51 to 75 of 94 Senior Software Engineer Jobs in London

Senior Software Engineer – Python/React/Next.js (Agnostic Backend) £140,000–£200,000 Base + Serious equity Rare chance to join a very early stage AI platform that has just raised an unusually large Series A of close to $100 Million from tier one fintech ...

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 Location: London (Hybrid) Contract Duration: 6 months Join a specialized Applied AI team driving innovation in business operations. The group accelerates AI transformation by developing agentic systems and full-stack infrastructure to automate workflows and drive efficiency click apply for full job details ...

Senior C++ Software Developer, Python - Financial/Banking Candidates will have 5+ 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 and 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 ...

Title: Senior Embedded Software Engineer Rank: Determined by the confirmed level and scope of experience Company: Chevalier Tech Limited Location: Colindale, Greater London (On-site) Salary: Salary is competitive and negotiable based on experience. Job Type: Full-time, Permanent About Us Chevalier Tech Limited is a tier … Smart Door Handles, and Control Electronics, which are integrated into high-end passenger and super cars worldwide. About the Role As a highly Experienced Software Engineer , you will lead the software engineering team, play a pivotal role in the design, development, and implementation of embedded software ...

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 ...

Role: Senior Full Stack Software Engineer Location: London, Manchester or Bristol (Hybrid) Length: Initial 6-month contract Rate: £650-£700 per day (Inside IR35) Clearance: Active SC clearance is preferred, or candidates must be SC-eligible We're supporting a major UK Government department that's looking … Senior Full Stack Software Engineer to help design, build, and run critical digital services. This is a hands-on role suited to someone who enjoys technical ownership, mentoring others, and improving the resilience and security of live systems. Key experience Strong backend development in two or more ...

Senior Software Engineer/Developer (LLM TypeScript Node API) London/WFH to £100k Are you a senior technologist with experience of productionising LLMs? You could be joining a scaling tech company that has developed a digital distribution platform transforming electronic trading in the institutional ...

Full Stack Software Engineer | London | £80,000 - £150,000 | Python | React Location: London-based (hybrid) Salary: £80,000 - £150,000 + equity Tech Stack: Backend: Python (Flask or FastAPI or Django - ideally a blend of 2) Frontend: React, TypeScript Cloud Systems: GCP or AWS Are you a software engineer who enjoys shipping real products, solving tangible customer problems, and seeing your work in production quickly? We are working with a Series A AI technology company building automation software that sits directly in the operational core of key businesses. This is not experimental AI. This ...

Role: Senior Full Stack Software Engineer Location: London, Manchester or Bristol (Hybrid) Length: Initial 6-month contract Rate: £650-£700 per day (Inside IR35) Clearance: Active SC clearance is preferred, or candidates must be SC-eligible We're supporting a major UK Government department that's looking … Senior Full Stack Software Engineer to help design, build, and run critical digital services click apply for full job details ...

Senior Software Engineer (Agentic AI) Salary: £120,000 + Equity Location: London Build and own the core systems behind autonomous AI agents that operate in real time, over voice, delivering immediate impact in healthcare. The Opportunity This opportunity is to join a fast-growing AI company building … safety are non-negotiable, as the technology directly supports clinicians and patients in real-world environments. It's a chance to join a small, senior, in-person team operating at the frontier of applied AI with immediate impact. Role and Repsonsibilities This role focuses on designing and building ...

Role: Senior Software Engineer, Frontend Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest … stack development (Node.js, Express, etc.) Developing white-label applications Building internationalised applications Familiarity with frontend observability best practices (we use Datadog) Experience in agile software development methodologies Why Travelex? To remain the world’s leading foreign exchange specialist, we are focused on making our customers’ lives simpler, more engaging ...

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role building high … performance, scalable software for real-world, high-traffic systems. About the Role You’ll join a permanent feature team, taking end-to-end ownership of services, from design and development to testing, deployment, and optimisation. Your focus will be on building robust microservices that support high-traffic user experiences ...

looking for a Senior Software Engineer to join a growing team building smart, scalable tools used by professionals across a range of industries. You'll work onsite in London, helping shape robust backend services and responsive user experiences using React and NextJS. What You'll Do Build ...

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 Join a Service Modernisation team driving AI-first software development in financial ...

Role We are helping to hire a Senior Software Engineer for an exciting AI startup. This is a core platform role with real ownership. You will work on data integrations, platform execution, and the systems that power AI-driven analytics. What You Will Be Doing Building core ...

Longshot Systems we build advanced platforms for sports betting analytics and trading. We re looking for a Senior Software Engineer to join the team that owns and develops our trading platform. Longshot is a small, focused company and so the role suits someone who can architect ...

wide variety of financial services, including cross-border payments, institutional crypto liquidity, digital asset custody, and our enterprise-grade stablecoin RLUSD. As a Software Engineer at Ripple, you'll work on payment technologies, building scalable solutions that power the future of finance. Your primary responsibilities will … observability, ensuring Ripple products interact seamlessly with global banks and payment providers in a consistent and trustworthy way. We are looking for a software engineer passionate about learning and understanding the way a complex fintech system works end-to-end and can help drive forward the development. ...

trajectory is ambitious, from zero to seven figures in recurring revenue within its first year and plus over £20million in funding already!! As a Senior Software Engineer, you’ll join a small, high calibre team where ownership is everything. You’ll work primarily on the backend, integrating … next tech unicorn, together, in the same room, ask the big players. What you’ll need to succeed: Strong experience building production quality software (Java, TypeScript, React or Python) Curiosity and adaptabilit y: you learn new technologies quickly and apply them effectively Hunger and drive: you’re comfortable working ...

Senior iOS Software Engineer 11 Months initial contract Stratford - 4 days onsite/1 remote £503 per day (Inside IR35) Overview Join the company's Pro Mobile Team working on the Pro Telematics Drive App - a unified mobile solution for commercial fleet management across North America … Swift Testing, Snapshot & UI Tests - Tuist, Swift Package Manager - Bitrise CI/CD - Observability and analytics tooling - Backend-for-Frontend API layer Additional Attributes - Senior-level delivery experience - Collaborative and inclusive - Comfortable with ambiguity - Flexible across complex projects - Willing to mentor others Disclaimer: This vacancy is being advertised ...

Software Engineer London | Full-time | Hybrid | Shoreditch/Liverpool Street Create the Future of Travel With Us Whether it's visiting the people closest to us, starting an exciting adventure, or a career-defining business trip, travel is essential. Yet we've all experienced the aches and pains ...

Senior Backend Software Engineer (Python) Blockchain/Web3 Remote £50-£80k An ambitious Web3 and blockchain-focused team working to create more equitable ownership and compensation models, particularly within gaming. They collaborate closely with leading Layer 1 protocols to deliver secure, scalable infrastructure and provide global economic ...

entirely new network for the world's money. For everyone, everywhere. . Job Description About the role: We are looking for a talented Software Engineer to join our Recommend team in the London office. The Recommend team builds and owns the recommendation experience that allows customers to recommend … solve customers' first international money needs in a way that's clear, easy and delightful. Our team is diverse and is made of software engineers, data analysts, and designers and more who collaborate on a daily basis to continuously improve customer experience with recommendation journeys at Wise. What will ...

Senior Java Engineer (Core Java) £100,000 - £130,000 Central London - Hybrid A high-growth, privately backed Enterprise SaaS company is seeking a Senior Core Java Engineer to join its London-based engineering team. The organisation builds large-scale, mission-critical platforms used by some … Contribute across design, development, testing, deployment and support Collaborate closely with other engineers to deliver customer-centric solutions Mentor and be mentored within a senior engineering team Promote best practices around code quality, testing and reliability Participate in team support and operational responsibilities Technology Environment Core Java (deep ...

Senior Data Software Engineer (Public Sector Consultancy) Salary: £55 - 72K + Benefits Location: London or Manchester (aligned to office for client on-site requirements) Working Pattern: Hybrid/On-site depending on client needs Security Clearance: DV Clearance required - Can Start With Active SC You will join … potential. Empowering individuals and building strong teams are central to delivering meaningful outcomes for clients and citizens. This role is suited to Data Software Engineers with a strong technical foundation and an interest in data engineering, data science, and machine learning. You will work within agile, multidisciplinary teams alongside ...