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Senior Software Engineer United Kingdom Jobs

158 Job Offers

Senior Software Development Engineer
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Join our Core team as a Senior Java Software Development Engineer. You will build the distributed, low-latency engine at the heart of the Hazelcast Platform. We require strong Java proficiency, experience with complex backend systems, and deep concurrency knowledge. This UK-based role offers exce...
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United Kingdom
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Hazelcast
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Senior Software Engineer C#
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Join a leading hedge fund in London as a Senior C# .NET Engineer. You will design and enhance high-performance, low-latency Order Management Systems (OMS) in a mission-critical trading environment. This hands-on role requires deep C# expertise and collaboration with traders and quants. Enjoy a hi...
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United Kingdom , London
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250000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer
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Join our London team as a Senior Software Engineer. You will lead development on our PHP/Laravel, MySQL, and AWS platform, building scalable RESTful APIs and web apps. We value expertise in modern software engineering, CI/CD, and full-stack performance tuning. Enjoy a collaborative, supportive en...
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United Kingdom , London
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Arrive
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Senior Software Engineer
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Join Twilio's SDK Engineering team in the UK as a Senior Software Engineer. Design and build scalable backend systems and GraphQL layers for Contact Center products using Java/Scala. Champion reliability, mentor peers, and enjoy competitive pay, generous leave, and comprehensive benefits.
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United Kingdom
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Stytch
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Senior Software Engineer II
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Join our London team as a Senior Software Engineer II in Forensic Intelligence. Design and scale global systems for video evidence analysis, working on media pipelines and forensic tools. Leverage 8+ years of experience to mentor engineers and shape technical architecture. Enjoy competitive salar...
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United Kingdom , London
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Axon
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Senior Software Engineer
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Join our team in Belfast as a Senior Software Engineer. You will design and build high-scale distributed systems using Java and microservices for a global platform. This role requires 5+ years of experience, cloud expertise (AWS/Azure/GCP), and offers the chance to mentor engineers and shape tech...
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United Kingdom , Belfast
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Bazaarvoice
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Senior Software Engineer – Backend
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United Kingdom , London
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Orbis Consultants
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Senior Software Engineer (C++)
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Join Blis in Edinburgh as a Senior C++ Software Engineer. Develop ultra-low latency, high-throughput trading systems handling massive data volumes. Leverage your 5+ years of experience in high-performance systems, networking, and concurrency. Enjoy hybrid working, private healthcare, a matched pe...
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United Kingdom , Edinburgh
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Blis
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Senior Software Engineer
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Join Bango in Cambridge as a Senior Software Engineer. Design and deliver scalable, event-driven systems using Kafka and cloud-native technologies. Mentor engineers and champion best practices in a flexible, supportive environment with excellent benefits.
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United Kingdom , Cambridge
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Bango
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Senior Software Engineer
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United Kingdom , London
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85000.00 - 125000.00 GBP / Year
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Omnea
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Team Leader - Senior Software Engineer
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United Kingdom , London
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85000.00 - 125000.00 GBP / Year
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Omnea
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Senior Software Engineer - Data Platform
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United Kingdom , London
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Multiverse
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Senior Software Engineer - Developer Experience
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United Kingdom , London
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Multiverse
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Senior Software Engineer
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United Kingdom , London
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Multiverse
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Senior Software Engineer - AI Adoption Product
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United Kingdom , London
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Multiverse
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Senior Software Engineer, Full Stack - Fintech Airlines
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United Kingdom , London
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Hopper
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Senior Software Engineer - Fulfilment
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United Kingdom , London
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Eucalyptus
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Senior Software Engineer, UI Infrastructure
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United Kingdom , Cambridge
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Roku
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Senior Software Engineer, UI
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United Kingdom , Cambridge
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Roku
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Senior Software Engineer
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United Kingdom; France , London; Paris
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H Company
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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.