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Senior Software Engineer United Kingdom Jobs

158 Job Offers

Senior Software Engineer
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Join Arrcus as a Senior Software Engineer in the UK. You will qualify key customer deployments, focusing on networking protocols like IPv4/IPv6, MPLS, and EVPN. The role requires strong Python skills, test automation, and experience with Spirent/IXIA equipment. We offer competitive bonus + equity...
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United Kingdom
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125000.00 - 150000.00 USD / Year
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Arrcus
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Senior Software Engineer (Front End)
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Join Matillion in Manchester as a Senior Front End Software Engineer. Utilize your expertise in React, TypeScript, and modern UI architecture to build performant, user-centric applications. You will leverage AI-powered tools, own features through the full SDLC, and enjoy benefits like equity and ...
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United Kingdom , Manchester
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59600.00 - 89400.00 GBP / Year
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Matillion
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Senior Java Software Engineer
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Join a high-profile project as a Senior Java Engineer, focusing on backend systems for complex financial and actuarial data. This contract role requires strong expertise in the Spring ecosystem and AWS with IaC tools like Terraform. Deliver scalable solutions in a regulated UK environment, workin...
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United Kingdom
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Not provided
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Orbis Consultants
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Senior Software Engineer (Blockchain)
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Join a pioneering UK organisation to shape the future of digital finance as a Senior Software Engineer. Develop cutting-edge blockchain solutions using Solidity, TypeScript, and EVM. Build scalable DeFi systems and user interfaces in a fully remote, high-impact role with competitive benefits.
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United Kingdom
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120000.00 GBP / Year
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Formula Recruitment
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Senior Embedded Software Engineer
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Join a scaling Tech for Good company in London as a Senior Embedded Software Engineer. You will design and test firmware for embedded systems, using your 5+ years of C expertise in IoT and wireless communications. This hybrid role offers the chance to work on data-driven, AI-first solutions with ...
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United Kingdom , London
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Salary
100000.00 GBP / Year
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Formula Recruitment
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Senior Software Engineer
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Join a mission-driven team in Manchester as a Senior Software Engineer. Develop scalable, serverless systems using TypeScript, AWS, and Graph databases. Enjoy high autonomy, complex challenges, and benefits including a bonus and hybrid working.
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United Kingdom , Manchester
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Salary
70000.00 - 80000.00 GBP / Year
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Morson Talent
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Senior Software Engineer
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Join Barclays as a Senior Software Engineer in Knutsford/Manchester. Design and develop cutting-edge solutions using Java, Spring Boot, and REST APIs. You will re-architect key systems, lead feature teams, and ensure engineering excellence. We offer private medical care, pension contributions, an...
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United Kingdom , Knutsford; Manchester
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Not provided
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Barclays
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Senior Software Engineer - Python
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Join Admiral Money in Cardiff as a Senior Python Engineer. Champion technical excellence within Agile teams, leveraging AWS, CI/CD, and secure development practices. Enjoy substantial benefits including generous holiday, share schemes, and flexible working while building innovative lending soluti...
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United Kingdom , Cardiff
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Not provided
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Admiral Group Plc
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Senior Software Engineer in Test, Python
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Join our team in Cambridge as a Senior SDET. You will revolutionize testing by architecting intelligent, AI-driven solutions using Python. Leverage predictive analytics and LLMs to prevent regressions and enhance production reliability. Enjoy comprehensive global and local benefits, including hea...
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United Kingdom , Cambridge
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Not provided
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Roku
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Senior Software Engineer
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Join Arqit, a leader in quantum-safe cybersecurity, as a Senior Software Engineer in Belfast. Develop mission-critical, scalable encryption software using Python, with opportunities in Rust and AngularJS. Enjoy a comprehensive benefits package including equity, bonus, and private medical insuranc...
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United Kingdom , Belfast
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Arqit
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Senior Software Engineer
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Join a leading UK software house as a Senior Software Engineer. Develop innovative, global greenfield solutions using Java, Spring, and cloud tech. Enjoy a hybrid role with a bonus, shares, and a strong wellbeing package. Lead on AI-driven projects in a collaborative R&D environment.
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United Kingdom
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100000.00 - 120000.00 GBP / Year
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SF Technology Solutions
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Senior Software Engineer – Enterprise Platform
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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...
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United Kingdom , London
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Not provided
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Salt
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Senior Software Engineer
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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.
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United Kingdom , London
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Salary
80000.00 GBP / Year
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Formula Recruitment
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Senior Software Engineer
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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...
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United Kingdom , London
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60000.00 - 120000.00 GBP / Year
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Oho Group Ltd
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Senior Principal Software Engineer
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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...
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United Kingdom , Belfast
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Not provided
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Rapid7
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Senior Software Engineer in Quality Engineering
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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.
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United Kingdom , London
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Not provided
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Sotheby's
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Senior Software Engineer – Backend
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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...
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United Kingdom , London
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Not provided
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Orbis Consultants
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Senior Software Engineer
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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...
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Location
United Kingdom , London
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Salary
60000.00 - 120000.00 GBP / Year
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Oho Group Ltd
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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.