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Discover top AWS jobs on Haystack, the leading IT job board for cloud professionals. Whether you're an AWS architect, developer, or engineer, find your next opportunity with roles from top employers seeking expertise in Amazon Web Services. Start your AWS career today and connect with jobs that match your skills and ambition.
AI Engineer
S Knights Recruitment
London
Fully remote
Mid - Senior
£60,000 - £80,000
RECENTLY POSTED

Salary: £60,000 – £80,000
Location: Remote (London)

What if your AI systems didn’t just predict clicks or optimise ads, but decided whether someone was qualified to enter a profession? This is a rare opportunity to build high-impact AI assessment systems that directly influence education, certification, and access to skilled careers. You’ll work at the intersection of LLMs, evaluation science, and real-world decision-making, owning systems where accuracy, fairness, and trust truly matter.

About the Company

You’ll be joining a UK-based AI company transforming workforce certification and assessment. Their mission is to make education and professional accreditation more accessible, fair, and scalable through intelligent automation.

This is a small, highly capable, and pragmatic team where engineers have real ownership. There’s no heavy bureaucracy—just smart people solving meaningful problems. You’ll have genuine influence over technical direction, architecture, and product outcomes, while working closely with domain experts shaping the future of assessment.

What’s in it for you:

*

High autonomy and trust in your technical judgement

*

Work on socially meaningful problems with real-world impact

*

End-to-end ownership of production AI systems

*

A collaborative, low-ego engineering culture

*

Exposure to cutting-edge LLM evaluation, multimodal AI, and human-in-the-loop systems

About the Job

As an AI Engineer, you’ll design and deploy intelligent auto-assessment systems that evaluate knowledge and skills at scale.

Your work will include:

*

Building AI-powered assessment pipelines using marking rubrics, example answers, SME feedback, and historical scoring data

*

Designing robust evaluation frameworks, golden datasets, and regression tests aligned to marking criteria

*

Experimenting with and optimising LLM workflows, balancing accuracy, latency, and cost

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Applying statistical testing to rigorously compare model performance and validate improvements

*

Developing multimodal workflows that analyse text, images, and video for accurate scoring

*

Generating clear, actionable feedback for learners, including confidence signals and rationales

*

Instrumenting systems with observability, tracing, and online evaluation

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Designing guardrails such as confidence thresholds and human review pathways

*

Building APIs and production-ready systems on cloud infrastructure

*

Helping shape the overall AI architecture and technical direction

You’ll own the full model lifecycle, from data preparation and experimentation through to deployment and continuous improvement.

Ideal Candidate

You don’t need to tick every box, but you’ll likely bring most of the following:

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4+ years’ experience in ML or AI engineering, or a relevant PhD with applied industry experience

*

Proven experience owning end-to-end model lifecycles in production

*

Strong independence and confidence making technical decisions

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Hands-on experience with LLMs and agentic workflows

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Excellent Python skills

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Experience building APIs

*

Deep experience designing evaluation frameworks and tuning model performance

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Familiarity with experiment tracking, observability, and human-in-the-loop systems

*

Cloud deployment experience (AWS preferred)

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A strong understanding of fairness, auditability, privacy, and system integrity

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Comfort working in a small, fast-moving environment

Nice to have: experience in EdTech, assessment systems, NLP, multimodal AI, or automated scoring.

Apply Now

If you’re excited by the idea of building AI systems that make real, high-stakes decisions—and you want the autonomy to shape how those systems are built, this role is well worth exploring. Apply now or get in touch for a confidential conversation to learn more

Software Implementation Lead
Robert Walters
Warwick
Hybrid
Senior
£60,000 - £65,000
RECENTLY POSTED

Robert Walters is working in partnership with a national fast growing business. They are recognised as market leaders at the forefront of innovation, transforming industries through cutting-edge solutions. They ensure their solutions redefine how businesses operate by delivering smarter and more efficient systems.

Due to a large-scale digital transformation, they are keen to appoint a Software Implementation Lead paying a salary range up to £65,000 with a hybrid working model from the Warwick offices.

Software Implementation Lead: Duties

  • Product development knowledge is essential
  • Lead key strategic software projects for clients
  • Combination of building requirements from BA’s, PM’s and client-side leads
  • Translate requirements into technical requirements
  • Lead product/software implementation from build, test, QA and deployment
  • Client facing: working with requirements and challenges
  • Challenge development teams - correct architecture current processes
  • Strong knowledge of the software development life cycle

Software Implementation Lead: Technical Experience

  • 3rd Party API Integration
  • React, Node, React Native
  • AWS
  • Jira
  • AI - willing to leverage

The permanent role for a Software Implementation Lead will pay a salary range up to £65,000 with a hybrid working model from the Warwick offices. This is an opportunity to join an industry leader that has grown year on year.

For further information, please apply with an updated CV and reach out to Ajay Hayre on (see below)

Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates

Senior Site Reliability Engineer
Outsource
London
Hybrid
Senior
Private salary
RECENTLY POSTED
+2

Client: Globally known Technology and entertainment company! Location: London- Hybrid working Contract Dates: ASAP Start- 12-month contract Pay : TBC (Will be day rate) Role Overview We are seeking a Senior Site Reliability Engineer to drive the reliability, scalability, and operational excellence of Network commerce systems, including subscriptions and personalization services. You will collaborate closely with product and engineering teams to enhance system architecture, deployment safety, observability, and overall performance. As part of the centralized Technical Operations team, you will have horizontal responsibility for production reliability, participate in the on-call rotation for critical commerce services, and influence systems that serve millions of users globally. Key Responsibilities Reliability & Risk Engineering Identify systemic reliability risks and implement preventative solutions. Define and maintain SLIs, SLOs, and error budgets aligned with business and user outcomes. Lead incident management, post-incident reviews, and remediation planning. Architecture & Resilience Review and advise on system architecture to improve scalability, availability, and fault isolation. Design strategies for high availability, graceful degradation, and disaster recovery across multi-region environments. Quantify trade-offs between performance, cost, and operational risk. CI/CD & Deployment Safety Enhance deployment pipelines and implement automation to reduce risk and accelerate delivery. Apply safe deployment patterns such as canary, blue/green, and progressive delivery. Ensure robust rollback and recovery mechanisms. Observability & Performance Build and evolve monitoring, logging, and tracing solutions to provide actionable insights. Collaborate to reduce alert fatigue and improve signal quality. Diagnose performance bottlenecks across infrastructure and applications. Infrastructure & Automation Operate cloud-native and containerized workloads at scale. Use Infrastructure as Code tools to deploy and manage resilient platforms. Develop automation frameworks to reduce manual toil and operational risk. Leadership & Mentorship Mentor mid-level engineers and advocate SRE best practices across teams. Partner with engineering, product, and security teams to embed reliability into system design. Required Qualifications Bachelor's degree in Computer Science, Engineering, or equivalent experience. 7+ years in site reliability, production engineering, or systems engineering roles. Strong understanding of distributed systems, consistency models, failure modes, and fault isolation strategies. Hands-on experience with AWS, GCP, or Azure, including multi-region deployments. Proficiency in Kubernetes and large-scale container orchestration. Programming experience in Go, Python, or Java, building automation or reliability systems. Experience designing and operating CI/CD pipelines with deployment safety guardrails. Proven track record leading high-severity incidents and driving systemic remediation. Excellent interpersonal skills with experience influencing cross-team decisions. Preferred Qualifications Experience with multi-cloud or multi-region resilience architecture. Proficiency in monitoring and observability tools (Prometheus, Grafana, Datadog). Prior mentorship or technical leadership experience. Familiarity with Infrastructure as Code tools (Terraform, CloudFormation). Experience using AI-assisted tools for incident analysis, operational efficiency, or observability. If this sounds like you apply now by sending your CV to TPBN1\_UKTJ

VMWare Engineer - Inside IR35
Adecco
Manchester
Hybrid
Senior
£525/day - £550/day
RECENTLY POSTED
+4

VMWare Engineer

Rate - £525 - £550 (Daily)

Location - Manchester (Hybrid)

Duration - 4 Months (Initially)

Ir35 - Inside (Must use an umbrella company)

We are seeking a Senior VMware Engineer (Contractor) with a minimum of 5 years of hands-on experience provisioning and managing Linux and Windows virtual machines in enterprise VMware environments. This is a contract engagement supporting a higher education institution’s virtual infrastructure modernisation and operational support initiatives.

The contractor will provide advanced engineering expertise across VMware Cloud Foundation (VCF), VMware ESXi, VMware vSphere, and VMware NSX-T, ensuring stability, scalability, and performance of mission-critical academic and research systems.

Scope of Work

  • Provision, configure, and manage Linux and Windows VMs in enterprise clusters.
  • Deploy and manage workloads within VMware Cloud Foundation environments.
  • Install, configure, patch, and upgrade VMware ESXi hosts.
  • Administer and optimise VMware vSphere clusters, including HA, DRS, and vMotion.
  • Design and manage network virtualisation using VMware NSX-T.
  • Perform VM life cycle management (build, template creation, cloning, migration, decommissioning).
  • Conduct performance monitoring, capacity planning, and resource optimisation.
  • Support storage integration (SAN/NAS/vSAN) and ensure optimal IOPS performance.
  • Implement and support backup, replication, and disaster recovery solutions.
  • Provide advanced troubleshooting and root cause analysis.
  • Document architecture, configurations, and operational procedures.
  • Collaborate with infrastructure, security, networking, and research computing teams.

Deliverables

  • Fully provisioned and optimised virtual machine environments.
  • Updated and documented VMware architecture diagrams and configurations.
  • Performance optimisation and capacity planning reports.
  • Resolved infrastructure incidents within agreed SLAs.
  • Knowledge transfer documentation and handover sessions (if required at contract completion).

Required Experience & Skills

  • Minimum 5+ years of enterprise VMware engineering experience.
  • Proven track record provisioning Linux (RHEL, Ubuntu, etc.) and Windows Server VMs.
  • Strong hands-on expertise in VCF, ESXi, vSphere, and NSX-T.
  • Experience in higher education, research institutions, or large multi-tenant environments preferred.
  • Solid understanding of storage, networking, and security integration.
  • Automation and Scripting skills (PowerCLI, PowerShell, Bash, Python).
  • Experience with vCenter administration and cluster design.
  • Strong troubleshooting and performance tuning capabilities.

Preferred Qualifications

  • VMware certifications (VCP-DCV, VCAP).
  • Experience with automation/orchestration (VMware Aria/vRealise, Ansible).
  • Hybrid cloud experience (Azure, AWS, VMware Cloud).
  • Experience supporting research computing or HPC workloads.
  • Familiarity with ITIL-based change management processes.

Contractor Expectations

  • Ability to work independently with minimal supervision.
  • Deliver results within defined project timelines.
  • Participate in change advisory board (CAB) meetings as required.
  • Provide regular status updates to project stakeholders.
  • Availability for occasional after-hours maintenance windows.
AWS Data Engineer (contract)
Opus Recruitment Solutions
London
Hybrid
Senior
£500/day - £570/day
RECENTLY POSTED

AWS Data Engineer | 6m Contract | London, Hybrid - Outside IR35 Daily Rate: £570 per day (Outside) Team: Data Engineering - Application Development Overview: Opus have partnered with a London Financial Services company who're seeking a Senior AWS Data Engineer with a background in Application Development to support in architecting and delivering a new PostgreSQL‑driven data platform which will be used to support core functions across investment reporting, risk analysis, regulatory output, and performance measurement. This is a high‑impact greenfield build. You’ll take full ownership of the platform’s design and lead the transition away from Databricks and Excel-centric processes—shaping critical infrastructure that underpins the organisation’s investment operations. What You’ll Work On You’ll be responsible for designing and developing a scalable, secure PostgreSQL environment capable of supporting: Portfolio valuation and holdings data Performance and attribution reporting Risk and analytics outputs Regulatory and trustee disclosures Data governance and operational controls You’ll also oversee the migration of structured datasets from Databricks (Delta Lake/Spark) and replace manual Excel workflows with automated, well-governed pipelines to meet audit and regulatory standards. Key Responsibilities Build and maintain a secure PostgreSQL-based data platform Lead the shift away from Databricks and spreadsheet‑dependent reporting Create dimensional data models covering investments, pricing, performance and related domains Develop reliable ETL/ELT processes in Python Implement data quality, reconciliation and validation controls Optimise database performance for analytical and reporting workloads Ensure compliance with FCA and TPR regulatory guidelines Set up access controls, security standards and permissioning Establish monitoring, backup and disaster recovery solutions Collaborate closely with investment, risk and finance teams Essential Skills & Experience 5+ years’ experience in data engineering, application development or data platform roles Strong PostgreSQL knowledge, including indexing, optimisation and partitioning Background in financial or investment data environments Advanced SQL and Python skills Experience migrating data from platforms like Databricks Confident with dimensional modelling, star schemas, SCDs etc. Experience within regulated financial services Desirable Experience in pensions, asset management or institutional investing Understanding of performance measurement and attribution Exposure to Airflow or dbt Cloud platform familiarity (Azure or AWS) Knowledge of data governance best practice About You Highly detail‑driven with a strong approach to data quality Comfortable operating in tightly regulated sectors Able to explain technical concepts clearly to non‑technical audiences Practical, proactive and solution‑focused Why This Role? A rare opportunity to build core investment data infrastructure from the ground up High visibility and direct engagement with senior stakeholders across multiple business areas Stable organisation with long‑term goals and purpose Flexible hybrid arrangement requiring only occasional travel to the London office

2x Senior Data Engineer (Financial Services)
Hays Technology
London
Remote or hybrid
Senior
£700/day - £750/day
RECENTLY POSTED

Your new company Working for a globally renowned financial organisation Your new role We are hiring two Senior Data Engineers to support the ongoing development and modernisation of a large‑scale financial data platform. The environment blends long‑established enterprise systems and legacy components with modern cloud services hosted on AWS. The platform processes high‑volume structured datasets and powers a mix of internal business systems and customer‑facing financial products. A major part of the estate consists of large SQL Server environments; therefore, advanced SQL Server expertise is essential. You will take a leading role in modernising core components, improving platform performance and resilience, and building scalable backend and data services as the platform evolves. This role suits engineers who are confident working across legacy and modern stacks, and who bring strong experience in programming/ designing and delivering robust data services and APIs. What you'll need to succeed Expert‑level SQL Server development and optimisation experience. Experience working in environments with significant legacy components. Strong AWS knowledge (Lambda, Amazon S3, API Gateway; certifications beneficial). Experienced with programming languages such as Python or C#. Background in financial services or data‑heavy platforms with experience with legacy/ modern platforms. Solid mathematical or quantitative background would be beneficial for analytics‑focused work. What you'll get in return Flexible working options available. What you need to do now If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at (url removed)

Python Software Engineer Data ML
client server
London
Fully remote
Mid - Senior
£75,000
RECENTLY POSTED

Python Software Engineer / Developer (Data ML) Remote Uk to £75k

Are you a data savvy Python Software Engineer?

You could be progressing your career in as a hands-on Python Software Engineer role as part of a friendly and supportive international team at a growing and hugely successful European car insurance tech company as they expand their UK presence; their platform enables an insurance quote to be made to the consumer within 60 seconds, using just 4 clicks.

As a Python Software Engineer you will play a key role in building the foundational platforms that enable Machine Learning at scale across all countries where the company operates. You’ll design and develop reliable systems and shared capabilities that support the full ML lifecycle, from experimentation to production, taking a lead role in developing platform tools, shared services and infrastructure.

Collaborating closely with product managers and stakeholders, including data scientists and ML engineers, you’ll help to support the full ML lifecycle, from experimentation and training to deployment and monitoring, continuously learning and stay up to date with emerging technologies, tools and industry trends to ensure the platform remains robust and future-proof.

There’s a supportive, diverse environment where you’ll have your voice heard.

Location / WFH:

The company is a big advocate of flexible working and prides itself on DEI; you can work from home anywhere in the UK; you can also work at times that suit you.

About you:

You have strong Python development skills

You have a deep knowledge of software design principles and architecture

You have experience of working with Machine Learning models and workflows in production environments

You have a good knowledge of software development practices like TDD and BDD, ensuring code is marked by quality, readability and maintainability

You have a good working knowledge of CI/CD, IaC, containerisation technologies

You have experience of working with messaging / streaming platforms (e.g. Kafka, RabbitMQ) and designing relational databases (e.g., MySQL, PostgreSQL)

You’re proficient with cloud-based systems (preferably AWS)

You’re collaborative and pragmatic with great communication skills

What’s in it for you:

As aPython Software Engineer / Developer you will receive a competitive package:

Up to £75,000 salary

Flexible / remote working including flexible working hours

Ability to work 30 days from any EU country

Diverse, inclusive team environment with a range of support networks (e.g. LGBTIQA+, Women’s Networking group)

Apply now to find out more about this Python Software Engineer/ Developer (Data ML) opportunity.

TPBN1_UKTJ

C# Senior Software Developer
Adria Solutions
Manchester
In office
Senior
£75,000
RECENTLY POSTED
+11

C# Senior Software Developer My client is seeking a talented C# Senior Softwar Developer to join their Preston-based team. This role offers an exciting opportunity to lead projects, mentor junior developers, and work on high-impact, secure banking solutions. You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment.

This role is ideal for developers with strong technical expertise who are looking to grow into leadership or team management responsibilities.

Key Responsibilities Develop and maintain web portals using ASP.NET MVC / .NET Core

Design and integrate REST APIs with internal and third-party services

Implement secure authentication mechanisms (JWT, OAuth2, API Keys)

Connect applications to relational databases using Entity Framework Core (DbContext, LINQ, Migrations)

Debug and trace request flows from UI ? Controller ? API ? Database ? Response

Maintain and publish API documentation via Swagger / OpenAPI

Ensure API security, reliability, and performance (error handling, retry logic, logging, timeouts, CORS)

Collaborate with database, infrastructure, and QA teams for portal and API releases

Participate in code reviews, version control, and CI/CD deployment workflows

Required Technical Skills C# (strong proficiency)

ASP.NET MVC or .NET Core Web API

MVC concepts: Routing, Controllers, Filters, Middleware, Model Binding, Dependency Injection

Entity Framework Core (DbContext, DbSet, OnModelCreating, LINQ) and ADO.NET/Raw SQL experience

MS SQL Server or MySQL database experience

HTML5, CSS3, JavaScript

REST API expertise and integration (HttpClient, RestSharp, JSON serialization/deserialization, CORS, HTTPS, API security)

Git version control and CI/CD workflows (Azure DevOps, GitLab CI preferred)

Hosting experience with IIS or Kestrel

Docker basics (preferred but not mandatory)

Preferred/Bonus Skills Experience with fintech or payments API integration

Cloud services (Azure, AWS) hosting basics

Webhooks and event-based APIs

Structured logging tools (Splunk, ELK, App Insights)

Performance optimization and API rate-handling

Why Join My Client Be part of a pioneering fintech/secure banking technology company

Opportunity to mentor and lead junior developers

Work in a supportive, collaborative, and technically driven environment

Gain experience in high-security, mission-critical software projects

Interested? Please Click Apply Now!C# Senior Software Developer

TPBN1_UKTJ

Senior Ai Engineer
Chroma Recruitment Ltd
Chester
Hybrid
Senior
£60,000
RECENTLY POSTED

Senior AI Software Engineer Chester, Hybrid £60,000 plus excellent benefits

Hiring on behalf of a leading organisation in the financial services sector Chroma is supporting a growing technology focused organisation as they invest heavily in AI and data driven innovation. This Senior AI Software Engineer role is a key hire that will help shape their AI strategy, build impactful solutions, and support the development of junior engineers. If you enjoy solving complex technical problems, want to work on generative AI projects, and are excited by the chance to influence an organisations AI direction, this is a great opportunity. The Role

Youll work directly with senior leadership to design, develop, and deliver AI solutions across the business. This includes hands?on engineering, stakeholder engagement, and contributing to responsible AI practices. There is also a clear development pathway into a future Lead AI position. What Youll Be Doing Designing and delivering AI powered solutions, including generative AI models

Engineering and preparing data for AI model development

Integrating AI models into existing tech and cloud infrastructure

Ensuring compliance with data protection and sector regulations

Translating complex AI concepts into clear language for non?technical teams

Identifying innovation opportunities across the business

Mentoring junior engineers and supporting best practice

What Youll Need Essential Strong senior level software engineering experience

Hands?on experience building AI or ML solutions

Data engineering and feature engineering experience

Experience with cloud platforms such as AWS, Azure, or GCP

Ability to work autonomously and take ownership of solutions

Confident communicator and collaborator

Desirable Experience working in a regulated environment

Understanding of ethical AI, risk management, and responsible deployment

Leadership or mentoring experience

AI or ML related certifications

Whats on Offer £60,000 salary

25 days holiday plus bank holidays

Annual bonus scheme

Weekly personal training session

Private medical healthcare

Employee Assistance Programme

Life insurance

Enhanced maternity and paternity leave

Strong progression route into Lead AI Software Engineer

If youre looking for a genuinely exciting AI focused role within a mission driven organisation, wed love to hear from you.

TPBN1_UKTJ

Sysops Engineer
Yolk Recruitment
Bath
Hybrid
Mid - Senior
£40,000
RECENTLY POSTED

Bath (Hybrid)

40,000+ DOE

The Role
We’re working with a purpose-driven health tech company building software that genuinely improves patient outcomes. They’re looking for a SysOps Engineer to support and evolve their AWS-based infrastructure.

You’ll be joining a collaborative, agile team where engineers take real ownership. This isn’t a ticket-driven environment, you’ll be involved in shaping infrastructure, improving systems and working closely with developers and product teams.

What you’ll be doing

  • Supporting and improving AWS infrastructure across multiple environments
  • Maintaining high availability, security and performance
  • Working with Terraform and Ansible to manage infrastructure as code
  • Monitoring systems and responding to incidents
  • Collaborating with engineers across the business

Tech stack
AWS (EC2, VPC), Linux, Terraform, Ansible, Bash/Python, PHP/MySQL

What they’re looking for

  • 3-5 years in a DevOps / SysOps / Cloud role
  • Strong AWS experience
  • Infrastructure as Code (Terraform ideal)
  • Linux systems experience
  • Scripting (Bash or Python)

Why apply?

  • Tech-for-good environment
  • Strong team culture and collaboration
  • Learning and development budget
  • Private healthcare + enhanced benefits

Ready to Apply?

Contact Jack Winder to find out more.

Please apply with a CV and a cover letter outlining why you’re perfect for the role.
Know someone great for the job? We offer a referral scheme-just get in touch!

Note: We do our best to respond to every application, but due to volume, we can’t always guarantee it. If you haven’t heard back within 7 days, unfortunately, you haven’t been successful this time. Keep an eye on our site for new opportunities!

Quant Developer - OTC Pricing
James Joseph Associates
London
In office
Mid - Senior
£150,000 - £170,000
RECENTLY POSTED
+1

A high-growth institutional trading business in the digital assets market is expanding its London team and hiring a Quant Developer to join its OTC pricing function. This is a great opportunity to join a successful firm adding headcount as it continues to grow, and to work on highly visible quantitative systems that sit at the core of pricing, hedging and liquidity decisions. The role offers a rare blend of quantitative research partnership and hands-on production engineering, making it ideal for someone who enjoys solving real market problems in a fast-paced trading environment.

THE ROLE: Quant Developer OTC Pricing

This is a senior-level quant development role within the OTC pricing team, focused on turning quantitative ideas into robust, production-grade trading and pricing solutions. The successful candidate will work very closely with quantitative researchers, contributing not only to implementation but also to the design and refinement of pricing and liquidity models.

The role combines research-oriented modelling in Python with production engineering in Java. You will use Python to analyse data, test ideas and support model development, while using Java to build and enhance high-performance pricing infrastructure used in a live, global trading environment.

You will be involved in the development of pricing logic, flow analysis, spread optimisation and automated hedging tools. The role also includes working on distributed systems challenges in a 24/7 multi-region environment, where reliability, consistency and performance are critical. This is a high-impact position for someone who enjoys applying quantitative thinking to real trading and pricing problems at scale.

KEY RESPONSIBILITIES: Quant Developer OTC Pricing

  • Build and enhance quantitative pricing, hedging and optimisation models within a high-performance Java framework
  • Work alongside quantitative researchers to analyse large datasets and translate research into production-ready solutions
  • Use Python for model prototyping, data analysis, signal investigation and backtesting activity
  • Develop and improve pricing skew, spread and liquidity optimisation logic
  • Design and implement automated hedging strategies, taking into account execution risk, liquidity and market impact
  • Support pricing system deployment across distributed, multi-region architecture with a focus on uptime and consistency
  • Analyse client trading behaviour, including flow quality, decay and pricing performance, to support more effective pricing decisions
  • Contribute to the ongoing evolution of tools and systems used in a live institutional trading environment

REQUIRED - SKILLS/EXPERIENCE: Quant Developer OTC Pricing

  • Strong Java development experience, ideally 5+ years
  • Deep understanding of object-oriented design, concurrency, and high-performance distributed systems
  • Proficient in Python; Including use of libraries such as NumPy, SciPy and Pandas for quantitative analysis and prototyping
  • Proven experience applying numerical optimisation techniques and/or machine learning methods to pricing, trading or market-related problems
  • Prior experience in client pricing, electronic trading, or a closely related quantitative trading environment
  • Exposure to liquid markets such as FX, equities, ETFs or crypto
  • Strong academic background in a quantitative discipline such as Mathematics, Physics or Quantitative Finance
  • Ability to operate effectively in a role that bridges quantitative modelling and production engineering

DESIRABLE - SKILLS/EXPERIENCE: Quant Developer OTC Pricing

  • Familiarity with low-latency system optimisation, such as GC tuning or tools/frameworks used in high-performance messaging environments
  • Understanding of derivatives pricing and risk management, particularly across products such as futures, forwards, NDFs and CFDs
  • KDB+/Q
  • Exposure to AWS, Docker and Kubernetes
Transformation Leader
DCV Technologies
London
Hybrid
Senior - Leader
£700/day - £900/day
RECENTLY POSTED

Job Title: Head of Quality Engineering / QE Transformation Leader
Location: London or Norwich (Hybrid role)
Employment Type: Full Time

A global technology organisation is seeking a Quality Engineering Transformation Leader to drive enterprise-scale QE modernisation, automation strategy and testing transformation across a complex multi-platform environment.

This is a senior leadership role responsible for shaping the Quality Engineering strategy, test architecture, DevOps-aligned testing practices and automation frameworks across large delivery programmes. The successful candidate will work closely with CIO, CTO and senior engineering leadership, influencing the future of data-driven quality engineering and continuous testing.

Key Responsibilities

  • Lead enterprise QE transformation and modernisation initiatives.
  • Define and implement automation-first testing strategies including UI, API, mobile and performance testing.
  • Establish continuous testing aligned with DevOps and CI/CD pipelines.
  • Drive adoption of cloud testing, test data management and environment strategy.
  • Implement automation frameworks using Selenium, Playwright, Cypress or Appium.
  • Build and lead large distributed QE teams across multiple programmes.
  • Track quality metrics, productivity, automation ROI and defect trends.
  • Partner with senior stakeholders to embed engineering-led quality practices across the organisation.

Required Experience

  • Extensive experience leading Quality Engineering, Test Engineering or QE Transformation programmes.
  • Deep knowledge of automation frameworks (Selenium, Playwright, Cypress, Appium).
  • Experience with API testing (REST Assured, Karate, Postman).
  • Performance testing using JMeter or LoadRunner.
  • Strong understanding of DevOps, CI/CD pipelines and cloud platforms (AWS, Azure, GCP).
  • Experience building or leading large-scale QE teams and testing practices.

Desirable

  • Experience driving automation strategy and testing CoE transformation.
  • Exposure to AI or GenAI in testing and quality engineering.

This is a unique opportunity to lead enterprise-scale QE transformation and shape the future of modern quality engineering and test automation strategy

C# Senior Software Developer
Adria Solutions Ltd
Preston
In office
Senior
£50,000 - £75,000
RECENTLY POSTED
+11

My client is seeking a talented C# Senior Softwar Developer to join their Preston-based team. This role offers an exciting opportunity to lead projects, mentor junior developers, and work on high-impact, secure banking solutions. You will be a key contributor to web portal and API development, ensuring performance, security, and reliability in a dynamic environment.

This role is ideal for developers with strong technical expertise who are looking to grow into leadership or team management responsibilities.

Key Responsibilities

  • Develop and maintain web portals using ASP.NET MVC / .NET Core
  • Design and integrate REST APIs with internal and third-party services
  • Implement secure authentication mechanisms (JWT, OAuth2, API Keys)
  • Connect applications to relational databases using Entity Framework Core (DbContext, LINQ, Migrations)
  • Debug and trace request flows from UI Controller API Database Response
  • Maintain and publish API documentation via Swagger / OpenAPI
  • Ensure API security, reliability, and performance (error handling, retry logic, logging, timeouts, CORS)
  • Collaborate with database, infrastructure, and QA teams for portal and API releases
  • Participate in code reviews, version control, and CI/CD deployment workflows

Required Technical Skills

  • C# (strong proficiency)
  • ASP.NET MVC or .NET Core Web API
  • MVC concepts: Routing, Controllers, Filters, Middleware, Model Binding, Dependency Injection
  • Entity Framework Core (DbContext, DbSet, OnModelCreating, LINQ) and ADO.NET/Raw SQL experience
  • MS SQL Server or MySQL database experience
  • HTML5, CSS3, JavaScript
  • REST API expertise and integration (HttpClient, RestSharp, JSON serialization/deserialization, CORS, HTTPS, API security)
  • Git version control and CI/CD workflows (Azure DevOps, GitLab CI preferred)
  • Hosting experience with IIS or Kestrel
  • Docker basics (preferred but not mandatory)

Preferred/Bonus Skills

  • Experience with fintech or payments API integration
  • Cloud services (Azure, AWS) hosting basics
  • Webhooks and event-based APIs
  • Structured logging tools (Splunk, ELK, App Insights)
  • Performance optimization and API rate-handling

Why Join My Client

  • Be part of a pioneering fintech/secure banking technology company
  • Opportunity to mentor and lead junior developers
  • Work in a supportive, collaborative, and technically driven environment
  • Gain experience in high-security, mission-critical software projects

Interested? Please Click Apply Now! C# Senior Software Developer

Senior Site Reliability Engineer (SRE)
CBSbutler Holdings Limited trading as CBSbutler
London
Fully remote
Senior
Private salary
RECENTLY POSTED

Remote

12-month contract (high chance of extension)

Job Description
Join a global pioneer in the video game industry and own the reliability of high-traffic, revenue-critical platforms used by millions worldwide. As a Senior SRE, you’ll shape the architecture, improve platform-wide resiliency, and ensure services stay performant, scalable, and secure. This isn’t just about maintaining a single system, you’ll influence reliability across multiple services, driving improvements that touch the entire ecosystem.

Key Responsibilities

  • Lead incident response and troubleshooting for production systems, resolving high-severity issues and driving post-incident improvements.
  • Influence architecture to improve platform-wide reliability, resiliency, and operational efficiency, ensuring services remain available under heavy load.
  • Drive containerisation best practices and manage Kubernetes-based workloads at scale.
  • Build and maintain event-driven architectures that scale globally while ensuring fault-tolerance and high availability.
  • Automate infrastructure provisioning, deployment, and monitoring using Infrastructure as Code (Terraform, CloudFormation, Ansible, CDK).
  • Collaborate with engineering, product, and security teams to define SLOs, SLIs, and error budgets across services.
  • Provide mentorship, advocate SRE best practices, and ensure teams are empowered to deliver resilient, reliable systems.

Experience / Must-Have Skills

  • Extensive experience in AWS and AWS-managed services (EC2, Lambda, S3, VPC, CloudWatch, CloudTrail, IAM, EKS, Service Catalog, multi-account environments).
  • Strong Kubernetes / container orchestration experience, including EKS, OpenShift, Docker, and service mesh.
  • Deep understanding of networking fundamentals: DNS, VPCs, routing, load balancing, TCP/IP, firewall policies.
  • Proven track record in incident response and troubleshooting at scale.
  • Hands-on experience with infrastructure automation and CI/CD pipelines.
  • Experience designing event-driven architectures and resilient systems.
  • High level of autonomy, able to influence platform-wide decisions and architect for reliability across services.
  • Ability and desire to mentor junior staff
  • Bonus: experience in gaming, interactive entertainment, or other high-traffic, global-scale platforms.

If you are interested in this role, please feel free to submit your CV.

Security Architect
Opus Recruitment Solutions Ltd
London
Hybrid
Senior
£700/day - £800/day
RECENTLY POSTED

Security Architect (6 month Contract) - £700 to £800pd (Inside IR35) - London (Hybrid once per week)

I am currently looking for a Security Architect to provide senior technical leadership in the design and implementation of secure systems, ensuring security is Embedded into enterprise, cloud, and application architectures.

Key Skills needed

  • Significant experience designing secure enterprise or cloud architectures.
  • Strong knowledge of cloud security (eg, AWS, Azure, or GCP).
  • Experience with security architecture frameworks and threat modelling methodologies.
  • Understanding of identity and access management, network security, and data protection.
  • Ability to advise stakeholders and guide technical teams on security best practices.
  • Desirables - Certifications in: CISSP, SABSA, TOGAF, Cloud security (eg, AWS Security, Azure Security)

If interested and feel yourself well suited, please reply with your latest CV and I will be in touch to discuss in more detail.

Network Engineer
VIQU Ltd
Warwickshire
Hybrid
Mid - Senior
£50,000 - £57,000
RECENTLY POSTED

Warwickshire - Permanent - Hybrid

£50,000 - £57,000 + £2,800 market

VIQU has partnered with an esteemed organisation to recruit a Network Engineer to support and enhance critical enterprise network infrastructure. This Network Engineer role sits within a strategy and architecture-focused team, delivering the design, build and ongoing improvement of secure, resilient physical and virtual networks aligned to business and digital strategy.

Key Responsibilities:

  • Support, maintain and deliver enterprise network infrastructure across BAU and new design initiatives.
  • Act as the Network Engineer subject matter expert, independently delivering complex network configuration, security and infrastructure work.
  • Ensure all network solutions meet industry, legislative and compliance standards.
  • Translate business requirements into technical designs, options and impact analysis.
  • Drive continuous improvement, innovation and evaluation of emerging technologies.
  • Ensure alignment with digital strategy, identifying risks and mitigation strategies.
  • Own quality assurance and impact analysis for changes to existing network services.
  • Build and manage relationships with managed service providers, suppliers and partners.
  • Participate in an on-call rota and travel across Warwickshire as required.

Key Requirements:

  • Strong hands-on experience with Cisco, Avaya telephony, Azure, AWS, ZScaler, SolarWinds and Sentinel.
  • Solid knowledge of SD-WAN, VLANs, Azure vWAN and static/dynamic routing.
  • Experience in network monitoring, service management and supplier engagement.
  • Proven delivery of network infrastructure within large, complex organisations.
  • Experience producing technical design documentation and service artefacts.
  • Working knowledge of ITSM and ISO 20000 best practice.
  • Strong communication, problem-solving and stakeholder influencing skills.
  • Ability to operate at, or work towards, Level 2 of the Competency and Values Framework (CVF).

Apply today to speak with VIQU in confidence or contact Belle Hegarty at (see below) .
Know someone exceptional for this position? Refer them and receive up to £1,000 if successful (terms apply).

Network Engineer

Warwickshire - Permanent - Hybrid

£50,000 - £57,000 + £2,800 market supplement

Senior Full Stack Developer
StackStudio.digital
London
Hybrid
Senior
Private salary
RECENTLY POSTED
+1

Mode of working: London- 3 days onsite
Type of Employment:Permanent

Interview Format: 1. Live coding+ 2 interview rounds.

The Senior Full Stack Developer Role

As a Senior Full Stack Developer, you will design and deliver end-to-end application solutions using cloud platforms such as Azure, AWS or GCP, alongside modern technologies including NoSQL databases, Python, React, TypeScript and DevOps tooling. You will work on cutting-edge projects, develop scalable applications and collaborate with cross-functional teams to deliver high-quality solutions.

Senior Full Stack Developer Key Responsibilities:

  • Own the end-to-end architecture across front-end, back-end, APIs, data and system integrations.
  • Define reference architectures, technology standards and design principles for development teams.
  • Make strategic technical decisions balancing scalability, security, cost efficiency and delivery speed.
  • Design and develop accessible, secure and scalable front-end applications using React and TypeScript.
  • Establish standards for state management, authentication flows and UI/UX consistency.
  • Architect back-end services using Node.js or Python, including REST APIs and event-driven patterns.
  • Apply microservices principles, resiliency patterns and fault-tolerant design.
  • Model and manage relational and NoSQL databases such as MongoDB and Postgres, including caching and data access strategies.
  • Architect cloud-native solutions on AWS, Azure or GCP, incorporating CI/CD pipelines and Infrastructure as Code.
  • Build for high availability, disaster recovery, cost optimisation and embedded observability.
  • Apply secure coding practices and design robust authentication, authorisation and data-protection models.
  • Ensure compliance with enterprise security policies and regulatory standards.

Senior Full Stack Developer Essential skills / knowledge / experience:

  • Hands-on experience in software development and solution architecture.
  • Deep expertise in Azure, AWS or GCP cloud services.
  • Strong background in backend development (TypeScript, React, Node.js, Python), REST APIs and microservices.
  • Experience working with NoSQL databases such as MongoDB or Postgres.
  • Proficiency with CI/CD pipelines, Infrastructure as Code and DevOps practices.
  • Excellent communication and presentation skills, with the ability to articulate complex concepts clearly.
  • Familiarity with AI/ML integration and secure cloud architecture is an advantage.
Performance Test Engineer (Mid-Level)
scrumconnect ltd
London
Remote or hybrid
Mid
£40,000 - £50,000
RECENTLY POSTED

About Scrumconnect Consulting

Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, and more to deliver innovative digital services that matter.

Role Overview

Are you a Performance Tester who loves breaking things to make them better? We are looking for a Performance Test Engineer to join our team, focusing on load and performance testing for large-scale digital services.

This is a technical, delivery-focused role where you’ll work within structured environments to ensure that the services millions of UK citizens rely on are fast, resilient, and scalable. You will work under the guidance of a Lead Tester, giving you a fantastic platform to grow your technical expertise in a supportive, high-impact consultancy.

Key Responsibilities

  • Execute & Analyze: Run load, stress, and soak tests to identify where systems might struggle under pressure.
  • Scripting: Maintain and update performance test scripts using modern tooling.
  • Collaboration: Work with developers and architects to gather Non-Functional Requirements (NFRs) and validate capacity assumptions.
  • Environment Management: Execute tests within cloud-hosted (AWS) environments and help manage test data.
  • Defect Reporting: Raise clear, evidence-based performance defects and participate in triage sessions to help get them fixed.
  • Documentation: Contribute to test reports and keep execution runbooks up to date.

Essential Skills & Experience

  • Performance Testing Foundation: Proven experience in testing enterprise-level or distributed systems.
  • Tooling: Hands-on experience with at least one major tool: JMeter, Gatling, k6, or LoadRunner.
  • Technical Knowledge: A good understanding of APIs, HTTP protocols, and how databases/caching affect performance.
  • Data Analysis: Ability to analyze logs and monitoring data to spot bottlenecks.
  • Agile Mindset: Comfortable working in Agile or hybrid delivery models.

Scope & Accountability

  • You will be responsible for the day-to-day execution of performance tests.
  • You’ll own the accuracy of your test results and provide clear recommendations to the team.
  • You will report to a Lead Performance Tester who will support your professional development.

Our Commitment to Diversity & Inclusion

At Scrumconnect Consulting, we believe that diversity drives innovation. We are committed to creating an inclusive environment where everyone is respected, valued, and supported. We actively encourage applications from women, people with disabilities, individuals from underrepresented communities, and those seeking flexible working arrangements.

As a Disability Confident Level 1 employer, we provide reasonable adjustments throughout the recruitment process and employment to ensure equal opportunity for all.

Data Engineering Technical Lead
Robert Walters
Manchester
Hybrid
Senior
Private salary
RECENTLY POSTED

Data Engineering Technical Lead Location: Manchester
Role Type: Permanent
Work Setup: Hybrid - 3 days in office

Who We Are
Vanguard is one of the world’s leading investment firms, dedicated to helping clients achieve lasting financial success. Established in 1975, its unique ownership structure-where funds own the company and investors own the funds-ensures all efforts are focused on client outcomes. Known for integrity, innovation, and low-cost investing, fosters an inclusive and collaborative culture that empowers employees to make a meaningful impact globally.

What you’ll do:
Delivers advanced data solutions by processing, storing, and serving data efficiently. Ensures high-quality, secure, and scalable data pipelines. Performs deep analytical work on diverse data sources and mentors junior Data Engineers.

  • Design and develop ETL processes, database systems, and tools for Real Time and offline analytics.
  • Ensure data consistency and integrity; integrate large, complex datasets for business insights.
  • Converts business requirements into design and code, developing complex programs, queries, and reports while ensuring well-structured, documented, and maintainable solutions.
  • Collaborate with internal clients and technical teams to implement effective data solutions.
  • Lead solution development, providing technical guidance and explaining considerations to team and clients.
  • Assess data quality, test code, and provide technical consulting and data analysis guidance.
  • Mentor junior data engineers, enforce quality standards, and contribute expertise across teams.
  • Test and deploy new software, perform regression testing, and resolve vendor-related issues.
  • Apply experience in data analytics, programming, database administration, and data management.

What you bring:

  • Bachelor’s degree or equivalent experience
  • Strong senior data engineering background with deep understanding of medallion architecture.
  • Solid grasp of design principles (SOLID), design patterns, and OOP in Python as applied to data engineering.
  • Experienced in enforcing data engineering standards, clean code practices, code review approaches (Python + SQL)
  • Strong AWS experience: serverless services, cost optimization, infrastructure as code, and deployment fundamentals

What’s Next:

If you are ready to take the next step, apply now. Successful applicants will be contacted directly by a recruiter to discuss the role more.

We are committed to creating an inclusive recruitment experience. If you require support or adjustments to the recruitment process, our Adjustment Concierge Service is here to help. Please feel free to contact us at (see below) to discuss how we can support you.

This position is being recruited on behalf of our client through our Outsourcing service line. Resource Solutions Limited, trading as Robert Walters, acts as an employment business and agency, partnering with top organizations to help them find the best talent. We welcome applications from all candidates and are committed to providing equal opportunities.

Senior AWS Platform Architect
Randstad Technologies
London
Hybrid
Senior
£75,000 - £80,000
RECENTLY POSTED

Role: AWS Migration Architect (DC Exit)

Location: London (Hrbrid role)

Role Summary

Lead a high-profile Data Centre (DC) Exit and orchestrate large-scale AWS migrations. Working in partnership with AWS Professional Services, you will own the migration architecture, Landing Zone maturity, and enterprise-level governance.

Key Responsibilities

  • Migration Leadership: Own end-to-end migration waves using AWS MGN, Cloud Migration Factory (CMF), and DataSync.
  • Landing Zone Architecture: Enhance multi-account governance using Landing Zone Accelerator (LZA), SCPs, and guardrails.
  • Network Design: Develop scalable architectures incorporating Transit Gateway, hybrid connectivity, and segmentation.
  • Resilience & DR: Define and automate DR/BCP strategies using Zerto and AWS Backup within an FCA-regulated framework.
  • EUC Migration: Oversee the transition of RDS, AWS WorkSpaces, and EUC workloads.

Required Experience

  • Certification: AWS Certified Solutions Architect (Professional or Specialty) is mandatory.
  • Migration Track Record: Proven experience leading large-scale DC Exit programmes and server migrations.
  • Technical Depth: Deep expertise in LZA, AWS-native migration tools, and enterprise networking.
  • DR Expertise: Strong knowledge of disaster recovery patterns and Zerto orchestration.
  • Stakeholder Management: Experience collaborating with AWS ProServe and influencing senior leadership.

Randstad Technologies Ltd is a leading specialist recruitment business for the IT & Engineering industries. Please note that due to a high level of applications, we can only respond to applicants whose skills & qualifications are suitable for this position. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business.

Business-as-Usual (BAU) Engineer
Randstad Technologies
London
Hybrid
Junior - Mid
£60,000 - £70,000
RECENTLY POSTED
+3

BAU Engineer - AWS Operations & Automation

Location: London (preferred), Leeds, or Edinburgh
Work Model: Hybrid (40% office, increasing to 50% from September)
Salary: £50,000 - £75,000
Start: Immediate
On-call: Rotational support required

Security Requirement: Must hold or be eligible for SC Clearance (minimum 30 months UK residency).

Role Overview

We are seeking a BAU Engineer with strong AWS operations, Linux administration, and automation skills to support day-to-day cloud operations. The role focuses on maintaining reliable AWS services while driving AI-powered automation and operational improvements.

Key Responsibilities

BAU Operations

  • Manage daily AWS and Linux infrastructure operations.
  • Monitor systems, resolve incidents, and perform root cause analysis.
  • Support patching, upgrades, certificate renewals, and maintenance.
  • Follow ITIL processes (Incident, Change, Problem Management).
  • Maintain documentation, runbooks, and knowledge articles.

Automation & AI

  • Automate manual processes using Ansible, Scripting, and AWS services.
  • Implement AI-driven operational improvements (eg, incident diagnostics, alert intelligence).
  • Work with DevOps, SRE, Security, and Architecture teams to embed automation.
  • Promote an automation-first culture and measure operational improvements.

Monitoring & Security

  • Monitor systems using Datadog and AWS CloudWatch.
  • Manage SSL certificate life cycle.
  • Perform patch management (RedHat Satellite/Ansible).
  • Support security, vulnerability remediation, and compliance.

Required Skills

  • Experience in BAU/Cloud Operations/IT Operations roles.
  • Strong Linux (RHEL) administration.
  • Hands-on AWS experience:
    EC2, VPC, ELB, RDS, ECS, EFS, EMR, S3, IAM, Lambda, CloudTrail, Config, EBS.
  • Automation with Ansible, Bash, Python, or PowerShell.
  • Monitoring tools experience (Datadog preferred).
  • Good understanding of ITIL processes.
  • Strong communication and problem-solving skills.

AI/Automation Experience

Exposure to AI-driven IT operations such as:

  • AI-assisted incident analysis
  • Automated remediation workflows
  • Intelligent alerting systems
  • Chatbot-based operational support
  • AWS Bedrock or event-driven automation (Lambda)

Nice to Have

  • DevOps/SRE practices
  • Docker or container platforms
  • Infrastructure as Code (Terraform)
  • CI/CD tools (GitHub Actions, Jenkins)
  • Certifications: AWS, Terraform, RHCE

Randstad Technologies Ltd is a leading specialist recruitment business for the IT & Engineering industries. Please note that due to a high level of applications, we can only respond to applicants whose skills & qualifications are suitable for this position. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business.

Frequently asked questions
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