12 of 12 Legacy Code Jobs in the UK excluding London

2+. Support and enhance existing systems with a focus on performance, stability, and maintainability. Collaborate with cross-functional teams (Product Owners, QA, DevOps, etc.) to deliver new features. Refactor Legacy code and actively contribute to reducing technical debt. Write clean, well-documented, scalable, and maintainable code. Participate in code reviews and support junior developers where appropriate. Uphold More ❯

and Verification of complex hardware and software test systems. Development of Suppoting Documentation and Validation Evidence. Fault Finding and RCA of issues identified with the developed Test Equipment. Enhancing Legacy code bases with new features. Rapid Protoyping of New Features and Interfaces as per project needs. Qualifications Bachelor's or Master's degree in Computer Science, Software Engineering … Proficient in SysML and UML, and experience in applying model-based approaches to both systems and software engineering challenges. Experience in developing, maintaining and enhancing complex embedded systems, including legacy codebases. An understanding of the full software development lifecycle, combined with expertise in implementation of precise and traceable software amendments. Experience Experience working in the UK Defence industry or More ❯

used globally in critical healthcare diagnostics and treatment. What You’ll Do Lead architecture, design & delivery across two .NET/C# teams Mentor developers and drive process improvements Modernise legacy code and shape long-term technical strategy Collaborate with Sales, QA & end users, with occasional customer site visits What We’re Looking For 5+ years experience with C# More ❯

HUNDREDS of clients globally (and I'm talking about big house-hold names) alongside millions of users! They built the platform from scratch several years ago using absolutely no legacy code and only the very best technology stack and enterprise tools within a true Microservices environment. Data is absolutely at the heart of what they do and with More ❯

Developer you will be responsible for: Building, developing and maintaining C# applications, tools, and APIs to support internal systems and customer-facing platforms. Working with senior developers to understand legacy codebases and to support long-term migration to modern platforms. Participating in the full software development lifecycle (design, development, testing, deployment, and maintenance). Writing clean, maintainable, and well More ❯

Senior Plasma Code Developer Abingdon Rd, Culham, UK Full-time Salary: £56,596 (inclusive of Specialist Allowance) + excellent benefits including outstanding pension Division: Plasma Science and Fusion Operations Site Location: UKAEA Culham, Oxfordshire Confirmed Grade: Level 5 Department: Plasma Physics Compensation: GBP 56,596 - GBP 56,596 yearly Company Description By 2050, the planet could be using twice … source data. The Role Are you looking for an exciting opportunity to make a difference? Join our team and contribute to the future of fusion energy. As Senior Plasma Code Developer,you will be responsible for developing and maintaining plasma core and edge modelling codes and ensuring that UKAEA's plasma modelling capability incorporates state-of-the-art physics … models and features needed to reliably model fusion experiments and concept devices such as MAST-U, JET, STEP, and ITER. Code development will be predominantly focused on the integrated transport modelling suite JINTRAC, including the core transport code JETTO, a multi-fluid code to describe the edge plasma (e.g. EDGE2D or SOLPS), and a kinetic Monte Carlo More ❯

Senior Plasma Code Developer Abingdon Rd, Culham, UK Full-time Salary: £56,596 (inclusive of Specialist Allowance) + excellent benefits including outstanding pension Division: Plasma Science and Fusion Operations Site Location: UKAEA Culham, Oxfordshire Confirmed Grade: Level 5 Department: Plasma Physics Compensation: GBP 56,596 - GBP 56,596 yearly Company Description By 2050, the planet could be using twice … source data. The Role Are you looking for an exciting opportunity to make a difference? Join our team and contribute to the future of fusion energy. As Senior Plasma Code Developer,you will be responsible for developing and maintaining plasma core and edge modelling codes and ensuring that UKAEA's plasma modelling capability incorporates state-of-the-art physics … models and features needed to reliably model fusion experiments and concept devices such as MAST-U, JET, STEP, and ITER. Code development will be predominantly focused on the integrated transport modelling suite JINTRAC, including the core transport code JETTO, a multi-fluid code to describe the edge plasma (e.g. EDGE2D or SOLPS), and a kinetic Monte Carlo More ❯

Senior Plasma Code Developer Abingdon Rd, Culham, UK Full-time Salary: £56,596 (inclusive of Specialist Allowance) + excellent benefits including outstanding pension Division: Plasma Science and Fusion Operations Site Location: UKAEA Culham, Oxfordshire Confirmed Grade: Level 5 Department: Plasma Physics Compensation: GBP 56,596 - GBP 56,596 yearly Company Description By 2050, the planet could be using twice … source data. The Role Are you looking for an exciting opportunity to make a difference? Join our team and contribute to the future of fusion energy. As Senior Plasma Code Developer,you will be responsible for developing and maintaining plasma core and edge modelling codes and ensuring that UKAEA's plasma modelling capability incorporates state-of-the-art physics … models and features needed to reliably model fusion experiments and concept devices such as MAST-U, JET, STEP, and ITER. Code development will be predominantly focused on the integrated transport modelling suite JINTRAC, including the core transport code JETTO, a multi-fluid code to describe the edge plasma (e.g. EDGE2D or SOLPS), and a kinetic Monte Carlo More ❯

and SQL Server Enhancing user experiences with modern JavaScript/TypeScript frameworks Driving product improvements through close collaboration with Product Managers, Designers, and other Engineers Ensuring software quality through code reviews, unit testing, and best development practices Contributing to architectural decisions and mentoring junior developers Supporting DevOps processes and cloud-based deployments (bonus if familiar with Azure) Nice to … Have: Experience with PHP and legacy codebases Previous work in the financial services or SaaS industry What We’re Looking For: Proven experience as a Senior or Lead Developer working with C#/.NET Solid knowledge of SQL Server and performance optimization Proficiency in JavaScript/TypeScript and front-end development Strong problem-solving skills and the ability to More ❯

forefront of digital innovation. About the Company We're a global leader in our sector, trusted by millions worldwide. As part of our ambitious technology transformation, we’re rearchitecting legacy platforms while launching bold new greenfield projects that leverage AI to drive intelligent products and services. This is more than a software engineering role — it's a chance to … be part of a journey that shapes the future of AI in a real-world, high-impact environment. What You’ll Work On Re-architecting legacy systems into scalable, modern cloud-based solutions (Using GCP) Building greenfield applications from the ground up with a strong AI-first mindset Collaborating with data scientists, ML engineers, and product teams to deliver … systems About You Strong experience with C#, Java, or Go A genuine interest in AI/ML (previous experience is a bonus, but not required) Comfortable navigating and improving legacy codebases Eager to work on greenfield projects and adopt new tech Familiar with cloud platforms ( AWS, Azure, or GCP preferred ) Passionate about learning, experimenting, and pushing boundaries Why Join More ❯

built ERP system. Liaise with key internal teams to understand business needs and translate them into robust software solutions. Provide end-user training and technical support. Maintain and improve legacy applications to ensure consistent performance. Write and maintain technical documentation, user manuals, and test cases. Perform thorough testing to identify and resolve software bugs. Skills & Experience: Strong commercial experience … with VB.NET development. Proven ability to maintain and document legacy code. Proficient in Microsoft SQL Server and relational database design. Experience with SAP Crystal Reports. Familiarity with Infragistics Ultimate UI for Windows is a plus. Excellent debugging, troubleshooting, and problem-solving skills Clear communication skills with the ability to liaise across technical and non-technical teams. Knowledge of Software More ❯

built ERP system. Liaise with key internal teams to understand business needs and translate them into robust software solutions. Provide end-user training and technical support. Maintain and improve legacy applications to ensure consistent performance. Write and maintain technical documentation, user manuals, and test cases. Perform thorough testing to identify and resolve software bugs. Skills & Experience: Strong commercial experience … with VB.NET development. Proven ability to maintain and document legacy code. Proficient in Microsoft SQL Server and relational database design. Experience with SAP Crystal Reports. Familiarity with Infragistics Ultimate UI for Windows is a plus. Excellent debugging, troubleshooting, and problem-solving skills Clear communication skills with the ability to liaise across technical and non-technical teams. Knowledge of Software More ❯