full stack javascript engineer jobs in London

Build the core Xybern workspace, focusing on high-performance data visualization, collaborative reasoning tools, and audit-ready export systems.What you’ll doCollaborate with the founders to define and execute the AI Workspace roadmap.Bridge the gap between cutting-edge research and production-grade reliability.Own a substantial part of the system, from...

Join us as a Software Engineer, Full StackThis is an opportunity for a technically minded individual to join us as a Software EngineerYou’ll be designing, producing, testing and implementing working software, working across the lifecycle of the systemHone your existing software engineering skills and advance your career in this critical roleWhat you'll...

Our client is a global financial services and investment company. We're seeking a future team member for the role ofSenior Vice President, Full-Stack Engineerto join our team. This role is located inLondon or New York. In this role, you'll make an impact in the following ways: Design, build and deliver enterprise-grade AI-driven solutions, including machine...

📍 Location: UK or Netherlands 🛠️ Tech stack: Ruby, Angular, TypeScript, SASS, design system, Contentful, GitHub Actions 🎯 Focus: hands-on full stack product work, with room to grow into frontend About Tech at Bloom & Wild Group 🌸 We're Europe's largest direct-to-consumer flower and gifting business (Bloom & Wild, bloomon and Bergamotte). Our...

At IFS, we're building the next generation of AI-native enterprise software, transforming how some of the world's largest organisations manage assets, operations and critical services.This is an opportunity to work at the forefront of modern AI engineering, building intelligent products that combine Large Language Models (LLMs), agentic AI and cloud-native...

Help shape how AI is built, deployed, and scaled across JPMorganChase. You will work on business-critical products that apply modern machine learning to software, cybersecurity, and technology infrastructure. You will partner with engineers and research teams to take ideas from prototype to production. If you enjoy solving complex problems and building...

Thought Machine is seeking a Software Engineer to design and implement end-to-end features across the stack, delivering secure, scalable solutions with a strong focus on user experience.You will own components from backend services to frontend interfaces, collaborate with cross-functional teams, and translate customer requirements into deliverables....

the company is seeking a Full Stack Software Engineer to build custom web and backend solutions for enterprise clients in London. You will work with React, TypeScript, Node.js, Python, Go and/or Java in a Scrum environment with one-week sprints and peer reviews.The role emphasizes collaboration with Designers and Project Management, delivering end-to-end...

FlexTrade Systems is a provider of customized multi-asset execution and order management trading solutions for buy- and sell-side financial institutions. Through deep client partnerships with some of the world's largest, most complex and demanding capital markets firms, we develop the flexible tools, technology and innovation that deliver our clients a...

BNY | Wealth Services Platform, a business unit within BNY, is a leading provider of financial business solutions for Wealth Managers / RIAs.  We offer industry-leading custody, advisory, portfolio management, trading and banking services as a white labeled software platform for our clients to serve their clients. Our commitment to excellence and innovation...

Join us as a Software Engineer, Full Stack This is an opportunity for a technically minded individual to join us as a Software Engineer You'll be designing, producing, testing and implementing working software, working across the lifecycle of the system Hone your existing software engineering skills and advance your career in this critical role What...

Millennium is seeking a Full Stack Developer for Treasury Technology. You will partner with stakeholders, develop Treasury applications and own delivery timelines in a global tech environment.The role requires hands-on experience with .NET, C#, ASP.NET Web API, and frontend frameworks like Angular or Ember.js, plus cloud and database skills. You will...

Back End Engineer (GoLang) Location: Hybrid, Central London (1 day in the office every 2 weeks) Salary: Circa £75,000 + Benefits   An established digital technology business is seeking a talented Back End Engineer to join its growing engineering team. The successful candidate will play a key role in designing, building and maintaining scalable backend...

This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.The roleSecurity teams waste cycles re-investigating the same vulnerabilities. This...

Deutsche Bank is hiring a Full Stack Engineer (React) for London & Birmingham. You will design and deliver responsive React/TypeScript interfaces, while collaborating with business stakeholders and other technologists to ensure robust system designs for Trade Finance and Lending.You will contribute to Java back-end APIs, implement best practices, and advance...

Gerald Edelman LLP is seeking a hands-on Full Stack AI Engineer to build, maintain and extend production‑quality software across frontend, backend, cloud and data integration layers. You’ll work with Microsoft 365 Copilot, Claude Cowork and Azure, turning business requirements into scalable solutions, with guidance from the Technology team and reporting...

Harnham in London is seeking an engineer to join as an early full-stack/mobile hire, offering significant ownership across the platform. The role is hybrid, based near Waterloo/London Bridge, with equity and a path to leadership as the product scales.You will work across cloud, mobile, and connected-device tech, shaping architecture, delivering backend...

Heronic Technologies Limited in London (UK) is seeking an enthusiastic FPGA Engineer to join a fast-moving team. You will design and implement architecture sub-systems for FPGA deployment and develop FPGA-based systems that leverage our AI accelerator IP.You will optimise existing RTL designs for FPGA timing, develop register-file specifications and driver...

Oho Group is seeking a Full Stack Engineer to work remotely from the UK, with a strong focus on Python and TypeScript. You will own features end-to-end, shape system architecture and tooling, and collaborate with product and design to deliver scalable software solutions.The role offers real ownership, autonomy, and the flexibility to work remotely as the...

Healthtech-1 is hiring a product-minded Senior/Staff Software Engineer to move with extreme urgency and own end-to-end features in healthcare software. You will build across teams, directly with customers, and scale our product in a high-stakes domain from our London Stratford office.The role demands 7+ years of experience, startup/scale-up mindset, and a...