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Senior Software Engineer United Kingdom Jobs

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Senior Software Engineer
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Join Perk as a Senior Software Engineer in Edinburgh. Develop our next-gen travel & spend platform using Python/Django and/or React. We seek an expert full-stack developer with a product mindset, passion for quality, and Agile experience. Enjoy competitive pay, equity, private healthcare, and amp...
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United Kingdom , Edinburgh
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Yokoy
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Senior Software Engineer - Desktop
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Join Anaconda's Desktop team as a Senior Software Engineer to redefine tools for data scientists. You'll build a next-gen Electron app with React/TypeScript, integrating Python environments and AI tools. Enjoy a UK remote role with comprehensive benefits and a focus on user-centric development.
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United Kingdom
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Anaconda
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Senior Software Engineer II
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Lead the design and scaling of a planet-scale cloud control plane for global IoT fleets at Axon. This senior role requires 10+ years in distributed systems, deep expertise in Go, Kubernetes, and cloud-native security. Based in London, you'll directly impact public safety while enjoying a competit...
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United Kingdom , London
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Axon
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Senior Software Engineer in Test
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Join Axon's mission to protect life as a Senior SDET in London. You will architect test infrastructure and lead automation for mission-critical, AI-powered public safety platforms. This role requires 7+ years' experience in test automation, proficiency in languages like Python/Java, and expertise...
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United Kingdom , London
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Axon
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Senior Software Engineer – GTM Systems
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Join our London team as a Senior Software Engineer for GTM Systems. You will build scalable tools on Salesforce and Snowflake, using Python, SQL, and Apex. Translate business needs into technical solutions and mentor peers in a fast-growing startup. Enjoy competitive salary, equity, comprehensive...
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United Kingdom , London
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Intercom
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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 Automation Software Engineer
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Lead complex automation solutions for naval combat systems as a Senior Engineer in New Malden. Utilize your C#/PowerShell and VMware expertise to design and maintain critical deployment frameworks. This role offers technical leadership, mentorship, and the chance to shape automation strategy with...
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United Kingdom , New Malden
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37.25 GBP / Hour
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Outsource UK
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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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Orbis Consultants
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Senior Salesforce Software Engineer
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Join Gigaclear as a Senior Salesforce Software Engineer in Abingdon. Transform our Salesforce product using Apex, LWC, and integrations to empower UK communities with fibre broadband. We seek a certified expert with 2-3+ years' hands-on experience in development, APIs, and CI/CD. Enjoy a generous...
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United Kingdom , Abingdon
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360 Resourcing Solutions
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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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100000.00 GBP / Year
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Formula Recruitment
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Senior Software Engineer - Java Full Stack, Futures Engineering
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Lead the development of a Cleared Derivatives back-office system in London. This senior Java Full Stack role requires 7+ years of back-end expertise, financial industry experience, and skills in microservices, Kafka, and Kubernetes. Contribute to ReactJS front-end and enjoy competitive compensati...
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United Kingdom , London
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Clear Street
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Senior Software Engineer
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Join a growing Manchester tech startup as a Senior Software Engineer. Build cloud-native, serverless systems using TypeScript and AWS in a collaborative DevOps environment. Enjoy a hybrid model with 2 days in the office and a 2pm Friday finish. Champion best practices like TDD and pair programmin...
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United Kingdom , Manchester
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50000.00 - 70000.00 GBP / Year
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Morson Talent
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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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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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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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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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Roku
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Senior Software Engineer, Python (Tools Development)
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Join Roku's software automation team in Cambridge as a Senior Python Engineer. Develop and enhance E2E test automation frameworks and web-based tools for embedded devices. Leverage your expertise in Python, React, CI/CD, and cloud technologies. Enjoy comprehensive benefits and support in a dynami...
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United Kingdom , Cambridge
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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 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.

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