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Senior Software Engineer United Kingdom Jobs

158 Job Offers

Senior Full Stack Software Engineer
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Join Retail Insight as a Senior Full Stack Engineer in Surrey/London. Design and build scalable analytics platforms using .NET Core, React, and modern databases. Enjoy a hybrid model, 25+ days leave, and strong career development in a collaborative team.
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United Kingdom , Surrey, Greater London
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Retail Insight
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Senior Software Development Engineer
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Join AMD's ROCm team as a Senior Software Engineer to shape the core HIP runtime. You'll design and optimize this key GPU programming environment in modern C++, targeting AI and HPC workloads. This UK-based role requires deep expertise in GPU computing models and low-level systems programming.
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United Kingdom
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AMD
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Senior Software Engineer
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Lead a major engineering transformation in London, moving from manual to AI-augmented SDLC. We seek a hands-on Senior Software Engineer with strong .NET, React, and CI/CD expertise. You'll embed AI tools like Claude, automate workflows, and upskill the team. Drive real change in a modern, automat...
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United Kingdom , London
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Dynamic Search Solutions
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Senior Software Engineer - Build AI Tools
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Join Citi's new GenAI Security team in London as a Senior Software Engineer. Design and build a secure platform to protect AI applications from adversarial attacks using Python/Go. Enjoy a competitive package including bonus, private healthcare, and 27 days annual leave.
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United Kingdom , London
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Citi
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Senior Software Engineer, Roku TV
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Join Roku in Cambridge as a Senior Software Engineer for Regional TV. Develop core software in C++ for European and Australian TV platforms, collaborating with SOC vendors and supporting broadcast certifications. This role offers a chance to grow within a complex embedded systems environment, wit...
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United Kingdom , Cambridge
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Roku
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Senior Software Engineer
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Join Caribou as a Senior Software Engineer in London. Own our full-stack monorepo, using React/TypeScript and Golang to build our tax platform. We seek 5+ years of full-stack experience with cloud services and a drive for architectural excellence. Enjoy competitive salary, EMI options, health ins...
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United Kingdom , London
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80000.00 - 90000.00 GBP / Year
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Helpcare AI
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Senior Full-Stack Software Engineer, (Forward Deployed), GPS
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Join Scale's Global Public Sector team in London as a Senior Full-Stack Engineer. Build impactful AI applications using React, TypeScript, Python, and cloud platforms. Partner directly with clients to deploy and architect scalable, production-grade solutions.
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United Kingdom , London
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Scale
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Senior Software Engineer
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Join a leading hedge fund in London as a Senior C# Engineer. You will design and enhance high-performance, low-latency Order Management Systems (OMS) in a hands-on role. Collaborate directly with traders and quants to deliver bespoke, mission-critical trading solutions. This role requires deep C#...
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United Kingdom , London
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Orbis Consultants
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Senior Java Software Engineer – Core Backend Platform
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Join a remote-first, global team as a Senior Java Software Engineer. You'll build and maintain the core backend platform, focusing on stability and reliability for complex systems. This role requires strong Java fundamentals and a proactive mindset. Enjoy high autonomy in a low-ego, quality-drive...
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United Kingdom , London
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Orbis Consultants
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Senior Software Engineer, Android
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Shape the future of streaming as a Senior Android Engineer in Manchester. Develop the Roku mobile app using Kotlin and Compose to control millions of devices. Leverage modern tech and AI tools to build high-performance, intuitive experiences. Enjoy comprehensive benefits and work with IoT protoco...
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United Kingdom , Manchester
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Roku
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Senior Software Engineer, Android
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Join Roku in Cambridge as a Senior Android Engineer. Shape the future of streaming by building intuitive, high-performance mobile apps to control Roku devices. We seek an expert in Kotlin/Compose, Play Store deployment, and AI tools, with IoT experience a plus. Enjoy comprehensive benefits and wo...
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United Kingdom , Cambridge
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Roku
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Senior Backend Software Engineer
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Join a leading crypto company in London as a Senior Backend Engineer. Design and scale high-performance, event-driven systems for real-time blockchain transactions. Leverage your expertise in distributed systems and Python/C++/Java, with a move to Rust. Build impactful infrastructure in a fast-pa...
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United Kingdom , London
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150000.00 GBP / Year
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Oho Group Ltd
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Senior Software Engineer
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Join our London team as a Senior Software Engineer. Design and scale a high-performance, event-driven backend platform using modern technologies. Leverage your expertise in distributed systems and Python/C++/Java, with an opportunity to transition to Rust. Enjoy a strong engineering culture, lead...
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United Kingdom , London
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150000.00 GBP / Year
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Oho Group Ltd
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Senior Java Software Engineer
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Join a leading bank's multi-year tech transformation as a Senior Java Engineer in London. Design robust microservices and APIs for critical banking platforms using Java, SQL, and Agile practices. This permanent role offers a competitive salary, long-term growth, and real impact in a regulated env...
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United Kingdom , London
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90000.00 - 110000.00 GBP / Year
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Morson Talent
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Senior Software Engineer
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Join a growing SaaS company in Wigan as a Senior Software Engineer. You'll own full-stack development using C#, .NET, and Azure, modernizing microservices with modern architectures. Enjoy hybrid working, private healthcare, and share options in this key role.
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United Kingdom , Wigan
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50000.00 - 60000.00 GBP / Year
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Morson Talent
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Senior Java Software Engineer
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Join a leading global financial services firm as a Senior Java Engineer in London. You will develop and enhance a critical, high-impact enterprise platform using modern Java. This hands-on role involves driving technical strategy, ensuring engineering excellence, and collaborating with senior sta...
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United Kingdom , London
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130000.00 GBP / Year
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Hunter Bond
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Senior Software Engineer, Embedded UI - C++
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Join Roku's DMTE team in Cambridge as a Senior Software Engineer, Embedded UI. You will architect and optimize C++ and BrightScript systems for graphics rendering on a global scale. Tackle performance-critical challenges, integrate AI/ML capabilities, and impact millions of users. We offer compre...
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United Kingdom , Cambridge
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Roku
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Senior Software Engineer
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Join Barclays in Glasgow as a Senior Software Engineer. You will design and develop high-quality, scalable software using modern frameworks like React/Angular and Java/Spring. Collaborate cross-functionally to drive innovation and deliver secure, reliable digital services. Enjoy benefits includin...
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United Kingdom , Glasgow
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Barclays
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Senior Software Engineer - Processing
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Join TxODDS in London as a Senior Software Engineer. Design scalable, high-performance solutions using Scala and Kafka, while championing simplicity and industry best practices. This hands-on role involves mentoring, architectural decisions, and shaping the future with AI-assisted development. En...
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United Kingdom , London
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TXODDS
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Senior Software Engineer - Data Acquisition
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Join TxODDS in London as a Senior Software Engineer for Data Acquisition. Build and maintain high-performance, real-time data pipelines using Python/Java, Kafka, and Kubernetes. You'll ensure data accuracy and reliability for global sports betting technology, working in a collaborative, distribut...
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United Kingdom , London
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TXODDS
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About the Senior Software Engineer role

Senior Software Engineer jobs represent a pivotal career stage where technical expertise converges with leadership and strategic influence. These professionals are the cornerstone of software development teams, responsible for designing, building, and maintaining complex, scalable systems that power modern businesses. Moving beyond foundational coding tasks, senior engineers architect solutions, make critical technology decisions, and mentor others, ensuring both product excellence and team growth.

Typically, individuals in these roles undertake a broad spectrum of responsibilities. They are deeply involved in the full software development lifecycle, from requirement analysis and system design to implementation, testing, deployment, and ongoing optimization. A core duty is architectural design, where they choose appropriate technologies, design patterns, and frameworks to create robust, secure, and scalable applications. This often involves building backend services, APIs (RESTful or GraphQL), and dynamic frontend interfaces. They ensure code quality through rigorous practices like code reviews, writing comprehensive tests (unit, integration), and establishing CI/CD pipelines. Furthermore, senior software engineers frequently collaborate with cross-functional partners, including product managers, designers, and DevOps specialists, to translate business needs into technical specifications and seamless user experiences.

The skill set for these jobs is both deep and wide. Proficiency in one or more core programming languages (such as Python, Java, JavaScript/TypeScript, C#, or Go) is essential, alongside expertise in relevant frameworks and libraries for both frontend (e.g., React, Angular) and backend development. A strong grasp of data structures, algorithms, and system design principles is mandatory. Experience with cloud platforms (AWS, Azure, GCP) and their services for computing, storage, and networking is increasingly standard. Knowledge of database technologies, encompassing both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB) systems, is crucial. Beyond technical acumen, senior roles demand excellent problem-solving abilities to debug complex issues and optimize performance. Soft skills are equally important; effective communication to articulate technical concepts to non-technical stakeholders, project leadership, and the ability to mentor junior developers are key differentiators.

Common requirements for Senior Software Engineer jobs usually include a bachelor’s degree in computer science or a related field, although substantial equivalent experience is often acceptable. Most positions seek candidates with 5+ years of professional software development experience, demonstrating a proven track record of shipping and maintaining production systems. Employers look for individuals who exhibit end-to-end ownership of projects, a passion for continuous learning in a rapidly evolving field, and a strategic mindset focused on long-term maintainability and business impact. For those seeking to lead through technology and drive meaningful innovation, senior software engineer jobs offer a challenging and rewarding career path at the heart of the digital world.