526 to 550 of 1,330 Permanent Senior Software Engineer Jobs

Senior Software Engineer

Location
Manchester, England, United Kingdom
havean exciting opportunity for a Senior Software Engineer to join the Operational and Regulatory Technology department for an award-winning investment platform, offering a collaborative team working environment, training and excellent career progression. Our strategy is to have a cross functional development team, with team members working ...

Senior Software Engineer

Hiring Organisation
Elsevier
Location
London, UK
Employment Type
Full-time
passionate about building high-quality software solutions that solve complex customer challenges? Do you enjoy mentoring others, driving technical excellence, and collaborating across teams to deliver impactful products? About our TeamOur team is a Shared Services team that provides API Platform capabilities to all of Elsevier. API teams … Gateways, enabling API teams to onboard MCP servers and tools, manage credentials for these resources, and track usage through dashboards. About the RoleAs a Senior Software Engineer you are expected to participate in technical discussions to come up with a design to meet Product Requirements, develop test ...

Senior Software Engineer (LLM Engineering), London London

Location
Greater London, England, United Kingdom
Senior Software Engineer (LLM Engineering), London London Isomorphic Labs is applying frontier AI to help unlock deeper scientific insights, faster breakthroughs, and life-changing medicines with an ambition to solve all disease. The future is coming. A future enabled and enriched by the incredible power of machine … translate scientific needs into technical AI specifications. Partner with other parts of the business to unlock LLM-based use-cases. Skills and qualifications Software Engineering: Strong coding skills (Python) with a focus on production-grade, maintainable systems. System Design: Ability to architect and maintain (IaC) complex systems across multiple ...

Senior Software Engineer - AI Training (Remote)

Location
Manchester, England, United Kingdom
Andrews Recruitment Group is seeking a Senior Software Engineer for AI training projects on a remote, part-time basis. The role focuses on real software engineering challenges, including feature implementation, refactoring, performance tuning, and code review across multiple repositories. Ideal candidates have strong software engineering ...

Remote Senior Software Engineer – AI Training Projects

Location
Greater London, England, United Kingdom
Andrews Recruitment Group is seeking a Senior Software Engineer to support AI training projects on a fully remote, part-time basis. The role focuses on delivering software features, improving code quality, and optimizing performance across multiple repositories. You will work on backend and full-stack tasks ...

Senior Software Engineer — Hybrid & Impactful Security Tech

Location
Cheltenham, England, United Kingdom
GCHQ is seeking a Senior Software Engineer in Cheltenham/Manchester who will drive architecture and design of mission-critical systems, delivering high-quality software and promoting best practices across teams. You will work with C++, Golang, Python, Rust and cloud platforms AWS/Azure/ ...

Senior Software Engineer – Margin Technology - Assistant Vice President

Hiring Organisation
Citigroup
Location
London, England, United Kingdom
integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise. Role Overview/What will you do: As Senior Software Engineer in our global technology team, you will be working with a group of passionate engineers who build technical solutions … complex business problems. You will have an opportunity to participate in the whole spectrum of building a software solution, closely working with product teams and users. We expect you to contribute to our vision of building a strong engineering culture within our global teams. This role is for someone ...

Senior Software Engineer — Shape the Art World Platform

Location
United Kingdom
Artlogic Media Limited in London is seeking a Senior Software Engineer to build and enhance Artlogic’s software platform, delivering high-quality, scalable solutions and contributing to engineering decisions and best practices. You will help advance product development across the stack, mentor teammates, and ensure robust ...

Senior Software Engineer II — Scalable, Secure Systems

Location
Richmond, England, United Kingdom
Global is seeking a Senior Software Engineer II to design, build and operate secure, scalable software across our global platforms. You will own complex technical challenges, collaborating with engineering, product and business stakeholders to drive measurable outcomes. You will design, implement and maintain services, contribute ...

Senior Software Engineer - Stock Platform & Online Growth

Location
City of Westminster, England, United Kingdom
Marks & Spencer is seeking a Senior Software Engineer to lead the modernisation of our order management software within the Stock Domain. You will design scalable data services, own features end-to-end, and shape platform APIs for reliable stock visibility and customer experiences. You will collaborate ...

Senior Software Engineer — Cross-Platform Security Leader

Location
Greater London, England, United Kingdom
Everfox is seeking a Senior Software Engineer to support our London team. You will split time between hands-on work on cross-platform desktop and mobile apps and managing delivery across the end-point software layer of the Hardsec product line. You will shape and deliver … point software for secure browsing and VDI access, owning design, development and user experience. Role includes Linux/Windows desktop and Android/iOS work, with emphasis on quality and enterprise integration. #J-18808-Ljbffr ...

Senior Software Engineer August 6, 2026

Location
Glasgow, Scotland, United Kingdom
Location: Glasgow Workstyle: Hybrid Reports to : VP Software Engineering We're open on level for the right person, this role can be scoped at Staff for a candidate with deeper platform ownership experience. About Chemify Chemify is revolutionising chemistry. We are creating a future where the synthesis of previously … trusted answer for its properties and hazards, one record of what was actually made and shipped to clients. We're looking for a Senior Software Engineer to own crucial parts of that platform. This is a genuinely full-stack role: you'll own applications ...

Senior Software Engineer - Remote AI Training Projects

Location
Birmingham, England, United Kingdom
Andrews Recruitment Group is seeking a Senior Software Engineer to support AI training projects. The role focuses on real software engineering problems, including feature implementation, refactoring, performance improvements, code review, and task/solution creation across multiple repositories. This is a fully remote contractor position with … about 15 hours per week and flexible days. Opportunities vary by project, with rates ranging from $30 to $150 per hour, and highly specialized senior work #J-18808-Ljbffr ...

Senior Embedded Software Engineer

Hiring Organisation
KO2 Embedded Recruitment Solutions LTD
Location
Barnsley, South Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£70,000
Senior Embedded Software Engineer - Modern C++/Embedded Linux Barnsley, South Yorkshire Up to £70,000 + benefits | Relocation assistance available Do you write modern C++ every day, but still understand what's happening on the hardware underneath? This is a senior role in a small … house R&D team. It develops connected embedded devices across several projects at once, from initial requirements through to products in volume production. The software team is small, so you'll have real ownership, your work will be visible and you'll have a direct say in technical direction. ...

Senior Software Engineer - Cloud, AI & Legacy Modernization

Location
Abingdon, England, United Kingdom
Halliburton is seeking a Senior Software Engineer to design, develop, and modernize high-performance desktop and cloud applications in a hands-on role at Milton Park, Abingdon, UK. You will own the technical direction, write code daily, review PRs, and drive architecture decisions with the Team Lead … Product Owner. The ideal candidate has 5+ years in production software, strong C#/.NET and C/C++ skills, cloud experience (AWS/Azure/GC), and hands-on CI/CD. #J-18808-Ljbffr ...

Senior Software Engineer

Location
City Of London, England, United Kingdom
Impact and Responsibilities We are seeking a Senior Software Engineer who thrives on untangling complex systems and modernising core infrastructure without breaking production. This is an exciting opportunity to modernise core C#/SQL systems! Extract legacy business logic, build clean services, and verify changes in shadow … Server stored procedures and backend logic with total precision ensuring client-money correctness is never compromised. What we're looking for in you Senior-level, hands-on experience in modern .NET (.NET 6+) paired with deep, comfortable familiarity with legacy .NET Framework 4.8 (ASP.NET MVC 5, WebAPI 2, Entity ...

Senior Software Engineer — AI Training (Remote)

Location
Glasgow, Scotland, United Kingdom
Andrews Recruitment Group is seeking a Senior Software Engineer to support AI training projects in a fully remote capacity. You will work on real software engineering problems, including implementing features, refactoring, performance optimisation, code review and validating solutions. Experience across backend and full-stack engineering, systems ...

Senior Software Engineer - Fintech (.NET/C#, Azure)

Location
Hereford, England, United Kingdom
allpay Limited is seeking a Senior Software Engineer to join our Research and Development team on a fixed-term basis. You will contribute to requirements gathering, design software solutions, and participate in Agile ceremonies to ensure timely delivery. The role emphasizes collaboration, mentoring of junior developers ...

Senior Software Engineer - Python/C# for Cloud Integration

Location
Belfast City District, Northern Ireland, United Kingdom
Proofpoint is seeking a Senior Software Engineer to join the XFI team within the Cloud Integration Group. You’ll help integrate threat defence software with major email platforms, scale services, and advance with Microsoft and Google integrations. You’ll work in a fast-paced, security‐conscious ...

Senior Software Engineer - Remote/Hybrid, Warehouse Systems

Location
Redditch, England, United Kingdom
Swisslog is seeking a Senior Software Engineer to join our Redditch head office, with the flexibility for hybrid or remote work. You will work on an advanced warehouse management system, designing and developing software for manual and automated warehousing operations, adhering to Swisslog standards and processes. … role requires five years of real-time software development experience, strong Oracle DB administration knowledge, and hands-on PL/SQL/Forms & Reports with Java. #J-18808-Ljbffr ...

Senior Software Engineer, Portfolio Management Capabilitities

Location
Greater London, England, United Kingdom
want to build the tools that help shape investment decisions? The Front Office Investments Technology team at T. Rowe Price is looking for a Senior Software Engineer to help deliver the next generation of cloud-native applications used by investors. You'll join the Portfolio Management Capabilities … user interfaces, scalable cloud services, quantitative analytics and emerging AI‐powered workflows. What You’ll Be Responsible For Designing, building, testing, deploying and supporting software across the full development lifecycle. Developing front‐end applications using TypeScript, React and Redux. Building back‐end services using Java, Node.js and REST APIs. ...

Senior Software Engineer — Zero-Commission Trading

Location
Greater London, England, United Kingdom
Investa is hiring a Senior Software Engineer in London, hybrid (3 days in office per week). You will join the founding engineering team to design, build, and scale the FCA-regulated trading platform with robust, secure services and high availability. You should bring 5+ years … software engineering, proficiency in Python/TypeScript/Java/Go and experience with cloud platforms (AWS/Azure/GCP). You will shape architecture and contribute to a fast-paced, collaborative culture. #J-18808-Ljbffr ...

Senior Software Engineer – Ada/C++ for Radar Systems (Edinburgh)

Location
City of Edinburgh, Scotland, United Kingdom
Leonardo UK in Edinburgh is seeking a Senior Software Engineer to contribute to the Eurofighter Typhoon Radar software. You will work with Ada, C++, and Python on-site in our Edinburgh office, participating in the full Software Development Life Cycle, documenting work, and reporting progress … your supervisor. Collaboration with the Software & Systems teams and other disciplines will be essential. The role focuses on delivering robust, well-documented code and solving complex technical #J-18808-Ljbffr ...

Senior Software Engineer - Remote (UK) for Client Systems

Location
United Kingdom
BYTELAB is seeking a Senior software engineer to build and fix production systems for a range of clients. You’ll work across Python, Java, C#, TypeScript, Go, Rust and C++, joining delivery teams to deliver meaningful software into production. You’ll collaborate closely with client engineers ...

Senior Software Engineer - Java & Python, AI for Docs

Location
Oxford, England, United Kingdom
Elsevier is seeking a Senior Software Engineer I (Java & Python) to help build the Document Intelligence capabilities powering the Submission and Editorial platform. You will design and deploy cloud-hosted services that transform unstructured manuscripts into structured data, enabling AI-driven features across the Submission portfolio. … will work at the intersection of software engineering, data engineering, and AI, leveraging AWS, microservices, and modern tooling to deliver scalable, #J-18808-Ljbffr ...