51 to 75 of 108 Senior Software Engineer Jobs in the City of London

Senior Software Engineer City of London - 1 Day per week Insurtech/Climate About the role This organisation creates insurance products that support the transition to a low-carbon economy. The team is small, fast-moving and focused on modernising a traditionally slow sector. They ...

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 ...

Senior Backend Engineer| Edtech | Remote (±3 hours GMT) We are partnered with a rapidly growing Edtech looking for a Senior Backend Engineer to support the next stage of its growth. The company focuses on giving students around the world access to high-quality teaching by combining … great educators with modern technology. Key Requirements • 5+ years experience, ideally with PHP or Java • Good understanding of software architecture and scalable systems • Experience working in fast-moving product teams • Experience with domain-driven design and CI/CD is valued What the role will involve • Create reliable ...

Senior Engineer: Pioneering the Next Generation of Financial Technology Our client, a disruptive technology firm, is seeking a Senior Engineer to join their mission to fundamentally revolutionize the global banking industry. They are developing the world’s first truly autonomous and composable technology platform designed … redefines how the largest banks worldwide manage their operations. 📍Location: Central London - fully on site Why This Role? This is an opportunity for an engineer who thrives on tackling complex distributed systems and writing mission-critical code . The client's vision is to introduce simplicity, openness, and modular ...

Senior Software Engineer I (Python & AI) Are you ready for the next step in your engineering career? Would you enjoy working on our cutting-edge products? About our team: We are strengthening our software engineering team to modernise our existing application stack, powering one of LexisNexis … Python, C#/.Net, SQL, AWS (EKS, S3, Lambda, CDK, etc.), Applied AI/ML libraries and frameworks. About the role: We are hiring Software Engineers to work on modernising and enhancing a key product, LexisNexis® Classification. This product uses AI to read millions of patents globally and pull ...

Senior Software Engineer I- (C# .NET/Angular) Are you ready for the next step in your engineering career? Would you enjoy working on our cutting-edge products? About Our Team: We are strengthening our software engineering team to modernise our existing application stack, powering … Python, C#/.Net, SQL, AWS (EKS, S3, Lambda, CDK, etc.), Applied AI/ML libraries and frameworks. About The Role: We are hiring Software Engineers to work on modernising and enhancing a key product, LexisNexis® Classification. This product uses AI to read millions of patents globally and pull ...

Full-Stack Engineer - Node/TypeScript/AI 🌍London 💰£70-90k A well-funded early-stage startup in London is building an AI-driven commerce platform using agentic AI to remove the invisible admin that slows small businesses down. Think: AI systems that listen, interpret, and take action … helping independents run operations effortlessly while staying focused on what they do best. I'm hiring a Senior Software Engineer to join the core team. You’ll work across the stack (Node, Python, React/Next.js, TypeScript, AWS) to build the intelligence behind ordering, payments, and workflow ...

Head of Web (Senior Software Engineer) A rapidly scaling health-tech organisation (Series A funded) is seeking an exceptional Head of Web to lead the architecture, development, and future direction of its core web platform. If you’re a deeply experienced React + TypeScript engineer … closely across mobile, backend, and product teams Mentor engineers and help shape a world-class engineering culture What You’ll Bring 5+ years’ professional software engineering experience Deep expertise with React + TypeScript Proven ownership of complex production web applications Strong architectural and design understanding Excellent problem-solving ...

SENIOR EMBEDDED SYSTEMS ENGINEER – PADDINGTON (HYBRID) KEY POINTS Hybrid role based in Paddington, London Salary up to £110,000 depending on experience Senior-level position working on safety-critical embedded and control systems Opportunity to take ownership within a growing engineering function ABOUT THE CLIENT … flexibility Competitive salary up to £110k Exposure to cutting-edge autonomous and control system projects Strong engineering culture with long-term progression opportunities THE SENIOR EMBEDDED SYSTEMS ENGINEER ROLE: As a Senior Embedded Systems Engineer, you’ll play a key role in the design, integration ...

hiring a Senior Software Engineer to help build and scale a next-generation agentic data analytics platform used by medium to enterprise teams. Business data is critical - but getting answers from it is still slow, complex, and overly technical. We’re building an AI-native platform that ...

About Equali Equali is a Techstars and angel-backed B2B software company providing FinTech, eCommerce and SaaS businesses with effortless reconciliation and accounting automation. Supported by new partnerships and favourable regulatory trends, we expect strong growth over the next 12 months. We're already working with customers like Sunday … looking to expand across FinTech and eCommerce in particular. About You We’re looking for a hands-on Senior Software Engineer with full-stack experience and a focus on backend development, who is excited to help shape and scale a fast-growing product. About the role ...

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 ...

Senior Software Engineer - Full-Stack Location: London Working Model: Hybrid 3 Days Salary: Up to £128,000 Ready to build tech that actually means something? This team is powering the next generation of electrification EVs, solar, batteries, heat pumps, smart devices all connected through a platform thats ...

working with a well-funded Medical AI start-up that is seeking a talented Senior Software Engineer to help buildout sophisticated tooling and infrastructure that will power their groundbreaking generative AI models. This is a rare opportunity to work at the intersection of advanced software engineering ...

Senior Software Engineer/Tech Leads (x5 roles) – C#, .NET, Azure, Testing, Remote - Scotland - Award-Winning, High-Growth Tech Scale-Up Award-Winning, High-Growth Tech Scale-Up | AI-Powered SaaS | £67,000–£80,000 + Market-Leading Benefits Areti Group – Carbon Positive Tech Recruitment | People & Planet … hiring five exceptional Development Team Leads/Tech Leads for one of the UK’s fastest-scaling, best-funded, and most forward-thinking software scale-ups . This company builds an advanced AI-powered platform used by some of the world’s most recognised organisations - powering smarter decisions, better ...

Software Engineer | Security Platform | London Looking to build something hugely impactful within security? This VC-backed startup is redefining how enterprises secure the cloud - already processing billions of events weekly , doubling ARR last quarter , and landing on multiple “Startup to Watch” lists out there. Now they’re bringing … further Software Engineers to help shape the core product, scale the platform, and push the limits of cloud security tech. You’ll join a world-class team solving complex engineering challenges - from distributed systems and large-scale data pipelines to real-time detection and automation. Every line of code ...

Senior SDET Engineer - FinTech - Java, JBehave Oliver Bernard are currently seeking a Senior SDET to join a well-established team for a FinTech client of ours based in London. Their aim is to boost business growth by providing faster, easier and a more secure way to access … credit. The Senior SDET Engineer will be responsible for creating and executing test cases, performing manual and automated testing, and maintaining and improving test automation scripts. The ideal candidate will have at least 5 years’ experience as a SDET Engineer, ideally operating in a Senior capacity ...

fantastic opportunity for a suitably experienced Senior Backend Engineer seeking a role where they can make a real difference. You will help define how AI is safely used in front line healthcare. As a Senior Backend Engineer , you’ll play a key role in building … core infrastructure that powers our clients platform. This is a hands-on role requiring deep experience in backend engineering, cloud systems, and architectural thinking. Senior Backend Engineer Location: London - Hybrid Salary: £80,000 - £110,000 + Stock Options + Benefits Tech Stack Cloud-native platform. Experience with ...

Senior Full Stack Engineer (React, Typescript, Node, AWS) HealthTech, up to £90k London (once or twice per fortnight in office) Troi Search are delighted to be partnering once again with this innovative & mission driven HealthTech client. We’re now looking for a Senior Full Stack Engineer … engineering standards Experiment with emerging tech like AI, computer vision, and advanced analytics What we’re looking for 5+ years building SaaS or enterprise software Strong experience with React, Typescript, Node & AWS Technologies Solid cloud and DevOps knowledge Comfort working in data-sensitive or regulated environments A pragmatic mindset ...

Senior Java Engineer (Kubernetes, Kafka, Cloud) – Finance – London Daily rate: £500 - £700 (inside IR35) Duration: 12 months Hybrid: 8 days per month Start: ASAP A banking client of mine is looking for a Senior Java Engineer with Kafka and Docker skills to join the team ...

most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market … systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with ...

Senior Fullstack Engineer We are looking for engineers who could make a real impact as we scale our product and team. We are growing our engineering team from 8 to 15, and have space for senior, staff and principal fullstack engineers across London and Paris. … Leadership Mentor junior engineers and contribute to their professional growth through pairing, reviews, and feedback Represent engineering in cross-functional discussions (including Finance, Operations, Senior Leadership) to help translate business goals into technical plans Set and uphold team standards for communication, collaboration, and technical excellence Culture Communicate internally ...

seeking an experienced Senior Java Software Engineer to join the IT team at a leading bank, supporting the delivery, maintenance, and enhancement of core systems across various business areas, including operations, compliance, transactions, and client management. This is a 6-month contract role offering an excellent … with experience in regulated environments, financial services, or government/public sector organisations. In this role, you will be an integral part of the software development lifecycle, working closely with Senior Java Developers, UI/UX teams, and Agile Transformation to architect, build, and deliver greenfield, brownfield ...

Founding Software Engineer| DeepTech | On-site London | Up-To £180,000 + Equity A well-funded, early-stage AI infrastructure startup is tackling one of the most persistent bottlenecks in the physical world. The team is building the core AI systems that will enable the next wave … real-world, AI-driven innovation. They’re looking for a founding engineer who thrives on ownership, moves fast, and wants to help shape both the product and the company from day one. This is a hands-on role in a small, highly technical team where you’ll ship early ...