126 to 150 of 206 Senior Full-Stack Engineer Jobs in London

chat and voice for some of the world's largest travel brands. We're looking for a senior full stack engineer to anchor this product, owning the realtime and voice layer end to end while building across React/TypeScript front ends … mentoring An ideal candidate has 6+ years of software engineering experience, with senior-level ownership of production systems and genuine full-stack range Hands-on realtime systems experience, such as voice applications, WebRTC/SIP, streaming media, or comparable low-latency products Strength ...

Meet DeepL DeepL is a global AI product and research company focused on building secure, intelligent solutions to complex business problems. Over 200,000 business customers and millions of individuals across 228 global markets today ...

About The Role Job Level: 9 UK Wide We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems ...

J.P. Morgan in London seeks a Full Stack Engineer to design, build, and support scalable web applications and integrations using Java, Python, and React. You will collaborate with product, marketing, and partners to translate requirements into technical solutions and contribute to AI initiatives ...

Hireful are looking for a Senior Software Engineer to take our new platform, ClearHR from scoping to a working product: backend, frontend, and the architecture decisions in between. You'll work directly with our CTO, on the same stack as our already successful & fully ...

Broadridge Financial Solutions in London is seeking a Senior Full Stack Developer to join the AI Enablement Team. You will design and implement AI-enabled platform capabilities with a focus on GenAI projects, leading code quality and collaborating … across cross-functional teams. The role requires strong Python and ReactJS skills, Java Spring experience, and a track record in building scalable full-stack solutions. Hybrid work arrangements and a dynamic, learning-focused environment are offered. #J-18808-Ljbffr ...

heading to the office, or leaving earlier when needed to accommodate family commitments. This in-office expectation does not apply to contractor positions Senior Fullstack Engineer UK Full-time/London (Engineering) About Applied Intuition Defence Applied Intuition UK is a software and infrastructure … Google, Lockheed Martin, and the UK and US Armed Services. Learn more at appliedintuitiondefense.com. About the role You would be the first fullstack engineer we hire onto the UK team, joining software and autonomy engineers whose tools are already relied on across live programmes. As that portfolio grows ...

features—you’ll be solving sophisticated architectural challenges, ensuring systems scale reliably under increasing load and complexity. Key Responsibilities Design and implement full-stack solutions across core product, AI workflows, and infrastructure Architect and evolve event-driven systems for scalability, resilience, and performance Collaborate closely with … roadmap planning What You’ll Need Strong experience building and scaling distributed, event-driven systems in production Deep understanding of modern full-stack engineering (TypeScript, React/Next.js, tRPC, etc.) Experience with cloud-native infrastructure, especially serverless, AWS/GCP, and CI/CD workflows Expertise ...

Ebury in London is seeking a Senior Fullstack Engineer for the Payments Experience team. You’ll architect high-scale web applications and platform tooling that empower the entire engineering org to ship fast and reliably. Bring 5+ years of building high-performance, client-facing web apps ...

that connects enterprise data sources to North's agents. We are a small team owning a wide surface area, and we need a senior generalist who can move freely across backend and frontend as the roadmap demands. You will pick up any layer of a feature, from ...

Currence is an AI-native market intelligence company focused on clean, cheaper and faster energy solutions. We’re a hybrid team with London headquarters and a strong global presence, seeking engineers who can work across ...

Iterum Trading Limited is seeking a Mid‐Level to Senior Full Stack Developer in London to help build Iterum IQ, focusing on AI/ML‐driven features. You’ll work closely with the Head of Product and a Fractional CTO, shaping architecture and mentoring ...

CreateFuture, an AI-native consulting partner, is seeking a Senior Fullstack Engineer to shape technical direction, mentor teams and embed AI into delivery. You’ll design scalable backend in Java/Spring and frontend in React, building APIs and microservices that power business outcomes. ...

Parser Limited is seeking a Senior Fullstack Engineer to design, develop, and maintain scalable backend services and robust frontend interfaces. The role emphasizes microservices, API development, and secure, performant systems with ReactJS on the frontend. You will collaborate with product managers and engineers to deliver ...

requiresSecurity Clearance or ability to get SC in short timescales. About the Role We are seeking a Senior Full Stack Engineer who is passionate about building high‐quality software and designing robust systems. You will work on complex, large‐scale solutions across … collaboration, and continuous learning, and we actively support innovation and knowledge sharing. Your Future Role As a Senior Full Stack Engineer, you will: Design, build, and deploy scalable, high‐quality systems Translate business and client requirements into technical solutions Work directly with ...

Vanguard is seeking a Senior Full Stack Software Engineer to design, develop and optimize front office applications within the GIFS team. You will collaborate directly with portfolio managers and product owners to deliver high-impact software. The role requires deep experience ...

Lendable is seeking a full‐stack Python engineer to join the Central Operations team in a fast‐moving fintech environment. You will ship web apps and automation that empower Ops—driven by data, AI, and scalable architectures. You’ll work with FastAPI, Python ...

Zaizi Ltd in London is seeking a Senior Full Stack & Systems Engineer to join Defence delivery. You will build mission-critical web applications and API backends for MoD programmes, while contributing to edge and TAK platforms. You will work at the intersection ...

Swap Commerce Limited in London is seeking a Full Stack Engineer to join our growing engineering team. You will design and implement elegant software across the stack, choosing the right tools and libraries to meet product needs and scale. You will work ...

Meet DeepL DeepL is a global AI product and research company focused on building secure, intelligent solutions to complex business problems. Over 200,000 business customers and millions of individuals across 228 global markets today ...

Security Clearance or ability to get SC in short timescales. About the Role We are seeking a Senior Full Stack Engineer who is passionate about building high-quality software and designing robust systems. You will work on complex, large-scale solutions across … guide other engineers, this role is engineering-led rather than people-management-focused. Where Purpose Meets Career Technology This is a true full-stack role , offering exposure to a broad range of technologies and architectures. You will continuously upskill while working alongside highly talented engineers, selecting ...

Security Clearance or ability to get SC in short timescales. About the Role We are seeking a Senior Full Stack Engineer who is passionate about building high-quality software and designing robust systems. You will work on complex, large-scale solutions across … guide other engineers, this role is engineering-led rather than people-management-focused. Where Purpose Meets Career Technology This is a true full-stack role , offering exposure to a broad range of technologies and architectures. You will continuously upskill while working alongside highly talented engineers, selecting ...

equity, high yield, convertible and international securities for institutional investors and high net worth individuals. Role OverviewJefferies is seeking a highly experienced Senior Full Stack/Native Cloud Engineer at Vice President level to join our London Technology team. This … build resilient, high-performance platforms and user-facing solutions that support critical front-office workflows. This role is well suited to an engineer who is comfortable operating across the full technology stack, from backend services and distributed data architecture through to responsive user interfaces ...

Sanderson in London is seeking a Full Stack Developer with a strong React and Node background to join a fast-growing technology company delivering innovative digital products to a global customer ...

leading fintech software start-up located in the City of London is seeking a full-stack software developer to optimize and build features across their award-winning web platform. The ideal candidate will bring 4-7 years of experience in web development, with a strong proficiency ...