626 to 650 of 1,343 Senior Software Engineer Jobs in the UK

Navan has transformed the corporate travel, payment, and expense landscape by consistently prioritizing user needs. We are seeking a Senior Software Engineer (Backend) for our AI-first engineering team to drive the architecture of a next-generation corporate expense management platform. In this role, you will scale … dedication to excellence is why we’ve been recognized as a Best Place to Work by Built In (2023–2026), a G2 Best Global Software Company (2025–2026), Forbes Cloud 100 (2022–2025), and CNBC Disruptor 50 (2022–2025). At Navan, we provide an environment where top talent ...

Leap29 is seeking a Senior Software Engineer to design, develop and modernise high‐performance desktop and cloud applications using C#/.NET. You will work hands‐on in a technically focused team, contribute to architecture discussions, code reviews and CI/CD practices, and help evolve existing ...

tech company in Manchester is seeking a Senior Software Engineer to join their product team. In this role, you'll be involved in all aspects of product development from inception to deployment, with a focus on teamwork and engineering best practices. The position offers a competitive salary ...

CommonAI CIC is seeking a Senior Software Engineer to help deploy, extend and optimise vLLM and related inference engines for our AI infrastructure projects. You will work across the Scaling Inference Lab and the High Assurance programme to drive performance, reliability and safety in production‐grade systems. ...

Clearwater Analytics, Ltd. is seeking a Senior Software Engineer to join the Beacon Core Engineering team. You will design, build, deploy, and maintain high-quality code, collaborating with cross-functional teams to enhance our Beacon Cloud platform and client tooling. The role emphasizes using AI agents ...

Attest is seeking a Senior Software Engineer to join the Measure squad and help evolve our quantitative survey platform. You will work across frontend and backend, building scalable features and shaping direction while mentoring teammates. The role emphasizes AI-native development, real-time data, and robust visualisations ...

Navan has transformed the corporate travel, payment, and expense landscape by consistently prioritizing user needs. We are seeking a Senior Software Engineer (Backend) for our AI-first engineering team to drive the architecture of a next-generation corporate expense management platform. In this role, you will scale ...

Civica in the United Kingdom is looking for a Senior Software Engineer to work on critical public sector software. You will design and build solutions across both legacy and greenfield environments, focusing on systems that greatly improve public services. The right candidate will have experience in software ...

Sculley and is headquartered in New York City with offices around the world. To learn more, go to www.the company.com. THE ROLE As a Senior Software Engineer on the LiveIntent Real-Time Ad Serving team, you will design, develop, and own the business logic that powers programmatic … integration Participate in architecture discussions and influence the technical roadmap Participate in on-call rotation to support production systems DESIRED CHARACTERISTICS 5+ years of software engineering experience in backend development Deep understanding of computer science fundamentals: data structures, algorithms, performance optimization Experience building and operating distributed systems in production ...

CreateFuture in Edinburgh, Leeds, Manchester, London or remote locations seeks a Senior Software Engineer to build scalable Java, Node.js and AWS backends. You will shape architecture, mentor engineers, and drive AI/automation initiatives across client engagements. Strong design sense, collaboration and delivery focus are essential. ...

CreateFuture in Edinburgh, Leeds, Manchester, London or remote locations seeks a Senior Software Engineer to build scalable Java, Node.js and AWS backends. You will shape architecture, mentor engineers, and drive AI/automation initiatives across client engagements. Strong design sense, collaboration and delivery focus are essential. ...

CreateFuture in Edinburgh, Leeds, Manchester, London or remote locations seeks a Senior Software Engineer to build scalable Java, Node.js and AWS backends. You will shape architecture, mentor engineers, and drive AI/automation initiatives across client engagements. Strong design sense, collaboration and delivery focus are essential. ...

CreateFuture in Edinburgh, Leeds, Manchester, London or remote locations seeks a Senior Software Engineer to build scalable Java, Node.js and AWS backends. You will shape architecture, mentor engineers, and drive AI/automation initiatives across client engagements. Strong design sense, collaboration and delivery focus are essential. ...

Light & Wonder is seeking a Senior Software Engineer in Manchester to help build a next‐generation, cross‐platform game framework powering experiences across web, mobile, desktop and land‐based gaming platforms. You will design and develop core framework components, influence architecture, and tackle complex performance challenges. ...

Cityscape Recruitment is seeking an experienced Senior Software Engineer to design, build and support internal systems, data platforms and automation solutions that improve operational efficiency. You will work with stakeholders, own features end-to-end from concept to deployment, and help modernise processes using cloud-based solutions ...

Wilsons Auctions is seeking a Senior Software Engineer to own and evolve Gavel, the enterprise auction platform. You will work across Node.js/NestJS backend APIs and React/Next.js front-ends, delivering reliable features and AI-assisted development workflows. Based in regional offices (Belfast, Glasgow, Newcastle ...

tools, and automation frameworks essential for efficiently handling the vast volume of content in our pipeline. About the role We are looking for a Senior Software Engineer to help design and build large-scale video infrastructure powering Live and VOD streaming workflows at Roku. In this role … resilient, cloud-native services that operate continuously at scale, solving complex distributed systems challenges across high-throughput media pipelines. This position requires hands‐on software development, including writing new code and maintaining existing codebases across critical video infrastructure. The ideal candidate brings deep experience in backend systems engineering ...

National Physical Laboratory in Birmingham is seeking a Senior Software Engineer to lead the design and architecture of systems that support security testing. This hands-on role requires expertise that directly impacts national security by ensuring the delivery of secure software. Ideal candidates will possess strong technical ...

Identity’s OneLogin team seeks a Senior Software Engineer who owns design, build, test, deploy and operate responsibilities with a bias for action. You will shape testing strategy and automation, and contribute to AI-augmented development to maximize confidence and release safety at scale. You will work ...

Story Terrace Inc. is seeking a mid-senior software engineer to join our innovative engineering team. You will work on the HelloSelf Companion, an AI-powered mental health product, improving its effectiveness and interactions. With a competitive salary range of £75-85k plus equity, the role ...

based AI scale-up is seeking a Senior Software Engineer with expert-level knowledge of MongoDB. This is a remote opportunity for an initial 6-month contract offering up to £700/day. You'll work autonomously in a collaborative DevOps environment, providing guidance on integrating Django ...

Coder is seeking a Senior Software Engineer on our Engineering team to build the systems behind our agentic development experience. You’ll work across the agent harness, integrations, and workflows that connect agents with real development environments. You’ll stay hands-on, solve complex technical problems ...

Elasticsearch B.V. seeks a Senior Software Engineer for the Integrations Team to build how Elastic appears inside the AI ecosystem. You’ll own backend services, develop the MCP server, and create universal agent skills with tooling and linting. You will work across product and external partners, contributing ...

Clutch Canada is seeking a Senior Software Engineer to join their Core Experiences Team in Reading, England. The role focuses on building and maintaining foundational services and SDKs that enhance the product experience. The ideal candidate should have experience with Kotlin Multiplatform and familiarity with GCP. ...

Clutch Canada is seeking a Senior Software Engineer for its Core Experiences Team. In this role, you will collaborate with product teams to optimize functionality, ship cloud functions, and design APIs that enhance user experience. Ideal candidates will have strong systems thinking and collaboration skills, particularly with ...