Software Engineer / Senior Software Engineer United Kingdom Jobs

Join a fast-growing scale-up in Leeds as a Senior Full Stack Engineer. Develop flagship and new AI-driven products using React, Python, and GCP. Own features end-to-end in a cloud-native environment, shaping architecture and best practices. Enjoy a collaborative culture with a 15% performance bonus.

Join Pynea as a Senior Software Engineer in London. Design and build secure, scalable enterprise workflows using TypeScript, GraphQL, and PostgreSQL. Leverage your AWS/GCP expertise to develop high-concurrency systems and ensure reliability. This contract role requires a self-directed professiona...

Join a London-based startup revolutionizing sports data with real-time platforms. As a Senior Software Engineer, you'll design high-performance Go APIs and data pipelines. This remote/hybrid role offers equity, professional growth, and a collaborative, innovative environment.

Join a world-class cybersecurity startup in London as a Senior Software Engineer. Shape architecture and drive technical decisions for a critical, high-impact product. Requires 5+ years' experience with Python, Java, C#, Rust, or Go, and a passion for building secure, scalable systems. Enjoy comp...

Lead architectural development for cybersecurity products as a Senior Principal Software Engineer at Rapid7 in Belfast. This role requires 12+ years of Java experience and expertise in designing complex, scalable enterprise software. You will drive technical strategy, foster innovation, and champ...

Lead quality engineering for microservices in London. Design and drive automation strategy for GraphQL/REST APIs using TypeScript/Go. Build CI/CD pipelines and shape quality culture in this greenfield role.

Join a global payments leader in London, building resilient, event-driven backend systems at scale. We seek a Senior Java Engineer with deep distributed systems and cloud-native expertise. You'll design critical services for real-time financial flows, ensuring high performance and reliability. En...

Join a world-class cybersecurity startup in London as a Senior Software Engineer. Shape architecture and drive technical decisions for a critical, high-impact product. Requires 5+ years' experience with Python, Java, C#, Rust, or Go, building scalable systems. Enjoy real ownership, competitive pa...

Join our In-Car Payments Engineering team in London as a Senior Software Engineer. You will build secure, cloud-based transaction systems using TypeScript, Node.js, and AWS serverless technologies. This role requires PCI DSS expertise to develop and maintain our cutting-edge payment infrastructur...

Join NMI as a Senior Software Engineer in our Payments Processing group. Develop secure, scalable SDKs and backend services for payment device integrations using C#/Java. Enjoy a remote-first UK role with a bonus, private medical insurance, and a strong focus on PCI compliance and agile methodolo...