React Jobs in London

We’re looking for Software Engineers to join our College & Professional business unit where we build tools for professional sports teams, leagues, and federations around the world. Our goal is to give customers better information so they can make smarter decisions, faster.

You will focus on building integrations so we can better serve the needs of our customers at multiple levels, from high school to the pros and across a range of sports (e.g., soccer, American football, rugby, basketball). You’ll be the bridge that makes our platform work seamlessly with the tools teams already use.

As an Engineer, you’ll:

Develop and deliver. Your team has the autonomy to make a meaningful impact on customers, and deliver game changing features to push the boundaries of what they can achieve. By taking ownership of the whole user experience, your team will help support our coaches and athletes.
Test new ideas. At Hudl, we iterate rapidly, deploying changes to the product hundreds of times a day across our Engineering team. Outside of working on concrete features, you’ll have the opportunity to propose solutions to more ambiguous technical problems and provide guidance to less experienced engineers.
Work with a cross functional team. You’ll collaborate with Engineering, Quality Assurance, Product, Design and Scrum disciplines to deliver full stack web features.

For this role, we’re currently considering candidates who live within a commuting distance of our office in London. But with our flexible work policy, there aren’t any current requirements for the number of days you come to the office.

Must Haves

Exposure to mature, full stack web applications. You have several years’ commercial experience building across most or all levels of a web application, from the client side code, all the way down to the database.
Comfortable with uncertainty. You appreciate ambiguous work that has many possible implementation options because it gives you the chance to identify the best solution while balancing quality, consistency and value to customers.
Curious. You’ve picked up new technologies and domains on the job-working across myriad layers of the stack energizes you.
A strong communicator. You can easily and clearly express yourself. You’re able to convey technical concepts and trade offs to cross functional stakeholders.

Nice to Haves

Tech stack knowledge. Our core stack is C#, React, MongoDB and AWS, so experience with these is ideal, whilst software development skills in Java, Kotlin, CSS, HTML or UWP and exposure to frameworks like JSF, or Spring Boot is also a plus.
Automation testing. You have some experience and have worked with or built CI/CD pipelines.
Exposure to infrastructure tools. You’re comfortable with containerization, deployment and infrastructure as code technologies, like Docker, Kubernetes and Terraform.

Our Role

Champion work life harmony. We’ll give you the flexibility you need in your work life (e.g., flexible vacation time above any required statutory leave, company wide holidays and timeout (meeting free) days, remote work options and more) so you can enjoy your personal life too.
Guarantee autonomy. We have an open, honest culture and we trust our people from day one. Your team will support you, but you’ll own your work and have the agency to try new ideas.
Encourage career growth. We’re lifelong learners who encourage professional development. We’ll give you tons of resources and opportunities to keep growing.
Provide an environment to help you succeed. We’ve invested in our offices, designing incredible spaces with our employees in mind. But whether you’re at the office or working remotely, we’ll provide you the tech you need to do your best work.
Support your wellbeing. Depending on location, we offer medical and retirement benefits for employees-but no matter where you’re located, we have resources like our Employee Assistance Program and employee resource groups to support your mental health.

Inclusion at Hudl

Hudl is an equal opportunity employer. Through our actions, behaviors and attitude, we’ll create an environment where everyone, no matter their differences, feels like they belong.

Asset & Wealth Management - Software Engineer - Associate / Vice President - London

Your Impact

The Asset Management (AM) Trading Engineering team is responsible for building and supporting a central function of the Asset and Wealth Management Division (AWM) with one of the top Asset managers in the world with over a 2.9 trillion dollars under management. The business manages money for large institutional investors and runs several mutual funds, hedge funds and ETFs spanning a broad spectrum of sophisticated securities and geographies. AM has an extensive and growing global presence with key offices in New York, London, The Hague, Tokyo, Singapore and Bengaluru. The role offers a unique opportunity to work side by side with the Goldman Sachs Asset Management professionals and deliver the latest technology solutions in a fast paced finance environment.

As an engineer in the AM Trading Engineering team, you will be working directly with traders, portfolio managers and desk heads as well as middle and back office and core engineering teams to digitize and automate trading flows as part of the AM business growth strategy.

How you will fulfill your potential

Gain knowledge of the end to end life cycle for Trade Execution
Full stack development with React, Java, object caches, KAFKA, AWS, NoSql data sources and event driven processes
Participate in the design, development, testing, roll out and support of our systems
Work closely with business users and other developers globally
Work in a highly innovative technical team with plenty of opportunity to improve and grow your technical skills

Skills and experience we are looking for

Fluency in Java. Other OO languages are a plus
Test driven development e.g. Junit, Jbehave
Experience with microservice based architecture
Experience with MongoDB, Gemfire or NoSQL database is a plus
Financial knowledge, Trading systems and financial data flows is a plus
Electronic trading/ FIX is a plus

Goldman Sachs is an equal opportunity employer and does not discriminate on the basis of race, color, religion, sex, national origin, age, veterans status, disability, or any other characteristic protected by applicable law.

Lead Full Stack Developer

Location: Hybrid - from any of our UK offices

Term: Permanent Position

Annual salary: Competitive

Waracle is looking for a Lead Developer to join our world class digital technology consultancy. We are home to a diverse, smart, curious, and ambitious community of specialists in technology driven transformation.

We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business critical IT transformation projects, moving seamlessly from strategy, design, and delivery to operations.

This is a Hybrid role working from our Glasgow, Dundee or London office 2 days a week.

We are seeking a collaborative technical leader who values people as much as code. In this role, you will be a key driver of technical excellence, fostering a supportive and psychologically safe environment where your squad can thrive. You will balance hands on architectural guidance with the professional growth of your team, ensuring that our digital solutions are robust, scalable, and perfectly aligned with our clients’ business goals.

Key aspects of the role include:

Technical Architecture: Defining squad level technical architecture and selecting the most effective frameworks for project success.

Delivery Leadership: Taking accountability for technical delivery outcomes and managing technical risk across the project lifecycle.

Stakeholder Partnership: Facilitating workshops to understand requirements and translating business objectives into clear technical tasks.

Team Empowerment: Ensuring a collaborative, safe environment for specialists to succeed and leading a squad with a focus on quality.

Community Contribution: Defining coding standards and shared practices while shaping strategies for new technical offerings.

What you’ll bring

Versatile Technical Leadership: A proven track record of guiding teams across diverse technology stacks, with the ability to choose the most effective tool for each unique challenge.
Fullstack Proficiency: A balanced, extensive background in both Frontend (React, Vue, or Next.js) and Backend (.NET/C# or Node.js) systems.
Architectural Expertise: Demonstrated experience in defining technical architecture and managing the technical debt roadmap.
Strategic Communication: A proven ability to manage stakeholders and translate complex business goals into actionable engineering tasks.
Dedicated Mentorship: A strong commitment to mentoring, developing engineering talent, and instilling defensive coding principles across the team.

Recruitment process

The process begins with an initial call with your dedicated Talent Acquisition Partner to discuss Waracle, your aspirations, salary, and benefits.

You will then be invited to a two stage interview process to find out more about the role and showcase your skills and experience.

Your Talent Acquisition Partner will guide you through the whole process to your first day with us.

We believe in supporting our team, inside and outside of work. Here’s a glimpse of what you can expect:

Our values

To make the world a better place through impactful software.

Frequently asked questions

Here are some of the things that people tend to ask about working at Waracle.

We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, gender, disability, religion/belief, sexual orientation or age.

We are not accepting applications from recruitment agencies.

Android Engineer Engineering London Head Office

Vita Mojo International LTD

Location: Central London (2/3 days onsite)

Job Type: Fulltime

Why join us?

If you love food and technology as much as we do, you’ll love life at Vita Mojo. We’re on a mission to revolutionise the hospitality experience for operators and their customers. Through our smart digital products, we’re powering the digital transformation of your favourite pubs, bars and restaurants. And we want a world where everyone gets the meal they’re hoping for. Each and every time.

Our Vita Mojo DNA

We’re proud to have built an award-winning digital platform. Vita Mojo is a positive, energetic and forward-thinking place to work, and when you become a Moji, you’ll be joining a supportive team who’ve always got your back. Our passion for technology and food is matched only by our support for our people.

About the role

Your mission as a Vita Mojo Embedded Engineer is to own and evolve the native “shell” that powers our restaurant ecosystem (POS, Kiosk, KMS). While our core applications are built using React Native Web, they operate within a complex hardware environment; including thermal printers, EMV payment terminals, and barcode scanners.

You’ll lead the transformation of our existing WebView wrapper into a high-performance, multi-threaded native bridge architecture, ensuring hardware operations run seamlessly in the background without ever compromising the user experience.

The day-to-day

Working in a startup means that things often change and we adapt to the growing and changing needs of the business. We expect the below to be the bulk of the role, but this may change over time depending on your own development needs, aspirations and the makeup of the team.

Architect the Native Bridge: Design and maintain a robust JavascriptInterface (Bridge) between the React Native Web app and the Android native layer.
Peripheral SDK Integration: Lead the implementation of 3rd party SDKs for hardware (Zebra, Epson, Star Micronics, Adyen, Stripe/BBPOS).
Concurrency Management: Implement advanced multi-threading (Kotlin Coroutines or Java ExecutorService) to ensure hardware “blocking” calls (like printing or card reading) occur on background threads, keeping the UI at a fluid 60fps.
System Hardening (Kiosk Mode): Develop and manage “Lock Task Mode” and Device Policy Controller (DPC) features for our Kiosk and POS hardware to prevent OS-level tampering.
IoT & Network Optimisation: Manage local network discovery (mDNS/NSD) for finding kitchen printers and optimise cellular (LTE/5G) stability for mobile POS units.
Hardware Health Monitoring: Build a background telemetry system to report hardware status (e.g., “Printer Out of Paper”, “Terminal Disconnected”) to our cloud dashboard.

About you

Experience: 5+ years in Android Development (Java/Kotlin).
Meaningful iOS/Swift experience - can context-switch to our iOS counterpart.
WebView Expert: Deep understanding of WebView internals, including asset caching, custom WebViewClient implementations, and secure JS Native communication.
Hardware Specialist: Proven track record of working with Serial (USB/RS232), Bluetooth (BLE), and IP-based peripherals.
Protocol Proficiency: Experience with ESC/POS (thermal printing) and JSON-RPC or MQTT for device messaging.
Architectural Knowledge: Strong grasp of the Android IOS Lifecycle to ensure background hardware tasks aren’t killed by the OS.
Payment terminal integration experience (any major provider).
Debugging mindset - a lot of this role is figuring out why something broke on a specific device at a specific store.

Preferred Qualifications

Experience in the FinTech/POS industry.
Thermal receipt printers (ESC/POS), kiosk hardware (ELO), device fleet management / MDM, embedded systems background.
Knowledge of React Native Web to better collaborate with the frontend team.

Our Benefits and Ways of Working

We’re proud of the open, inclusive, and supportive culture we’ve built, and continue to build Vita Mojo. We operate a hybrid working model with two in-office collaboration days each week. Outside of those, we trust our team to manage their working day in a way that suits them, while being mindful of team needs, collaboration, and business priorities. This means you can flex your time when needed, whether for personal appointments, family responsibilities, or deep-focus work as long as you’re communicating openly and delivering on your goals.

Private Healthcare All team members have access to private medical insurance through Vitality Health, offering fast access to high-quality healthcare, wellbeing resources, and the Vitality Programme.

Life Assurance We provide Group Life Assurance through Legal & General, offering financial protection and wellbeing support to your loved ones in the event of your passing.

Income Protection Income Protection is offered via Canada Life to support you financially if you’re unable to work due to long-term illness or injury, with additional support to help you return to work when ready.

Learning & Development We believe that when you grow, we all grow. We’re proud to support professional development that helps you build transferable skills, whether that’s in your current role or to set you up for future success within the company. We’re also happy to support learning that’s not strictly role-specific, as long as it’s professionally enhancing and contributes to your broader growth at Vita Mojo.

Holiday Allowance Team members receive 25 days of annual leave plus public holidays. This increases with each full year of service, up to 28 days.

Carer’s Leave We offer one week (five days) of paid leave annually to support team members caring for a loved one.

Parental Leave Our enhanced parental leave policy supports all new parents after three months of employment. Primary caregivers receive 16 weeks of full pay, followed by 50% pay for an additional 16 weeks. Secondary caregivers receive four weeks of full pay, plus an additional two weeks after three years of service.

Health Leave We offer 12 days of fully paid sick leave annually to support your health and recovery.

Birthday Leave Take the day off to celebrate your birthday-it’s on us.

Social Events We host regular team socials, from monthly in-office drinks to quarterly offsites, celebrating milestones and enjoying time together as a team.

Dog-Friendly Office We welcome well-behaved dogs in our offices.

Senior Website Developer

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It’s never been a more exciting time to join Vistra.

At Vistra our purpose is progress. We believe that our clients have the power to change the world and to do great things for global progress, and we exist to remove the friction that comes from the complexity of global business - to help our clients achieve progress without friction.

But progress only happens when people come together and take action. And we’re absolutely committed to building a culture where our people can do just that.

We have an exciting opportunity for you to join our team as Senior Website Developer for a 6 month fixed term contract. Reporting to the SVP Demand Generation this full-time position can be based in Vistra London or Vistra Dubai allowing you to make a significant impact to our business and its’ growth.

Purpose of Role

We’re looking for a Senior Web Developer/Engineer to own and lead the rebuild and ongoing evolution of our global B2B website. This is a high-impact role at the intersection of engineering, growth, and digital experience.

You’ll be responsible for building a scalable, high-performing website using Next.js and Sanity CMS, while driving improvements in performance, SEO, and conversion. Working closely with marketing, design, and external partners, you’ll ensure the website operates as a core growth engine for the business.

Sanity CMS Experience is a Essential

Please provide a demonstrable portfolio of work (e.g., GitHub repositories, case studies, or examples of Sanity powered projects) showcasing practical experience with content models, schemas, or integrations.

Key Responsibilities

Build and maintain the website using Next.js and Sanity CMS, focusing on scalability and performance
Develop reusable, modular components that enable non-technical teams to create pages efficiently
Design and manage content models, schemas, and structured content systems within Sanity
Translate design assets into high-quality, production-ready frontend components
Drive technical SEO best practices including metadata, structured data, and Core Web Vitals optimization
Manage and optimize Cloudflare (caching, redirects, SSL, performance)
Build and maintain integrations with marketing and business platforms
Support deployment workflows and infrastructure (AWS, Vercel, or similar platforms)
Ensure consistency, scalability, and maintainability across the codebase and CMS
Utilise hands on experience with Sanity CMS

Attributes / Technical Skills

CMS Expertise: SanityCMS (content modeling, schemas, workflows, previews, tagging, content updates)
SEO & Performance: Technical SEO, Core Web Vitals, structured data, metadata, URL structure, page speed optimization
CDN / Cloud: Cloudflare management (caching, redirects, SSL, WAF, performance optimization)
Cloud / Deployment: AWS or similar cloud platforms, Vercel or equivalent hosting
Integrations: Platform and system integrations, syncing content across tools
Version Control: Git-based workflows and collaborative development practices
Other: Accessibility, responsive design, component-based architecture, code quality best practices
Proven track record delivering full website rebuilds using modern frameworks (Next.js / React).
Hands on experience working with headless CMSs, including content modeling, tagging, previews, and ongoing content management.
Experience implementing technical SEO strategies and optimizing site performance.
Managing CDN platforms (Cloudflare or similar) for caching, redirects, SSL, and performance optimizations.
Familiarity with cloud infrastructure and deployment, preferably AWS or similar platforms.
Experience integrating websites with third-party systems and marketing platforms, ensuring data consistency across tools.
Collaborating with cross-functional teams: designers, marketers, and external agency partners.
Experience supporting B2B brand websites, particularly content-heavy or lead-generation focused sites.

Infrastructure Engineer

About the role

We’re looking for an experienced DevOps Engineer to join our Cloud Infra team at Synthesia. Cloud Infra is a group that enables our Product engineers to build, and deploy Synthesia state of the art technologies.

You can expect to work across cloud infrastructure, CI/CD pipelines, observability, and tooling, with autonomy to identify and fix bottlenecks in a fast moving AI company.

This is a hands on senior IC role (roughly level 5 scope). You’ll be joining a growing team that’s shifting from enablement to direct execution, and you’ll help shape how we scale our infrastructure over the next year.

What you’ll do

Maintain and scale Kubernetes (EKS) clusters - managing workloads, deployments, and monitoring at production scale.
Manage and evolve our AWS (and some GCP) cloud environments, balancing reliability, cost, and velocity.
Own and improve our CI/CD systems (GitHub Actions on our self hosted AWS runners).
Define and implement Infrastructure as Code using Terraform and Terragrunt.
Strengthen observability via Datadog and enable teams to understand their systems in production.
Collaborate with Product Engineers to deploy and monitor production services.
Drive FinOps practices: vendor management, cost allocation, and financial feedback loops.
Contribute to internal tooling, automation, and reporting platforms that improve developer experience.

You’ll thrive in this role if you have:

Deep hands on DevOps / SRE / Platform experience in a SaaS or high traffic product environment.
Strong Kubernetes experience - spinning up and managing clusters, not just consuming them.
Proven AWS and/or GCP expertise.
Proficiency with Terraform / Terragrunt, Linux, and Python scripting.
Strong understanding of CI/CD design patterns.
Experience with Datadog or similar observability tooling.
Comfortable operating autonomously in ambiguous environments.
A pragmatic mindset - focusing on scalable, maintainable solutions over theoretical perfection.
A bias toward execution and written communication, especially in remote contexts.

Bonus points

Familiarity with Temporal.io, or workflow orchestration frameworks.
Light frontend or tooling development experience (React, Node.js).
Previous work supporting AI research or data intensive environments.

Other important info

This is a remote role from an EU country, UK or Switzerland or hybrid from one of our London, Munich, Copenhagen, or Zurich hubs.
This is full time employment only - no contractors possible - usually through OysterHR or a local entity.
We only sponsor visas if you are in the UK or some EU countries already.

Software Developer - Finance Technology

Rex Technologies GmbH

About Marex

Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across four core services: clearing, agency and execution, market making, and hedging and investment solutions. It has a leading franchise in many major metals, energy and agricultural products, with access to 60 exchanges. The group provides access to the world’s major commodity markets, covering a broad range of clients that include some of the largest commodity producers, consumers and traders, banks, hedge funds and asset managers. With more than 40 offices worldwide, the group has over 2,300 employees across Europe, Asia and the Americas.

Role Summary

As a Senior Developer specialising in C# .NET, you will be a pivotal member of our Software Development team, driving an AI first approach to the creation and enhancement of secure, responsive web based finance platforms. These platforms will modernise and extend core PeopleSoft finance capabilities, delivering improved usability, performance, and scalability through contemporary web technologies.

You will leverage modern AI assisted development tools and practices to accelerate delivery, improve code quality, and enhance developer productivity, while ensuring solutions meet the high standards of control, auditability, and reliability required within financial systems, including compliance with SOX (Sarbanes Oxley) requirements.

Your expertise in C# .NET, combined with your ability to apply AI driven techniques across the software development lifecycle, will be instrumental in delivering robust, scalable, and well governed applications. You will maintain a strong emphasis on testing, traceability, and deterministic system behaviour, ensuring that AI adoption enhances-rather than compromises-system integrity, auditability, and regulatory compliance.

In this role, you will apply your architectural experience to help mature our existing software estate, introducing intelligent automation where appropriate and transforming legacy PeopleSoft based functionality into cloud native, web first solutions. You will work closely with the platform engineering team to ensure seamless integration and deployment, while embedding AI enabled tooling and practices in a controlled, transparent, and compliant manner across the development lifecycle.

Responsibilities

Design, develop, and test components of modern, secure web based finance applications, applying AI assisted development practices to improve quality and delivery speed
Contribute to the overall architecture and design of technology solutions, incorporating AI enabled tooling and automation while ensuring control, transparency, and auditability
Develop solutions to a high standard that are maintainable, testable, and aligned to acceptance criteria, with a strong emphasis on traceability and deterministic behaviour in regulated environments
Adhere to development best practices and processes, including those required for SOX compliance (e.g. change control, segregation of duties, and auditability)
Leverage AI tools responsibly across the software development lifecycle (e.g. code generation, testing, documentation), ensuring outputs are reviewed, validated, and compliant with engineering standards
Communicate effectively with team members, contribute ideas, and stay current with emerging technologies, particularly in AI and modern engineering practices
Liaise with business users to gather and refine application requirements, particularly in the context of modernising legacy finance platforms (e.g. PeopleSoft)
Ensure delivered systems are production ready, secure, and well documented, supporting operational handover and ongoing audit requirements
Follow coding standards and defined development processes, ensuring consistency, quality, and compliance across all deliverables
Resolve third line support issues in a professional and timely manner, applying a structured and analytical approach to problem solving

Skills and Experience

Essential:

Experience in C# .NET, React, JavaScript, TypeScript
Experience leveraging AI assisted development tools (e.g. code generation, automated testing, developer productivity tooling) to improve delivery speed and quality
Strong understanding of applying AI responsibly within the software development lifecycle, ensuring traceability, auditability, and control
Experience of NoSQL or RDMS databases
Infrastructure as Code, Terraform or equivalent
Modern CI/CD and DevOps practices
Cloud technology, ideally AWS (Amazon Web Services)
Knowledge of BDD/TDD
Agile and scrum development methodologies
Methodical approach to software architecture and design and experience employing the right design choices for a given project
Understanding of controls required in regulated environments, including SOX (Sarbanes Oxley), with a focus on auditability, segregation of duties, and change control
Excellent verbal and written communication skills

Desirable:

A collaborative team player, approachable, self efficient, and able to foster a positive engineering culture, including adoption of AI first practices
Demonstrates curiosity, particularly in emerging technologies, AI capabilities, and continuous improvement of development practices
Resilient in a challenging, fast paced, and regulated environment
Excels at building relationships, networking, and influencing others across both technical and business teams
Strategic collaborator with insight and agility, able to anticipate future challenges, including those related to scale, regulation, and technology evolution, ensuring operational effectiveness

Competencies

Dynamic work ethic: ability to adapt to changing electronic trading environment and proactively learn new technologies
Proactive and willingness to pick up issues
Calm demeanour
Excellent verbal and written communication skills
A collaborative team player, approachable, self efficient and influences a positive work environment
Demonstrates curiosity
Resilient in a challenging, fast paced environment
Excels at building relationships, networking and influencing others
Strategic collaborator with insight and agility, able to anticipate future challenges, ensuring operational effectiveness

Legal and Equal Opportunity Statement

Marex is fully committed to the elimination of unlawful or unfair discrimination and values the differences that a diverse workforce brings to the company.

Vice President of Community & Developer Relations

For more information, please read our There are NO limits to your career: come shape the future and be part of a truly unique global culture at OutSystems! # Vice President of Community & Developer Relations Locations US - Remote or UK Time Type Full time There are NO limits to your career: come shape the future and be part of a truly unique global culture at OutSystems! The Role As Vice President of Community & Developer Relations, you will own the global strategy, execution, and evolution of OutSystems' developer ecosystem. This role sits at the intersection of product, engineering, marketing, customer success, partners, and the broader developer community, with accountability for growing, engaging, and enabling a large-scale, enterprise-focused developer audience worldwide. You will lead a global Developer Relations and Community organization responsible for developer experience, community growth, education and enablement, advocacy, content, events, programs, and feedback loops that influence product direction and go-to-market success. Your mission is to ensure developers succeed with OutSystems at every stage of their journey, from first touch to enterprise-scale production and expansion. Job Responsibilities and Expectations Strategy and Leadership • Define and execute the global Developer Relations and Community strategy aligned with OutSystems' business objectives, product roadmap, and go-to-market motions. • Lead, scale, and mentor a high-performing, globally distributed DevRel and Community organization. • Act as the executive voice of the developer community • Establish clear success metrics for developer engagement, activation, retention, and advocacy. Community and Ecosystem Growth • Own the growth, health, and engagement of the global OutSystems developer community. • Scale community programs for different developer personas and maturity stages. • Build partnerships with external entities (system integrations, universities, partners, etc.) who can help grow or improve the OutSystems developer community. • Foster advocacy, recognition, and belonging within the community. Developer Experience and Enablement • Drive an exceptional end-to-end developer experience across onboarding, learning, documentation, and tooling. • Oversee education, certification, and enablement programs. • Collaborate with Product and Engineering to influence platform direction. • Champion best practices for enterprise-grade development and AI-powered applications. Advocacy, Content, and Events • Lead global developer-facing content and thought leadership. • Own developer events, including flagship conferences, hackathons, and workshops. • Scale developer advocacy and ambassador programs. • Represent OutSystems externally at industry events. Cross-Functional Influence • Partner with Marketing, Sales, Customer Success, and Product leadership. • Align DevRel initiatives with customer acquisition and expansion motions. • Shape long-term ecosystem and community investments. • Support and champion social impact initiatives internally and within the community Compensation Competitive executive compensation package including base salary, bonus, and equity. Qualifications and Required Skills • 10+ years in Developer Relations, Community, or related roles. • Proven track record scaling global developer communities. • Strong understanding of enterprise software platforms and development practices. • Experience influencing product direction. • Experience leading global teams. Nice to Have • Software development or architecture background. • Enterprise customer experience. • Community platform and analytics experience. • Public speaking and thought leadership presence. More about OutSystemsOutSystems is a leading AI Development Platform built for the enterprise. Global organizations trust OutSystems to rapidly build mission-critical apps and agents, modernize legacy processes with agentic systems, and govern their entire AI portfolio across complex regulatory environments, all on one unified platform.As the future becomes agentic, our customers need us now more than ever. While AI has opened the door to extraordinary possibilities, most large organizations find themselves stuck on one side of the "enterprise gap" because AI by itself doesn't solve their complex use cases and business challenges. OutSystems bridges the "enterprise gap" by combining the speed of generative AI with a deterministic, enterprise-grade framework. We provide the tools for teams of any size to deliver high-quality, reliable AI solutions that drive real business impact.We are looking for passionate, talented, and motivated people to join us as we empower organizations to build, deploy, and scale the next generation of enterprise software. While we are leading the charge into the agentic era, our mission is broader: we are the platform enterprise leaders trust to evolve their entire business, accelerating innovation through secure, governed human-AI collaboration.OutSystems is a global company, with more than 900k developer community members, 1,700 employees, more than 600 partners, and thousands of active customers in over 75 countries and across 21 industries. Founded in 2001, OutSystems now has offices in the United States, United Kingdom, the Netherlands, Portugal, Germany, the UAE, Japan, Hong Kong, Malaysia, Australia, India, and Singapore, and includes a thriving, worldwide community of remote employees.Our customers are some of the world's most recognizable brands across diverse industries- such as Toyota, Heineken, Bosch, KeyBank, and UCLA-who trust OutSystems to deliver ROI and transformational impact.Consistently recognized as a leader by top analyst firms Gartner, IDC and Forrester, OutSystems continues to shape the future of enterprise software development in the agentic era. We are proud to be named a leader in more than 100 categories on G2, including in Customer Satisfaction in Enterprise Low Code Development, and most recently as a leader in AI Agent Building in the G2 Spring 2026 Reports. Working at OutSystemsOur culture is built on our core values of Trust, Customer Success, Innovation, and Alignment. We operate as one global OutSystems team, taking ownership to pursue our vision of being the AI platform enterprise leaders trust to build, secure, and evolve their most critical applications and systems. A company at the vanguard of the agentic revolution, where we don't just react to AI innovation-we architect it. Joining OutSystems means stepping onto a high-growth rocket ship that combines the fearless agility of a startup with the sophisticated, global foundation of an enterprise powerhouse. Real growth opportunities. We don't just talk about development; we invest in it through structured programs designed to scale your expertise. Whether you are aiming for vertical progression, exploring lateral moves into new domains, or mastering specialized AI skills through our Professional Development Fund and Internal Mobility Program, we provide the resources to get you there. A global collective of world-class talent, where you'll collaborate with enterprise software legends and sought-after thought leaders. At OutSystems, our industry experts aren't just visionaries-they are accessible, approachable mentors who are deeply invested in your growth as we architect the agentic future together.OutSystems nurtures an inclusive culture where talented individuals from all backgrounds are empowered to learn, experiment and make an impact We believe that driving our next phase of growth requires the radical creativity that only comes from

Senior Fullstack Engineer - Admin/AI

Senior Fullstack Engineer (Admin & AI Enablement)

Team: Admin & AI Enablement

Location: Remote / London / Hybrid (TBD)

This role will be a key part of building Midnite’s new internal back office platform and shaping how internal tools evolve across the business. You’ll work across the stack to deliver high-quality admin experiences used by teams every day, while also contributing to practical AI enabled improvements in both internal tooling and engineering workflows. This is a senior individual contributor role with meaningful ownership, particularly across the frontend experience, working closely with Product, Design, and engineering teammates to build scalable systems from the ground up.

Job Responsibilities

Build full stack features for Midnite’s internal back office platform.
Own features end to end across backend APIs and internal UIs.
Write production code across Python backend and modern front end technologies, primarily Vue + Tailwind.
Work closely with Product and Design to implement high quality internal experiences.
Design and build APIs as part of full stack feature delivery.
Contribute to practical AI enabled features and internal tooling improvements.
Explore ways AI and automation can improve engineering workflows and team efficiency.
Participate in code reviews and maintain a high quality bar across the codebase.
Mentor junior engineers and contribute to raising the technical standard of the team.

Required Qualifications

Brings 5+ years of engineering experience across front end and back end.
Has strong front end capability in a modern JavaScript framework such as Vue, React, or Angular.
Has back end development experience in Python or a similar language.
Can build end to end features across UI, API, and database layers.
Has worked closely with Product to build good product experiences.
Brings strong ownership and can operate effectively in a fast moving, ambiguous environment.
Has an interest in AI tooling, automation, and practical experimentation.
Communicates clearly and works well with Product, Design, and engineering teammates.

Benefits

Private health insurance with zero excess, including optical cover and optional dental.
Income protection to protect your earnings and give you peace of mind.
Tenure holiday policy. After three years you receive an extra two days leave, increasing to 30 days annually after five years.
Flexible working and a fully supported home office setup so you can do your best work from home.
Nursery salary sacrifice scheme helping parents save thousands each year on nursery fees.
Salary sacrifice schemes for tech and holidays so you can spread the cost of the things you want.
Retail discounts and subscription perks across a wide range of brands.
Quarterly team socials to connect, celebrate and have fun together.

At Midnite, we’re committed to creating equal opportunities for everyone. We actively strive to build balanced teams that reflect the diversity of our communities, including ethnic minorities, people with disabilities, the LGBTQIA+ community, and all genders.

We aim to provide an inclusive and supportive interview experience for all candidates. If you require any reasonable adjustments, please let us know in advance so we can ensure you feel comfortable and set up for success.

Associate, Technical Product Manager

About this role

Aladdin Portfolio Management Product - Technical Product Manager

BlackRock is the world’s leading asset management firm and Aladdin is the central nervous system for investment professionals to see their whole portfolio, understand risk exposure, and act with precision. It is a $1 BN+ technology business that has significant growth aspirations over the next five years. Being a part of BlackRock means being a part of a community of smart, results oriented people who are pursuing some of the world’s most sophisticated financial challenges. And our founder led culture has maintained its results oriented feel - we work hard, we work as a team, and we work with purpose. Being a member of Aladdin Product means working with the best in the industry to build innovative products that shape financial markets.

Sitting at the intersection of business, design, and technology, the Aladdin Product Management team works closely with developers, designers, researchers, data scientists, and other stakeholders to innovate, conceptualize, design, and pilot new capabilities across the investment lifecycle. As a Technical Product Manager, you will help define product vision and lead day to day execution of the roadmap, with a strong focus on user experience, platform APIs, and AI enabled capabilities. There are many strategic areas that need exploration, evaluation, and prioritization, while in parallel ensuring that the tactical needs for continuing to deliver high quality products are met.

You are:

Passionate about building technical, user centered solutions in close partnership with engineering and UX/UI teams
A self starter who enjoys solving complex problems that deepen understanding of end users and their workflows
Comfortable translating user needs into scalable APIs, data models, and platform capabilities
AI curious and AI practical: you actively use AI tools to accelerate discovery, writing, analysis, and experimentation, and can distinguish durable product value from one off demos
Curious to learn new skills and willing to embrace work outside of your comfort zone
Comfortable challenging the status quo and using your entrepreneurial spirit to create new solutions
A team player energized by working in a fast paced, highly collaborative environment

We are:

Passionate about building innovative, intuitive products that meet the needs of our clients
Building AI enabled capabilities responsibly, with a strong focus on trust, governance, and measurable outcomes
Comfortable challenging the status quo and continuously improving how we deliver value
Curious about financial markets, design systems, and the evolving technology ecosystem
Results oriented and metrics driven
Committed to fostering a purpose driven culture and working horizontally to break down silos

Skills / Qualifications:

2+ years of experience in product management, business analysis, or client facing roles involving the delivery of technology products in B2B or B2C environments
Working knowledge of modern front end frameworks (JavaScript, Angular, React) to collaborate effectively with engineering teams
Demonstrated experience partnering with UX/UI designers on interaction design, workflow optimization, and usability testing
Comfort working with APIs and data in product contexts, including reading API specifications, understanding request/response patterns, authentication, rate limits, and failure modes
Ability to reason about system integrations, data models (structured and unstructured), and their impact on user experience
Hands on comfort using AI tools in daily product work (e.g., research, synthesis, drafting requirements, competitive analysis), with appropriate judgment and confidentiality
Familiarity with AI product patterns and risks, including model limitations, evaluation approaches, and human in the loop design
Strong analytical and problem solving skills with a bias for action
Excellent written and verbal communication skills, with the ability to explain complex technical concepts clearly
Ability to make data driven decisions and deliver results quickly
BA/BS degree in Computer Science, Engineering, Economics, Finance, or equivalent practical experience

Primary Responsibilities:

Partner with teams across Aladdin and interact with senior stakeholders to drive strategic product decisions that accelerate the platform’s evolution
Define and document detailed product requirements, including UX flows, API contracts, and data interfaces
Collaborate closely with design to ensure products are intuitive, consistent, and aligned with Aladdin design standards
Identify opportunities where AI can improve user workflows (e.g., insight generation, explanation, automation, natural language interaction), and ensure thoughtful, transparent application
Attend and help manage agile development rituals such as stand ups, planning, demos, and retrospectives
Develop, prioritize, and maintain product roadmaps; provide regular updates on progress and deliverables
Maintain and manage product backlogs and tooling (e.g., Aha!) across the program
Keep abreast of the competitive landscape, emerging technologies, and opportunities for partnership
Become a subject matter expert and provide technical and product expertise to internal stakeholders, sales teams, and clients

Our benefits

To help you stay energized, engaged and inspired, we offer a wide range of employee benefits including: retirement investment and tools designed to help you in building a sound financial future; access to education reimbursement; comprehensive resources to support your physical health and emotional well being; family support programs; and Flexible Time Off (FTO) so you can relax, recharge and be there for the people you care about.

BlackRock is proud to be an Equal Opportunity Employer. We evaluate qualified applicants without regard to age, disability, race, religion, sex, sexual orientation and other protected characteristics at law.

Software Engineer - React / TypeScript

Kraken Digital Asset Exchange

Help us use technology to make a big green dent in the universe!

Kraken powers some of the most innovative global developments in energy.

We’re a technology company focused on creating a smart, sustainable energy system. From optimising renewable generation, creating a more intelligent grid and enabling utilities to provide excellent customer experiences, our operating system for energy is transforming the industry around the world in a way that benefits everyone.

It’s a really exciting time in energy. Help us make a real impact on shaping a better, more sustainable future.

KrakenFlex

The energy industry is undergoing the largest transformation since industrialisation at an unprecedented rate of change and we are positioning ourselves to be at the heart of that change.

Our aim is to be the leading global provider of solutions that enable customers to release £30bn of value per annum from distributed energy resources (DERs). We are building a Software as a Service (SaaS) subscription business with a global addressable market of £2.4 billion per annum, by digitally connecting hundreds of thousands of DERs with energy markets.

We have already attained a market leading position and KrakenFlex is a recognised thought leader and innovator in the industry.

As we enter the stage of rapid commercialisation and customer account growth, we have a number of exciting new offerings to launch to customers. We’re looking for an exceptional person to help us continuously deliver features that provide value to our customers.

Our ideal engineer would be an individual who loves to engage with interesting software problems, with an interest in full-stack development and the passion to build and shape the future within a collaborative, community based environment. We operate a highly agile development approach, giving wide scope to be involved with hands on system design, test driven development, deployment and operations.

What you’ll do

Design, build and maintain high performance, reusable & reliable Typescript code
Building scalable component based UI systems
Ensure the best possible performance, reliability and quality of the KrakenFlex platform
Contribute to development across the entire stack from the front end down to the infrastructure that the platform runs on
Contribute to the software engineering culture here at KrakenFlex
Collaborate with Product and UX to bring their vision to life
Collaborate regularly with colleagues with many different professional specialities to create innovative solutions that delight our customers and colleagues
Mentor junior engineers via pairing, design review & code review
Work as part of a team of engineers, regularly seeking feedback and growing your skills as technical professionals.

What you’ll need

Experience with design systems or frontend architecture at scale
Proven experience with Typescript
Experience developing SPAs with React and UI testing
Tailwind/CSS
Ability to debug issues full stack (not just the frontend)
A drive to get things done in a collaborative, agile development environment
A proven ability to perform well in a fast paced environment
Excellent analytical and multitasking skills

It would be great if you had

Exposure to and experience with AWS and CI/CD workflows
Comfortable using AI assisted development tools to improve productivity and ability to critically evaluate AI generate code
Understanding and experience utilising Backend-for-Frontend architectural pattern
Working and developing microfrontend
Interest in performance tooling and monitoring

If this sounds like you then we’d love to hear from you.

We want to ensure you have all the tools and environment you need to unleash your potential. Need any specific accommodations? Whether you require specific accommodations or have a unique preference, let us know, and we’ll do what we can to customise your interview process for comfort and maximum magic!

Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Kraken, we’re looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.

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.

Senior Full-Stack Engineer (£80-150k + Equity) at Encord

Jack & Jill/External ATS

Job Title

Senior Full-Stack Engineer (Front-End Leaning) at Encord

Salary

£80-150k + Equity

Company

Encord - Series C AI infrastructure platform backed by CRV and Y Combinator

Location

London, UK

Job Description

You will lead development of Encord’s sophisticated editor interface, solving high-performance rendering challenges for multimodal AI datasets. Operating with end-to-end ownership, you’ll build systems that visualize complex 3D scenes and LiDAR data in the browser. This role is perfect for engineers who enjoy the intersection of computer vision, graphics-heavy front-end development, and physical AI infrastructure.

Why this role is remarkable

Work on cutting-edge browser-based visualization for massive datasets including LiDAR, 3D point clouds, and medical imaging at a scale of 5+ petabytes.
Join a high-growth leader that recently raised $60M in Series C funding at a $550M valuation to power the next generation of physical AI and robotics.
Enjoy high autonomy and end-to-end ownership in a small, elite engineering team composed of veterans from Oxford CS, Meta, and top-tier startups.

What you will do

Design and implement complex, performance-critical UI components for rendering thousands of objects in 3D/4D scenes at 60fps using TypeScript and React.
Lead full-stack projects from architectural decisions and product design through to deployment, monitoring, and measuring direct customer impact.
Collaborate with a high-performing team to build simple, robust solutions for managing multimodal data used by industry giants like Toyota and Skydio.

The ideal candidate

Deep expertise in TypeScript and React with a proven track record of building complex, rendering-intensive web interfaces or graphics tools.
Strong foundation in Computer Science with experience in canvas rendering, WebGL, or GPU-accelerated graphics within a production environment.
A proactive builder mentality, comfortable navigating ambiguity and moving across the stack (Python/Rust) to ensure reliable, performant product delivery.

Full Stack Engineer (£60k-£80k + Equity) at Lichen AI

Jack & Jill/External ATS

Job Title: Full Stack Engineer

Salary: £60k-£80k + Equity

Location: Cambridge, UK

Company Description: Lichen AI - Early stage agentic platform for AI discovery

Job Description: As the first full time engineer, you will transform a working prototype into a production grade enterprise SaaS. You’ll build robust backends, design intuitive interfaces for complex AI outputs, and establish foundational engineering practices. Working directly with an expert founding team, you will ensure the platform is secure, reliable, and ready for global enterprise customers.

Why this role is remarkable

Join as the first founding engineer with a significant equity stake and a clear path to technical leadership as the company scales.
Work alongside a world class founding team including the former Chair of the UK Government’s AI Council and Amazon Alexa’s speech recognition lead.
Build a mission driven platform that uses agentic AI to amplify human insight rather than replacing it, solving a critical adoption gap for enterprise clients.

Responsibilities

Transition a high potential prototype to a production grade platform by building secure, scalable backend systems and automated deployment pipelines.
Lead the end to end development of the user interface, making complex AI generated insights legible and actionable for non technical business users.
Implement enterprise grade security and compliance standards including ISO 27001 and GDPR to ensure safe handling of sensitive client data.

The ideal candidate

Has 3 8 years of experience shipping production web applications using modern JavaScript/TypeScript (React) and Python (FastAPI).
Demonstrates strong proficiency in cloud infrastructure, specifically AWS, and designing robust database structures and data pipelines.
Thrives in a small, fast paced startup environment and possesses a genuine interest in human centered AI that enhances domain expertise.

Security Engineer (£110K - £200K + Offers Equity) at Incident.io

Jack & Jill/External ATS

Job Title: Security Engineer

Salary: £110K - £200K + Offers Equity

Company Description: Incident.io - Series B AI incident response platform backed by Index Ventures and Insight Partners.

Job Description

Join Incident.io as our first Security Engineer to lead application security for a 60+ person product team. You will partner with engineers to design secure systems from the ground up, identifying vulnerabilities through white-box and black-box testing. This foundational role shapes the security culture at a rapidly scaling, high-trust engineering organization.

Location: London, UK

Why this role is remarkable

Foundational hire opportunity to build the security function from scratch without inheriting tech debt or rigid legacy processes.
Join a high-growth Series B startup that has raised $100M from world-class investors like Index Ventures and Insight Partners.
Work within a high-trust, ex-Monzo leadership culture that prioritizes shipping quality product daily and values engineering excellence.

What you will do

Partner directly with product teams to design and review features with security deeply integrated from the initial architecture phase.
Identify and mitigate vulnerabilities using a mix of code reviews, architecture analysis, penetration testing, and automated fuzzing techniques.
Implement pragmatic security tooling and automation across the CI/CD pipeline and GCP infrastructure to strengthen defenses without slowing delivery.

The ideal candidate

Senior or Staff-level professional with a deep track record in application security, vulnerability research, or specialized red teaming.
Hands on experience with modern web stacks, specifically Go, TypeScript, React, and cloud security within Google Cloud Platform (GCP).
Collaborative mindset that thrives when embedded in product teams, acting as a coach rather than a gatekeeper for secure coding practices.

Full Stack Engineer (C#/WPF UI) - VP

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

What We do in Equities Tech

Equities Technology at Citi is undertaking a bold, multi year transformation to build a best in class global platform across execution, prime, clearing and cross product margining. We are re engineering our technology estate to achieve world leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise. As part of the team, you’ll collaborate closely with high calibre engineers and deeply engaged business and product partners - working together to define and deliver the next generation of Equities technology at Citi.

The Team

The Equity Finance Technology team are seeking a development role for the User Interface, located in London. The role requires working with technologists across geographical locations and executing on the technical delivery. The successful candidate must exhibit strong technical skills with a proven ability to deliver using an agile methodology.

Responsibilities

Provide technical direction for a team of developers located across locations
Ability to forecast technical advances and innovation for the user interface
Code review of development conducted by others
Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
Utilise advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
Serve as adviser or coach to mid-level developers and analysts, allocating work as necessary
Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm’s reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgement regarding personal behaviour, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Qualifications

Proven of relevant experience in Apps Development or systems analysis role
Extensive experience system analysis and in programming of software applications
Experience in managing and implementing successful projects
Subject Matter Expert (SME) in at least one area of Applications Development
Ability to adjust priorities quickly as circumstances dictate

Key Skills and Experience required

Extensive development experience, specifically with building User Interface’s
Technical skills in WPF, C#, DotNet, Kafka, SQL, Git
Experience in performing QA
Proven ability to work in high pressure environment
Flexibility to work with a global team, across geographies and time zones
Strong problem-solving skills and ability to think strategically
Familiarity with agile methodologies.
Excellent interpersonal and communication skills with the ability to manage stakeholder expectations

Any Beneficial / Nice to have skills and experience

React, Java and full stack development
Knowledge of Prime Services is a plus
Bachelor’s or Master’s degree in Computer Science, Information Technology, or related field.

What we’ll provide you

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

27 days annual leave (plus bank holidays)
A discretional annual performance related bonus
Private Medical Care & Life Insurance
Employee Assistance Program
Pension Plan
Paid Parental Leave
Special discounts for employees, family, and friends
Access to an array of learning and development resources

Visit our Global Benefits page to learn more.

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

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.

Java Developer for Trading (Securities Lending) - VP

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Equities Technology

The Team

The Equity Finance Technology team are seeking a highly motivated software engineer for the Trading application, located in London. The role requires working with technologists across geographical locations and executing on the technical delivery. This role requires strong expertise in Java and the ability to work with traders in building business solutions through agile delivery.

Responsibilities

Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
Utilise advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
Serve as adviser or coach to mid level developers and analysts, allocating work as necessary
Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm’s reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgement regarding personal behaviour, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Qualifications

6-10 years of relevant experience in Apps Development or systems analysis role
Extensive experience system analysis and in programming of software applications
Experience in managing and implementing successful projects
Subject Matter Expert (SME) in at least one area of Applications Development
Ability to adjust priorities quickly as circumstances dictate

Key Skills and Experience required

Extensive development experience
Technical skills in Java, Kafka, SQL, Git
Experience in performing QA, TDD and BDD practices
Proven ability to work in high pressure environment
Flexibility to work with a global team, across geographies and time zones
Strong problem solving skills and ability to think strategically
Familiarity with agile methodologies
Excellent interpersonal and communication skills with the ability to manage stakeholder expectations

Any Beneficial / Nice to have skills and experience

React and full stack development
Knowledge of Prime Services is a plus
Bachelor’s or Master’s degree in Computer Science, Information Technology, or related field.

This job description provides a high level review of the types of work performed. Other job related duties may be assigned as required.

What we’ll provide you

27 days annual leave (plus bank holidays)
A discretionary annual performance related bonus
Private Medical Care & Life Insurance
Employee Assistance Program
Pension Plan
Paid Parental Leave
Special discounts for employees, family, and friends
Access to an array of learning and development resources

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 Mobile Engineer Software engineering London

About the Role

is on a mission to transform the shopping experience for millions of consumers. As a senior individual contributor in mobile, you’ll help design and build the products we put in the hands of our end users.

Working hand-in-hand with our engineering team and product leaders, you’ll be crafting high-performance, user-friendly experiences that operate at scale. Your role will extend beyond writing code - you’ll define architecture, lead technical discovery, and help us build the foundations that underpin our consumer offering.

What you’ll be doing

Architecting and building the mobile experiences that are used directly by millions of consumers around the world.
Owning feature development end-to-end, from discovery through to development, and monitoring through to maintenance.
Working closely with backend teams to ensure the underlying systems we build are aligned to support our mobile product evolution.
Championing best practices across the technical domain (testing, monitoring, release strategy, etc) to strengthen our foundations as we build our products.
Mentoring peers, reviewing code, and contributing to the long-term technical vision for mobile development at

Should have

Solid background in React Native, building scalable and highly performant consumer experiences.
Proven track record building across the mobile domain (e.g. experience with native iOS and Android).
Experience building and maintaining mobile apps or SDKs used by a large, active, user base.
Passionate about developer experience - clear APIs, great docs, and reliability at scale.
Excellent communication skills and experience collaborating with product, design, and backend peers.

Nice to have

Previous experience in payments, fintech, or other security sensitive domains.
Exposure to PCI compliance, tokenization, or secure data handling.

Mobile Tech Lead Software engineering London

Company Description

is a global payments company that powers billions of transactions annually. With 19 offices worldwide and a headquarters in London, we focus on creating a seamless checkout experience for merchants.

Job Overview

As the most senior individual contributor in mobile, you will lead the development of our mobile app from the ground up. This role goes beyond coding to defining architecture, shaping the technical foundation, and delivering a high performance, user friendly experience at scale.

What You’ll Do

Lead the design and implementation of our first mobile app, primarily using React Native, while maintaining flexibility to evolve the tech stack as the product matures.
Drive key architecture decisions-navigation, state management, animations, and performance tuning-to ensure scalability and maintainability.
Act as the guardian of mobile UX and performance, deciding what should be built in React Native and where native development is the better fit.
Partner with backend and product teams to deliver seamless, end to end user journeys.
Establish mobile engineering foundations-coding standards, CI/CD pipelines, testing practices, and observability-from the ground up.
Mentor future mobile hires, scale the team, and contribute to the hiring process.

Qualifications

8-10+ years in mobile engineering, with at least 3 years of production level React Native experience.
Solid background in iOS or Android native development, capable of extending and maintaining native modules when needed.
Proven experience building and maintaining mobile apps with significant active user bases.
Deep understanding of UX, performance bottlenecks, and platform specific edge cases.
Strong technical judgment, able to balance trade offs, influence direction, and adapt the stack as required.
Excellent communication skills and experience collaborating with product, design, and backend peers.
Experience in consumer first industries, ideally with high scale apps (>100K MAUs).

Senior Front-End Developer - Equity Derivatives Technology - VP

We are seeking a senior developer to join the London based team part of the Equity Derivatives Pre-Trade technology group. This role will position you as a technical and delivery lead to help to design and deliver the build out of a pre-trade request-for-quote and pricing platform used by the Equity Derivatives and Delta 1 desks globally.This is also an excellent opportunity for you to define yourself as a key contributor and technical lead within the wider Equity technology division.

On a daily basis you will be working with tech as well as front office sales, trading, and quants colleagues across all Derivative & Delta 1 desks.

Responsibilities:

Deliver consistently excellent code, adhering to our team standards and industry best practices.
Identify and define necessary system enhancements to deploy new products and process improvements.
Partner with multiple related teams to ensure business critical goals are met efficiently and within agreed timescales.
Resolve a variety of high impact problems/projects through in-depth evaluation of complex business processes.
Achieve and maintain a high level of understanding and current system processes and industry standards.
Develop comprehensive knowledge of relevant areas of business and understand their goals and long-term strategy.
Serve as advisor or coach to mid-level developers and analysts, operating within an agile / frequent delivery mindset.
Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm’s reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behaviour, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Required Qualifications:

Experience as a technical lead senior developer with front-end technology (JS, ideally React).
Extensive experience of system analysis and development of production-quality software applications.
Consistently clear and concise written and verbal communication.
Experience working with APIs and microservices systems.
Understanding of financial instruments, ideally Equity Derivatives and Delta 1 asset classes.
Proven experience in ensuring observability, robust testing quality practice and maintaining clean CI/CD pipelines.

Preferred Qualifications:

Experience working in React JS, with applications providing order/trade/real time market data or similar data structures and feeds.
Exposure to microservices systems and container/cloud deployment and hosting designs.
Experience leveraging LLMs assistant tools rationally for coding.
Additional technology experience: Kafka, ELK, Mongo, DBaaS, SaaS, Tableau.

Education:

Bachelor’s degree or equivalent experience operating in a similar role

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

What we’ll provide you

By joining Citi London, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

27 days annual leave (plus bank holidays)
A discretional annual performance related bonus
Private Medical Care & Life Insurance
Employee Assistance Program
Pension Plan
Paid Parental Leave
Special discounts for employees, family, and friends
Access to an array of learning and development resources

Visit our Global Benefits page to learn more.

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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.

Lead Full Stack Engineer - Public Sector

Location: Remote Home, GB Remote Home, GB Remote Home, GB Remote Home, GB Remote Home, GB Remote Home, GB London, GB

Eligibility for SC clearance is essential for this role.

Core aspects of the role that you will take on:

Provide technical leadership, coaching and mentoring to your assigned team
Promote knowledge sharing and adoption of good practice
Guide the ways of working for the team
Be involved in identifying appropriate technology and approaches, deciding when software should be written
Contribute to our wider developer community
Providing quality assurance of inflight tickets
Release preparation
Show and tells and demonstrations

This is the tech stack you will be working with, and during the selection process we would like to understand which you have worked with, with you can lead with and which you have familiarity with. Our objective is that as a team, overall we can deliver excellence and leadership throughout:

Typescript
React
Kotlin
Spring Boot
Github
Terraform
MySQL DB
Google Analytics and Tag Manager

Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all.

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Frequently asked questions

Our job board features a variety of React positions in London, including roles such as Frontend Developer, React Engineer, UI Developer, and Full Stack Developer with React expertise.

Most React job listings in London require some level of prior experience, ranging from junior to senior roles. Specific experience requirements are detailed in each job posting.

Yes, many employers in London offer remote or hybrid working options for React developers. Use our filters to find jobs that match your preferred working style.

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Salaries for React developers in London vary based on experience and role, typically ranging from £40,000 for junior positions up to £90,000 or more for senior roles.