1 to 25 of 33 Permanent Senior Software Engineer Jobs in London

Senior Software Engineer/Principal Software Engineer- C++, Python - Financial/Banking. Candidates will have a minimum 8+ years C++ experience and excellent knowledge of Python -coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity. … 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 ...

Senior Software Engineer Salary: Negotiable (Depending on Experience) Location: North London Area Schedule: 3-days on site and 2-days WFH per week The Opportunity We are supporting a globally recognised engineering business at the forefront of advanced radar and surveillance technology in the search … Senior Software Engineer. This is an excellent opportunity to play a key role in the development of innovative, high-performance software solutions used within cutting-edge maritime navigation and defence systems. You will take ownership of software design across the full lifecycle, contributing to both ...

Senior Software Engineer (Python) Hybrid London (2 days/week) Up to £100,000 + Benefits We're hiring a Senior Software Engineer to play a key role in building and scaling a high-impact ad-fraud prevention platform used globally. This … senior IC role for engineers who enjoy ownership, solving complex problems, and setting a high bar for engineering quality. What you'll do: Lead delivery of complex, cross-service features Make pragmatic architecture and design decisions Own services end-to-end, including performance, reliability, and incident response Set standards ...

Senior Software Engineer - Rust (Any Backend Language Accepted) Fastest Growing Start-up in the UK | Defense | Senior Software Engineer | Rust We are partnered with one of the UK's fastest-growing start-ups. They are a very technically focused group building cutting-edge decision … just over two years, and already have a lot of customers in the UK. On-site | London Up to 150,000 + Equity Senior/Principal Software Engineers: They're looking to add Senior/Principal Engineers to their team. The team are open to hiring pure ...

Senior Software Engineer Location: London, UK Working Environment: Hybrid (2 days on-site per week) The company is a leading financial data and analytics company and looking to hire a Senior Software Engineer with experience of working on the development of cloud databases. … Design, analysis and implementation of features in the data distribution platform. Ensure system reliability by implementing company and industry best practices. Implement workflow management software to automate operational tasks and optimize the utilisation of infrastructure and applications. Design and implement CI/CD workflows to maintain software quality ...

Senior Software Engineer (DevOps) — Remote £70,000 – £75,000 per annum (UK) | Equivalent ranges available for other countries No sponsorship offered Our client writes code that actually changes lives. Not in a "we disrupted the lunch ordering space" kind of way. We mean genuinely changes lives — restoring … people worldwide are losing their vision unnecessarily, and this award-winning team is on a mission to fix that. They're looking for a Senior Software Engineer to join them. So what will you actually be doing? You'll be joining a tight-knit, senior engineering ...

Senior Software Engineer - SC Cleared Location: London Salary: Up to £80,000 Clearance: Active SC Clearance and eligibility for DV To apply, email : Overview A leading organisation delivering operational cyber capabilities is looking for a Senior Software Engineer to join its growing technical team … highly secure, mission-critical projects supporting cyber operations in a fast-paced environment. The successful candidate will be responsible for designing, building, and maintaining software solutions used within operational cyber programmes, working closely with engineers, analysts, and technical stakeholders. Key Responsibilities Design, develop, and maintain software applications using ...

Title: Senior Software Engineer Job Type: Permanent Location: London, UK (Hybrid 3 days/week onsite) About the Role We're looking for a Senior Software Engineer to join an embedded delivery team supporting client's technology and product teams as a senior technical lead within an agile environment. What You'll Do Design, build, and maintain scalable, production-grade software across web, API, and data layers Own technical delivery end-to-end from requirements gathering through to deployment and ongoing support Integrate AI and automation capabilities into existing ...

Title : Senior Software Engineer (Compilers) Company : HPC & AI Location : London (primarily remote) Compensation : Up to £190,000 Company : An advanced HPC R&D firm, looking to expand the UK compiler team. Most of the team are ex-Big-Tech, ex-FAANG or ex-Chip firms. They joined … technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring. Role : Senior Software Engineer position with an emphasis on AI Compiler development. You will be a significant hire and will own much ...

Title : Senior Software Engineer (GPU Drivers) Company : AI Acceleration Location : London (very flexible WFH) Pay : Up to £160,000 + bonus and benefits Company : An advanced HPC R&D firm, looking to expand their GPU Driver team. Most of the team are ex-Big-Tech, ex-FAANG … technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring. Role : Senior Software Engineer position. You will be a significant hire spearheading much of their 2025 development. Much of the team will be built ...

Title: Senior Software Engineer Job Type: Permanent Location: London, UK (Hybrid 3 days/week onsite) About the Role We're looking for a Senior Software Engineer to join an embedded delivery team supporting client's technology and product teams as a senior ...

Senior Software Engineer - SC Cleared Location: London Salary: Up to £80,000 Clearance: Active SC Clearance and eligibility for DV To apply, email : Overview A leading organisation delivering operational cyber capabilities is looking for a Senior Software Engineer to join its growing technical team ...

Senior Full Stack Software Engineer (TypeScript/JavaScript, Node.js, React, and Next.js) London £90,000 - £100,000 + benefits We're looking for a product led, Senior Software Engineer who can be the generalist in the team, bridge front and back, solve complex issues ...

Senior Software Engineer Location: UK Remote/Hybrid Salary: up to £80,000 ABOUT THE COMPANY Financial Times' fastest-growing software company in Europe, this is an AI and automation platform — used by thousands of people, every single working day. Founded in 2020, they've grown … engineering team is small enough that your decisions matter, large enough that you're not doing it alone. THE ROLE This is a senior, hands-on engineering role — not a stepping stone to management, though it can be if that's where you want to go. ...

SENIOR SOFTWARE ENGINEER £80,000 - £85,000 + 10% BONUS LONDON This is an exciting opportunity to join a global media organisation where engineering plays a central role in supporting digital advertising across nationwide platforms. THE COMPANY Our client is a privately owned, global organisation operating across ...

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 ...

About The Role 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. This role involves … mentoring junior engineers, collaborating with cross-functional teams, and driving the adoption of best practices in software development. We value adaptability over specific technology expertise. While we are technology-agnostic and expect you to be too, we will fully support your development with the necessary training to master ...

excellent opportunity to join one of the UK's leading software consultancie s , renowned for its strong presence in the public sector while also delivering private and SC-cleared projects. As a Senior Software Engineer, you will look to design, build, and deliver high-quality software … architecture, mentor junior engineers, and collaborate with cross-functional teams across public and private sector programmes. Key responsibilities include: * Designing and developing scalable, secure software solutions * Contributing to architectural decisions and technical direction * Mentoring junior engineers and promoting best practices * Working closely with Product, UX, DevOps, and QA teams ...

time to step into a role where you take real ownership of complex, high-precision technology? An innovative Oxfordshire-based company is seeking a Senior Software Engineer to help shape and deliver the software behind next-generation systems. This is a hands-on role combining technical … leadership with close collaboration across software and advanced hardware teams. You will play a key role in designing and developing robust applications that directly control precision hardware platforms. The position goes beyond feature delivery. You will influence architecture, strengthen engineering standards, support system deployments and mentor a small team ...

time to step into a role where you take real ownership of complex, high-precision technology? An innovative Oxfordshire-based company is seeking a Senior Software Engineer to help shape and deliver the software behind next-generation systems. This is a hands-on role combining technical … leadership with close collaboration across software and advanced hardware teams. You will play a key role in designing and developing robust applications that directly control precision hardware platforms. The position goes beyond feature delivery. You will influence architecture, strengthen engineering standards, support system deployments and mentor a small team ...

Purpose of the Position As a Senior Software Engineer, you will be part of a cross-functional, service-oriented team, working on extending and maintaining our Affiliate Marketing platform. You design and build reliable services by writing clean, secure, and well-tested code, following modern engineering best … evolve over time, offering opportunities to gain deeper knowledge and experience within the online and affiliate marketing domain. Skills & Expertise 6+ years of professional software engineering experience Strong foundation in OOP and comfort working with multiple programming languages, ideally incl. Java/Spring Passion for clean, maintainable code with ...

excellent opportunity to join one of the UK's leading software consultancie s , renowned for its strong presence in the public sector while also delivering private and SC-cleared projects. As a Senior Software Engineer, you will look to design, build, and deliver high-quality software ...

looking for a Senior Embedded Software Engineer to develop advanced, real-time software solutions for complex systems. You will be responsible for delivering software from initial concept through to fully verified solutions, working across the full development lifecycle. Key Responsibilities Design, develop, and maintain high … quality software using best engineering practices Take ownership of software development from requirements through to verification and validation Support and enhance existing software in line with evolving project and customer needs Contribute to system architecture, design reviews, and technical decision-making Collaborate with multidisciplinary teams including systems ...

Senior AI Software Engineer is a core technical role within the AI Lab. This person helps design and build the foundation that AI solutions are built on, bringing engineering depth, an eye for systems thinking, and a commitment to quality that raises the bar for the whole … technical guidance, code review, and practical problem-solving. What we are looking for:The ideal candidate is a capable, hands-on engineer with a growing interest in how AI systems are designed and structured at scale - someone who takes quality seriously and brings considered thinking to every build. ...

Embedded Software Engineer | UK (Hybrid) My client is an innovative technology company developing advanced hardware and networking solutions for high-performance computing environments. Theyre looking for Software Engineers to build embedded and host software for high-speed systems, working closely with hardware teams to deliver production … ready solutions from early prototypes. Responsibilities Define software architecture with cross-functional teams Develop embedded software for network interface hardware Linux PCIe driver development Build network control and monitoring tools (server/client) Enhance DevOps and CI/CD pipelines Requirements Strong embedded software development experience Experience ...