26 to 35 of 35 Legacy Code Jobs in the UK

Senior Data Engineer

Hiring Organisation
Rullion Limited
Location
Nottingham, Nottinghamshire, East Midlands, United Kingdom
Employment Type
Contract, Work From Home
including transforming data into useful formats. Understand data storage concepts and logical data structures, such as data warehousing. Able to write repeatable, production-quality code for data pipelines, utilizing templating and parameterization where needed. Can make data pipeline design recommendations based on business requirements. Experience with data migration … goals and take initiative. Driven to troubleshoot, deconstruct problems, and build effective solutions. Experience of Git/Version control Experience working with larger, legacy codebases Understanding of unit and integration testing Understanding and experience with CI/CD and general software development best practices A strong attention to detail ...

Principal/Senior Embedded Software Engineer

Hiring Organisation
Verso Recruitment Group
Location
Cambridge, England, United Kingdom
robust performance. This role combines hands‐on embedded development with technical leadership, making it perfect for someone who wants to stay close to the code while influencing broader engineering outcomes. Key Responsibilities - Lead the design, development, and maintenance of embedded software in C - Drive technical direction across new projects … updates to existing designs - Conduct and oversee code reviews, ensuring high standards and best practices - Mentor and support junior and mid‐level engineers - Collaborate with hardware, firmware, systems, and product teams to align requirements and resolve issues - Ensure effective use of Git workflows and version control processes - Provide technical ...

.NET Developer (Full Stack)

Hiring Organisation
Pharmica
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £60,000 per annum
C# and .NET 10+ (Minimal APIs, Blazor) Modern frontend: Svelte, Solid, HTMX, Astro, Tailwind CSS MSSQL Server AWS services (S3, CloudFront, Lambda, CloudWatch, WAF) Legacy codebase (VB.NET, .NET Framework 4.8.1, WebForms). We're migrating away and should be done within 12 months, but you'll need to work … it. We want someone who keeps up with the industry, gets excited by new tech, but also isn't afraid to dig into a legacy VB.NET codebase and figure out how to migrate it properly. If you spend your free time tinkering with side projects or reading about ...

Full Stack PHP/Angular Developer

Hiring Organisation
Career Poster
Location
Penrith, Cumbria, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
will the role involve? As a Full Stack Developer, youll be: Developing new features across our Laravel and Angular applications Supporting the modernisation of legacy systems as part of our platform evolution Building APIs and integrations that connect farm data to actionable insights Contributing to architecture discussions and technical … decision-making Collaborating with the team on code reviews, knowledge sharing and continuous improvement Working across multiple products, from our flagship FarmMetrics platform to client-specific solutions What skills are we after? Were looking for a developer with a proven track record of delivering web applications. To be successful ...

Principal Embedded Software Engineer - C

Hiring Organisation
Verso Recruitment Group
Location
Cambridge, Cambourne, Cambridgeshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum
robust performance. This role combines hands‑on embedded development with technical leadership, making it perfect for someone who wants to stay close to the code while influencing broader engineering outcomes. Key Responsibilities - Lead the design, development, and maintenance of embedded software in C - Drive technical direction across new projects … updates to existing designs - Conduct and oversee code reviews, ensuring high standards and best practices - Mentor and support junior and mid‑level engineers - Collaborate with hardware, firmware, systems, and product teams to align requirements and resolve issues - Ensure effective use of Git workflows and version control processes - Provide technical ...

C# .NET Core Developer - Hybrid - Banking

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £415/day Inside IR35
stack (.NET Framework/.NET Core, HTML/CSS/TypeScript/React, Python, SQL Server, Oracle). The role focuses on refactoring legacy systems to reduce technical debt, improve reliability and performance, and embed modern security patterns across the service estate. Tasks Design, build, and maintain server-side …/TypeScript, Python, and relational databases (SQL Server, Oracle); contribute to API and UI development, data access layers, and integration points. Refactor and modernise legacy codebases: modularisation, dependency updates, performance tuning, improved observability, and raising automated test coverage within CI/CD. Embed modern security patterns and controls across ...

Software Engineer

Hiring Organisation
Uniting Ambition
Location
Manchester, United Kingdom
Employment Type
Permanent
Salary
£40000 - £55000/annum Bonus, 7% pension and up to 35 days
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 … 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 ...

Backend Software Engineer

Hiring Organisation
Reed
Location
Southend-on-Sea, Essex, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £50,000 per annum, Inc benefits
business changes across multiple functions and departments. Day-to-day of the role: Develop, maintain, and refactor backend systems using VB .NET across both legacy and modern environments. Create server-side web applications in ASP.NET, handling routing, middleware, and backend logic. Design and maintain SQL databases, performing optimized CRUD … GitHub or Azure DevOps. Exposure to AI and automation technologies, with experience in integrating AI APIs or automation frameworks. Ability to navigate and improve legacy codebases. Strong documentation practices and effective communication skills. ...

PHP Developer

Hiring Organisation
Nigel Wright Group
Location
Hebburn, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£28,000 - £35,000 per annum
join their development team. This is a fantastic opportunity for someone who enjoys a mix of modern development work and meaningful improvement of legacy systems. The role is hybrid, requiring 2–3 days per week in the Gateshead office, so applicants must be within a commutable distance. Role Withing … will be involved in: Building and improving core application features, including implementing a full search capability to enhance efficiency and data accessibility. Modernising legacy workflows by replacing old PHP-based email processes with API-driven systems, working closely with C# to enhance and develop backend endpoints. Tackling technical debt ...

Oracle Batch Developer

Hiring Organisation
KBC Technologies UK LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
supporting batch processes and high-volume OLTP systems in either Oracle custom or Oracle Apps EBS. Strong analytical skills required - including analysis of legacy codeset, working within a multi-disciplinary teams to impact requirements, input into solutioning process to drive out technical options, hands-on prototyping of potential solution … approaches. Capability to produce robust, highly performant code, experience of and capability with performance testing in a high-volume environments. ...