requirement: Single National

Location: London

Sector: Public

Job Description:

Position

Senior DevOps Engineer - Kubernetes & OpenLDAP

Security Clearance (SC) required NPPV3 eligible

Role Summary

Highly experienced DevOps engineer with deep expertise in Kubernetes platform engineering and OpenLDAP integration, operating at senior level. Responsible for designing, implementing, and leading secure, scalable containerised platforms within a regulated environment. Provides hands on technical leadership while managing a small DevOps team delivering test focused CI/CD capabilities.

Core Expertise (Heavy)

Kubernetes (Platform Engineering & Operations)

Cluster design, provisioning, upgrade and lifecycle management
RBAC, network policies, pod security standards
Ingress controllers, service mesh integration
Multi-environment strategy (Dev/Test/Prod)
Troubleshooting complex production issues
Helm/Kustomize-based deployments
Performance tuning and resilience engineering

OpenLDAP (Enterprise Identity Integration)

Installation, configuration and hardening of OpenLDAP
Schema design and directory structuring
Secure authentication integration (LDAPS, certificates, RBAC mapping)
Kubernetes authentication via LDAP
Identity federation patterns across CI/CD tooling
High availability and replication strategies
Troubleshooting directory performance and sync issues

Jenkins (CI/CD Architecture & Engineering)

Pipeline-as-code (Groovy)
Shared libraries and pipeline governance
Integration with Kubernetes agents
Secure credential management
Test automation integration
Release orchestration

Strong Working Knowledge (Moderate)

Docker - image optimisation, multi stage builds, secure base images
Python - automation, scripting, infrastructure tooling

Working Knowledge (Light)

AWS - IAM, networking concepts, container services
Terraform - infrastructure as code principles, module consumption

Team Leadership

Accountability for individual engineer performance, development and delivery
Regular performance feedback and coaching
Skills development and knowledge uplift within the team

Delivery & Governance

Point of contact for DevOps related requests
Assist the tech lead with technical design authority for incoming work
Oversight and governance of production releases
Ensuring secure delivery aligned to SC cleared environment requirements

Key Characteristics

Operates independently within defined frameworks (SFIA Level 4)
Provides technical leadership and direction
Makes informed decisions in complex secure environments
Strong stakeholder communication skills
Security first mindset suitable for government / regulated environments

This role requires additional vetting, which means this position may take longer than the usual onboarding process. Please do not hesitate to get in touch if you have any queries.

Senior Back End Developer - Java and AWS (27629)

This company is developing an AWS-based platform to securely share medical diagnostics between clinicians and researchers worldwide, and enable online characterisation and measurements from scan images. This will feed into a better understanding of disease processes and ultimately better treatments for patients.

The back end of their technology stack comprises Java-based microservices running on AWS. Data security and integrity is of paramount importance, and the solution needs to be compliant with healthcare industry software standards - we are therefore keen to hear from applicants with relevant experience in healthcare technology.

Success in this senior role calls for excellent software development skills in Java (or a closely related OO language), and a strong understanding of AWS is essential. You will also need excellent communication and collaboration skills, and be proactive in understanding the needs of stakeholders and how their underlying needs feed into the software requirements.

Qualifications and Experience

A solid academic background with a degree in Computer Science, or a similar subject.
Substantial commercial software engineering experience and familiarity with Agile development processes, CI/CD, and software testing strategies.
Strong coding skills, ideally in Java, a good understanding of the AWS ecosystem, and careful attention to writing high quality code.
Full, existing, and unrestricted right to work in the UK without the need for sponsorship either now or in future.

Nice to Haves

Docker, Kubernetes, Infrastructure-as-code, DynamoDB, Spring Boot, Gradle.
Experience working under software engineering standards for healthcare such as ISO14385.

This is a mostly remote role, with occasional days on site at the company’s offices in London. You will therefore need to be based in the UK within a convenient travel distance.

This role has a positive and tangible real-world impact, and you will be working with a friendly mission driven team motivated to accelerate medical research for the benefit of patients. An excellent salary, options scheme, and benefits package are on offer to the successful candidate.

Senior Software Engineer, CalcGraphs - Vice President

Team Overview

XiP is building a next-generation cross-asset calculation system for Citi trading desks and enterprise users in the largest global financial markets and exchanges in New York, London, and other major financial hubs.

XiP Compute Services are deployed onto OpenShift and Amazon’s Elastic Kubernetes Service (EKS). An important initiative in 2025 will be onboarding Google’s Kubernetes Engine to further expand our coverage. Our system scales on-demand, and we can run up to tens of thousands of replicas of our services across all asset classes.

Role Overview

We are seeking a Senior Engineer to fill the role of ‘Applications Development Technology Lead Analyst’ on the XiNG large scale distributed calculation platform (XiP).

Run on hundreds of thousands of pods across the entire XiP platform every day this calculation engine is both highly performant and rapidly changing to support new scenarios, technologies, and infrastructure.

As an engineer working on the calculation engine. You will work closely with software engineers, DevOps, and our customers to ensure reliable, secure, and scalable operations of our platform.

Responsibilities

Take part of the shared responsibility for the long-term strategic direction of the XiP Calculation Engine: Apply your experience and skills to develop future versions of the calculation engine. This means making it faster, utilizing resources better, and scale to even greater sizes. Adding new features without impacting performance of the platform in undesirable manner. Solve hard problems like transferring small amounts of data to a huge number of machines.
Serve as advisor or coach to team members, allocating and overseeing work: Mentor and guide mid-level developers, providing technical advice, code reviews, and career development support. Allocate tasks based on skill sets and project priorities to ensure balanced workloads and timely delivery. Foster a collaborative and growth-oriented team environment.
Implement changes and improvements to Citi’s Risk Calculation Engine, including analyzing and designing improvements to the distribution mechanisms: Lead the design, development, and implementation of enhancements to the Risk Calculation Engine, focusing on optimizing its distribution mechanisms. Analyze current parallelization strategies and identify opportunities to improve efficiency, scalability, and throughput.
Operationally support the optimization of Risk calculations by examining and providing SME level insight into the distributed execution of extremely large calculations: Monitor and analyze distributed execution of large-scale risk calculations, identifying performance bottlenecks and inefficiencies. Provide subject matter expertise to guide operational improvements and recommend optimization to enhance calculation speed and resource utilization.
Plan, coordinate, and execute strategic changes to the engine to reach the next scaling milestone: Develop and manage strategic initiatives aimed at scaling the Risk Calculation Engine to meet future business demands. Coordinate with stakeholders to ensure that all scaling efforts are aligned with customer needs.
Provide specialized customer support to optimize and improve large, distributed calculations: Act as a primary point of contact for clients to address issues and optimize inefficiencies during distributed workload execution.

Qualifications

Multiple years professional software development experience with Java.
Solid experience with Java frameworks (e.g., Spring, Spring Boot, Quarkus).
Experience designing, building, and maintaining large-scale, distributed systems.
Experience with RESTful API design and implementation.
Strong understanding of object-oriented programming and design patterns.
Exposure to NoSQL databases (e.g., MongoDB, Cassandra) is a plus.
Exposure to cloud platforms (e.g., AWS, Azure, GCP) and containerization (e.g., Docker, Kubernetes) is desirable.
Experience with unit testing, integration testing, and test automation frameworks (e.g., JUnit, Mockito).
Experience working in Agile/Scrum development environments.
Practical experience with Python for scripting, automation, or data processing tasks.
Experience with CI/CD pipelines and DevOps practices is a plus.

Education

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Test Environment Manager

Location: Croydon (occasional), Bromley (occasional), Mostly remote

Job Type: Full-Time

Start Date: June

Overview

We are seeking an experienced Test Environments Manager to lead the design, delivery and ongoing management of our cloud based test environments. This is a critical role that ensures secure, reliable and scalable environments are available to support client testing and development activities across multiple projects.

The successful candidate will have a strong technical foundation in cloud platforms and test environment configuration, combined with the ability to plan, coordinate and optimise environments in a fast paced, delivery focused setting. You will work closely with development, testing and delivery teams to ensure environments are provisioned efficiently, maintained to a high standard and aligned with project timelines and quality expectations.

Key Responsibilities

Design, configure and manage cloud test environments to support development and testing of large integrated software products.
Collaborate with IT, software development, and quality assurance teams to understand requirements and ensure that environments meet their testing needs, in particular third party integrations are mapped to appropriate test environments.
Develop and implement strategies for provisioning, deploying, and decommissioning test environments with a focus on automation and scalability.
Ensure continuous availability of critical test environments and troubleshoot any issues that arise.
Create and maintain detailed documentation for environment configuration baselines, processes, and service records.
Aligning test data and user access needs across multiple cloud environments.
Implement best practices and policies for managing cloud resources, including security compliance and data integrity.
Coordinate with vendors and service providers to enhance cloud solutions and resolve any issues related to cloud environments.
Manage the release governance for all test environments, liaising with environment owners, DevOps, delivery teams and stakeholders.
Support by mentoring junior members of our QA team

Required Skills and Qualifications

Ability to collaborate with cross functional teams, including product managers, designers, and other stakeholders.
Experience in managing and optimising budgets for cloud test environments.
Experience in recording and maintaining environment baseline configurations.
Expert level attention to detail across multiple test environments and phase
Ability to diagnose and resolve problems with the test environment and has a methodical and analytical approach to problem solving.
Strong knowledge & experience with AWS cloud platform
Experience with infrastructure as code tools (e.g., Terraform, Ansible) and CI/CD pipelines.
Proficient in observability/monitoring of test environments
Demonstrable ability to manage projects, including planning, scheduling and execution.
Mentoring and leadership skills to foster a culture of continuous improvement and knowledge sharing.

Preferred Qualifications

Certifications in AWS cloud technologies, a min AWS qualification of Solutions architect Associate
Knowledge of containerisation technologies like Docker and Kubernetes.
Experience in a DevOps culture promoting collaboration, automation, and monitoring.
Certifications such as ISTQB Advanced or similar

Why Apply?

Fantastic culture with regular social events.
Up to 5% employer pension contribution
25 days holiday + UK Bank Holidays
L&D: Budget for conferences, training courses and other materials.

CACI is proud to be an equal opportunities employer. Embracing the diversity of our people, we are on a journey to build a truly inclusive work environment where no one is treated less favourably due to ethnic origin, age, sex, gender identity, veteran status, religion or belief, sexual orientation, marital status, and disability or health condition, actively working to prevent discrimination.

As a Disability Confident employer, we will;

Provide reasonable adjustments in the recruitment process where requested (contact a member of the recruitment team on to discuss individual requirements further)
Offer people with health conditions and disabilities, meeting the minimum criteria for a role an interview.

Our people are unique and we encourage and support them to be confident in contributing to our inclusion journey.

The Role

As a Software Architect / Solutions Architect at Air Apps, you will be responsible for defining and overseeing the overall system architecture for our AI-powered platform. You will collaborate with engineering teams, product managers, and stakeholders to design scalable, secure, and high-performing solutions that align with business objectives.

You will play a key role in shaping our technology strategy, evaluating new tools and frameworks, and ensuring best practices in software design, cloud infrastructure, and system integration.

This is a fully onsite position, based at our office in Lisbon, where you will collaborate closely with cross-functional teams in person and contribute to a dynamic and fast-paced environment. We are open to support with relocation efforts.

Responsibilities

Define and maintain the overall architecture and system design for scalable and efficient software solutions.
Provide technical leadership to engineering teams, guiding them in best practices for architecture, coding, and system scalability.
Design and document high-level system diagrams, data flows, and API structures.
Evaluate and recommend technologies, frameworks, and cloud services to optimize performance, security, and cost-efficiency.
Ensure high availability, fault tolerance, and security in all architectural decisions.
Oversee system integrations, including microservices, APIs, and third-party services.
Work closely with DevOps and SRE teams to ensure smooth deployment and operational reliability.
Establish coding and architecture standards, ensuring maintainability and scalability of codebases.
Identify and mitigate technical risks, ensuring system resilience and future scalability.
Conduct architecture reviews and performance audits to continuously improve system efficiency.

Requirements

Around 6+ years of experience in software development and architecture.
Strong expertise in system design, cloud computing, and microservices architecture.
Experience with cloud platforms (AWS, Azure, or Google Cloud Platform) and cloud-native architectures.
Proficiency in backend technologies (e.g., Node.js, Python, Java, .NET) and experience with modern frontend frameworks (e.g., React, Angular, Vue).
Knowledge of databases (SQL and NoSQL), caching strategies, and data pipelines.
Experience with event-driven architectures, API design, and containerization (Docker, Kubernetes).
Strong understanding of security best practices, identity management, and encryption techniques.
Ability to evaluate trade-offs in architectural decisions, balancing scalability, cost, and complexity.
Familiarity with DevOps, CI/CD pipelines, and Infrastructure as Code (Terraform, CloudFormation).
Strong communication skills, with the ability to explain complex architectural concepts to technical and non-technical stakeholders.

What benefits are we offering?

Apple hardware ecosystem for work.
Annual Bonus
Top-tier Health and Life Insurance for peace of mind.
Transportation Budget to support your commute needs.
Coverflex benefits package for meal allowances, well-being, and more.
Childcare support.
Air Conference - an opportunity to meet the team, collaborate, and grow together.
Pension Fund to support your long-term financial planning.
Urban Sports Club membership to keep you active.
Meals 100% free at the hub.

Diversity & Inclusion

At Air Apps, we are committed to fostering a diverse, inclusive, and equitable workplace. We enthusiastically welcome applicants from all backgrounds, experiences, and perspectives. We celebrate diversity in all its forms and believe that varied voices and experiences make us stronger.

DTN Software Engineer - Spacetime UK

Aalyria Technologies, Inc.

Aalyria is a leading technology company that supplies laser communications technology and temporospatial software-defined networking platforms to the aerospace industry. With technology acquired from Google, Aalyria is at the forefront of innovation in satellite and airborne mesh networks, as well as cislunar and deep-space communications. We are revolutionizing the orchestration and management of planetary mesh networks using any radio or optical spectrum, any orbit, and any hardware across land, sea, air, and space.

Role Overview:

As a DTN Software Engineer, you will be part of the UK R&D team to support the development of new and innovative features. You will work with other software engineers to evolve our DTN capability, including the Hardy bundle router, and integration with the Spacetime platform, to build features that solve impactful problems for our customers and partners that will change how communication networks are operated around the world. The ideal candidate should have experience with the DTN stack, distributed systems with cloud technologies, and solutions to networking, storage, queueing and other systems challenges.

Key Responsibilities:

Develop and maintain the DTN products, platforms and APIs using Rust, gRPC, and Protocol Buffers
Build a scalable and distributed system on Kubernetes
Participate in the entire application lifecycle, focusing on coding and debugging
Manage cutting-edge technologies to improve legacy applications
Collaborate with Front-end developers to integrate user-facing elements with server side logic
Gather and address technical and design requirements
Follow emerging technologies
Create and deliver technical content, including documentation, tutorials and sample code, to assist developers and customers in understanding and utilizing ‘The Relay Network’
Assist the onboarding process for new customers, providing guidance and support to ensure successful integration of their existing and future systems
Optimizing the performance of applications for full-scale production deployments

Required Qualifications:

Bachelor’s degree in computer programming, computer science, or a related field
Strong technical communication skills, and ability to communicate across multiple functions.
High-curiosity for both business and technology strategies, processes, and objectives (pushing past surface-level understanding to gain a granular command of different ecosystems)
Experience working with customers/end-users answering questions and coming up with creative solutions
A strong desire to pitch and sell our amazing technology!

Preferred Qualifications:

Experience designing and implementing scalable and distributed microservice and/or event-driven software architectures
Experience writing scalable software, bolstered with unit and integration testing, leveraging language-specific strengths (e.g. concurrency control), integrating it with various CNCF technologies, and containerising it
Experience with delay-tolerant networking
Familiarity with delay-tolerant networking communications standards and protocols (e.g. CCSDS/IETF BPv7, BPSec, etc.)
Experience creating technical content such as documentation, tutorials, or blog posts
Experience with cloud platforms and services such as Google Cloud Platform or AWS

If you are a passionate and driven Software Engineer with a strong focus on Developer Relations and customer onboarding, ready to engage with developers, promote Spacetime, and ensure a successful developer and customer experience, Aalyria is the perfect place for you. Apply today and join our team of innovative professionals.

What We Offer:

Innovative Environment: Work at a cutting-edge company shaping the future of aerospace communications.
Impactful Work: Directly contribute to critical national security programs and initiatives.
Growth Opportunities: Expand your career with opportunities for professional development and advancement.
Inclusive Culture: Be part of a collaborative, supportive, and inclusive workplace where your contributions matter.
Flexibility: Flexible working arrangements including hybrid remote/in-office schedules.
Compensation and Equity: Competitive salary, comprehensive benefits (401(k), dental, vision, health, life insurance), paid time off, and equity options.
Pension
Health insurance
Equity

Work Requirements & Location:

Applicants must have the right to work in the United Kingdom.
Work Location: Remote working within the UK.

Equal Opportunity Employer Statement:

Aalyria is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate based on race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Qualified applicants from all backgrounds are encouraged to apply.

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Frequently asked questions

London offers a wide range of Kubernetes roles including DevOps Engineer, Site Reliability Engineer (SRE), Cloud Engineer, Kubernetes Administrator, and Platform Engineer positions across various industries.

Employers typically seek skills such as container orchestration with Kubernetes, Docker, cloud platforms like AWS, GCP or Azure, CI/CD pipelines, infrastructure as code (Terraform, Helm), and strong Linux system administration.

Yes, some companies offer junior or entry-level positions for candidates with a foundational understanding of Kubernetes, particularly if they have related skills in cloud computing or Linux administration.

Kubernetes professionals in London can expect a salary range typically between £50,000 to £90,000 per year, with more senior or specialized roles potentially earning above this range.

To improve your chances, gain hands-on experience with Kubernetes clusters, obtain relevant certifications like CKAD or CKA, stay updated with cloud provider integrations, and showcase your expertise through projects or contributions to open source.