26 to 50 of 89 Senior Software Engineer Jobs in London

Senior Software Engineer (Node.js & React Native) Permanent role 🚀 📍 Central London (4 days in-office, 1 day WFH) 🧠 Senior level (5+ years) 💼 Full-time 💸 Up to 95k Join a fast-growing fintech powering co-branded card programmes for leading travel and hospitality brands like Marriott International … issuing, payments infrastructure, and embedded loyalty to help partners unlock new revenue streams and deepen customer engagement. I am looking for a hands-on senior engineer who can: - Architect and scale backend services in Node.js - Lead development of a React Native app (iOS & Android) - Own technical direction across ...

Product focused Senior Software Engineer – High-Impact Software, Real Ownership London - Onsite Extremely competitive salary ranging between £100,000 to £200,000 depending on experience. Plus excellent benefits. This isn’t a bog standard software engineering role! I’m working with a product-led software … whose platform is used globally by highly technical users to solve real, complex problems in web security technology. They’re looking for Product focused Senior Software Engineers who care deeply about outcomes over output - engineers who want genuine ownership, autonomy, and the chance to build software that ...

Hiring: Senior Software Engineer – Systems Improvement & Scale 🏢 Company: Car Planet 📍 Location: Enfield 🕘 Full-Time (Open to initial contract trial) Car Planet is a fast-growing car supermarket and automotive retail business building and running our own in-house platforms — including Autogrid (our core Dealer Management System), plus … supporting systems like Audiofy (call intelligence) and RoutePortal (logistics & routing). We’re looking for a senior, pragmatic software engineer to inspect, stabilise, and improve live, revenue-critical systems as the business scales. You’ll work hands-on with existing production systems to improve performance, reliability ...

Senior Backend Engineer London - 4 days on site Up to £110k + benefits We're hiring for one of the UK's fastest growing fintech scale-ups. As a Senior Software Engineer, you will be deeply hands-on designing, building, deploying and operating scalable infrastructure ...

Senior Backend Engineer London - 4 days on site Up to £110k + benefits We're hiring for one of the UK's fastest growing fintech scale-ups. As a Senior Software Engineer, you will be deeply hands-on designing, building, deploying and operating scalable infrastructure ...

Senior Software Engineer Location: London (Hybrid/On-site) Salary: £100,000 – £150,000 + equity About the Company We’re working with an early-stage, venture-backed legal technology startup on a mission to transform one of the UK’s most broken consumer experiences: the legal … strong foundation for navigating regulation while moving quickly in a traditionally slow industry. The Role This is an opportunity for a Staff or Senior Product Engineer to join as one of the earliest engineers in the business. You’ll be part of a small, high-calibre team ...

Senior Software Engineer (Full Stack, TypeScript) £100k–£120k | London (Hybrid) I’m working with a high-growth consumer technology company building a platform used by thousands of customers across London every day. The business operates in the rapid-delivery/convenience commerce space, combining logistics, retail … Engineers work closely with product, marketing and leadership to ship features that directly impact customer experience and commercial performance. They’re now hiring a Senior Full Stack Engineer to help build the next generation of their consumer platform. Quick overview • Salary: £100k–£120k • Location: London (hybrid, 3 days ...

Senior Software Engineer - C#, .Net, TypeScript, JavaScript Hybrid, 2 days in the office which is located near Liverpool Street £70,000 - £90,000 If you enjoy solving complex engineering problems, learning from highly capable peers, and working on a product where your contribution genuinely matters, this … progression and the chance to help shape both the product and engineering direction. You'll be part of a bright, collaborative team of talented software engineers and academically strong problem-solvers who value clean design and thoughtful architecture. The Role As a Full Stack Engineer, you'll design ...

Senior Developer | Senior Software Engineer C#, .Net, Typescript, JavaScript Hybrid, 1-2 days near Liverpool Street Salary, £85,000 to £95,000 + benefits If you enjoy solving complex engineering problems, learning from highly capable peers, and working on a product where your contribution genuinely matters … progression and the chance to help shape both the product and engineering direction. You'll be part of a bright, collaborative team of talented software engineers and academically strong problem-solvers who value clean design and thoughtful architecture. The Role As a Full Stack Engineer, you'll design ...

White Collar Factory (95009), United Kingdom, London, London Senior Software Development Engineer - Services About this role We are seeking a Senior Software Engineer who can walk in the shoes of our users, communicate & collaborate with teams in Business, Technology and Operations, bringing a passion … using software and technology to create impactful solutions. To be successful in this role, you will have an understanding of the benefits of business processes automation to enable user efficiency, the importance of well-governed solution development, and how to balance these needs to produce easy-to-use software. ...

Senior Software Engineer (Generative AI Platform) - 6-Month Contract - £650/day (Outside IR35) Location: Europe (Remote-first) Rate: £650/day Duration: 6 months (high likelihood of extension) A cutting-edge engineering team is building a next-generation GenAI platform that empowers autonomous software-engineering … contract for you. What You'll Be Working On Designing and developing Go (Golang) services powering a scalable GenAI engineering platform. Building autonomous AI software-engineering agents capable of coding, reasoning, and executing tasks end-to-end. Developing agentic workflows that enable multi-step planning, orchestration, evaluation, and self ...

Senior Software Engineer - Golang - Go - Product - TDD – paying up to £550 (Outside IR35) – Hybrid – 3 months We’re a mission-driven tech company that builds products to help people make confident decisions about their finances and everyday services. They are looking for a strong Go Developer ...

Senior C# Engineer City of London (On-site) Permanent | £90,000 – £120,000 We’re partnered with an innovative proprietary trading firm in the City of London that is hiring a Senior C# Software Engineer . You’ll work on greenfield projects, cutting-edge technology ...

Senior Software Engineer (Generative AI Platform) - 6-Month Contract - £650/day (Outside IR35) Location: UK or Europe (Europe preferred - remote-friendly) Rate: £650/day Duration: 6 months (strong extension potential) A high-performance engineering group is building a next-generation Generative AI platform designed … enable autonomous software-engineering agents and fully agentic workflows . This is a rare opportunity to operate at the frontier of AI-for-coding , working with emerging tools and shaping what engineering will look like in the next decade. If you're excited by LLM-powered development, agentic reasoning ...

Senior Software Engineer (Backend) Series A | eCommerce x Fintech | Meaningful equity Buying clothes online still isn’t a great experience. Sizing is inconsistent, returns are costly, and customers are often left guessing. Yet despite all the innovation in eCommerce, this problem remains largely unsolved. We’re working … here is the chance to build something that matters, in a team where your contribution is visible from day one. If you’re an engineer who enjoys building real products, solving meaningful problems, and working in an environment where ownership and impact matter more than process, this is worth ...

Senior Software Engineer Reference: BH-377p Working Hours: Full-time Job Type: Permanent Salary: Competitive Location: Remote or Hybrid - London office About The Client: Our client is a rapidly growing Infrastructure-as-a-Service (IaaS) provider driving digital transformation. Key Responsibilities: Architecture & System Design Design and evolve ...

Senior Software Engineer Reference: BH-377p Working Hours: Full-time Job Type: Permanent Salary: Competitive Location: Remote or Hybrid - London office About The Client: Our client is a rapidly growing Infrastructure-as-a-Service (IaaS) provider driving digital transformation click apply for full job details ...

Senior Software Engineer - (9 month contract) Salary: Negotiable Shift: Days Mon-Fri Location: Remote - Can live anywhere We are recruiting for an innovative market leader within the industry who are a major player in their field, miles ahead of the competition click apply for full job details ...

Senior Software Engineer Salary: £75k-£110k (plus attractive bonus on top) Location: London or Leeds (relaxed about hybrid or remote working, if preferred) My client is a specialist provider of sports pricing and trading technology, developing advanced simulation-based models and risk tools that underpin the performance ...

White Collar Factory (95009), United Kingdom, London, London Senior Software Development Engineer - Velocity Black UK Velocity Black by Capital One harnesses the power of artificial intelligence, the warmth of human experts and the convenience of the latest interfaces to help high-performance people actualize the full potential … celebration of excellence, actualising the full potential of our lives, and impacting the world in a positive way. We are looking for talented software engineers to join our global Velocity Black by Capital One engineering team, with the opportunity to specialise in frontend, backend or work in a full ...

Senior C++ Software Developer, Python - Financial/Banking Candidates will have 7+ years C++ experience (ideally more) and excellent knowledge of Python - ideally coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity, Fix Protocol with some Low Latency … work with the Product, Infrastructure and QA teams, to produce high performance, low latency and highly reliable code. Your goal will be to develop software which handle large amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this ...

Flight Software Engineer Up to £65,000 Competitive Benefits PackageRemote Working Permanent Candidates must be eligible to obtain a SC clearance. Candidates must have right to workin the Uk, no sponsorship is offered. We are looking for a talented Flight Software Engineer to join a fast … optimal performance. Their solutions focus on robotics and AI applications where reliability and safety are critical. You will play a key role in developing software components that enable safe and reliable operation of autonomous robotic systems within the company's robotics platform. Working closely with cross-functional teams across ...

Flight Software Engineer Up to 65,000 Competitive Benefits Package Remote Working Permanent Candidates must be eligible to obtain a SC clearance. Candidates must have right to workin the Uk, no sponsorship is offered. We are looking for a talented Flight Software Engineer to join … optimal performance. Their solutions focus on robotics and AI applications where reliability and safety are critical. You will play a key role in developing software components that enable safe and reliable operation of autonomous robotic systems within the company's robotics platform. Working closely with cross-functional teams across ...

your impact and unlock incredible career growth opportunities, join us, and build real world value. THE WORK: We are looking for a Senior Software Engineer passionate about solving ambitious problems and working directly with Ripple Trading and Markets in the cross-border payments space. We are passionate … complement Ripple’s Payments, Custody and Stablecoin business units WHAT YOU’LL DO: Be an ambitious builder, working up and down the stack, mixing software engineering, data engineering, and distributed systems knowledge to build modern enterprise payment applications. Build reliable, high-throughput, low-latency microservices to power a diverse ...

Senior Software Engineer Hayes, London Hybrid We are looking for a Senior Web Application Developer with 5+ years of experience in building and maintaining scalable, high-quality applications to join our growing tech team. As a senior member, you’ll play a key role … with various testing methodologies (e.g., unit, integration, end-to-end) and a commitment to writing well-tested code. A commitment to robust and reliable software delivery, including familiarity with practices like no-downtime deployments, proactive monitoring, and identifying potential risks. Proven ability to lead technical initiatives from concept ...