21 of 21 Permanent Legacy Code Jobs in the UK excluding London

Junior JavaScript / Node.js Developer

Hiring Organisation
Constant Recruitment Ltd
Location
TN23, Ashford, Kent, United Kingdom
Employment Type
Permanent
Salary
£28000 - £35000/annum
Node.js Developer Location: Ashford Salary: Up to £35k DOE Level: Junior/early-career Do these questions sound like you? Do you enjoy writing code and want to keep getting better at it? Are you interested in cloud computing and AWS, even if you are still early on that … will be supported, trained, and encouraged to grow technically and professionally. What you will be getting involved in Writing and improving JavaScript/Node.js code Contributing to real products and services, not toy projects Working with cloud-hosted applications, with exposure to AWS Learning how applications are deployed, scaled ...

Oracle PL/SQL Developer

Hiring Organisation
Better Days Recruitment Ltd
Location
Horley, Surrey, United Kingdom
Employment Type
Permanent
Salary
£65000 - £68000/annum Great Company benefits
replacing a very experienced member of staff so requires an experienced Oracle PL/SQL Developer at an Enterprise level. Requiring experience of migrating legacy code and designing new code and interfaces. You will be experienced and familiar of concepts and best practices and can look … bigger picture when looking at code and a piece of work. You will be a great problem solver, enjoy working collaboratively but also independently when required and have a high attention to detail, taking pride in your work. The role is based at Head Office with local parking ...

Software Developer (.NET / SQL)

Hiring Organisation
Reality Solutions Ltd
Location
Hull, North Humberside, North East, United Kingdom
Employment Type
Permanent
Salary
£30,000
Implement new features and improve existing functionality Debug, test, and resolve software defects Work with internal stakeholders to understand business requirements Maintain and improve legacy systems while contributing to modernisation efforts Integrate with third-party systems and APIs Contribute to documentation and handover processes Follow version control and release … procedures About you We are looking for a practical problem solver who can work through real business scenarios. You should be comfortable working with legacy code and improving it safely, and a clear communicator with non-technical stakeholders. We value attention to detail, ownership of delivered work ...

NET Developer

Hiring Organisation
Avanti Recruitment
Location
Chigwell, Essex, United Kingdom
Employment Type
Permanent
Salary
£80000 - £120000/annum
platform while actively contributing to its evolution toward modern .NET and Azure technologies. This is not a pure greenfield role. It is not a legacy-only support role. It is a genuine blend of both. The Role You will work on a business-critical lending platform used daily … SOLID principles and TDD Mentoring experience The Ideal Candidate You will thrive here if you: Enjoy working with complex systems Are comfortable maintaining legacy code Are motivated to modernise and improve platforms Communicate clearly and confidently Want long-term impact rather than short-term project work ...

Senior Full Stack Software Engineer

Hiring Organisation
Bolt Technical Limited
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
About the Role Bolt Technical are hiring exclusively for a growing SaaS business. This is a key senior hire to take ownership of a legacy LAMP (Linux, Apache, MySQL, PHP) platform, modernising it pragmatically while supporting a small, fast-moving team. The role offers significant influence over technical direction … long-term path to CTO as the business scales. Key Responsibilities Own and develop a LAMP-based full-stack platform Audit, refactor, and improve legacy code without full rewrites Introduce modern front-end frameworks (React, Vue, Angular) Design and maintain APIs (REST/GraphQL) Improve performance, security ...

Scientific Team Lead

Hiring Organisation
EMBL-EBI
Location
Saffron Walden, Essex, South East, United Kingdom
Employment Type
Permanent, Work From Home
understanding of agile and similar software development processes including how to adapt these methods to maximise success in multi-partner projects Experience maintaining legacy code and systems including migration to new implementations Knowledge of deployment infrastructures including virtual machines, commercial cloud and kubernetes Experience with collaborative development tools … installation grant (as applicable) Campus life: Free shuttle bus to and from work, on-site library, subsidised on-site gym and cafeteria, casual dress code, extensive sports and social club activities (on campus and remotely) Family benefits: On-site nursery, child sick leave, generous parental leave, holiday clubs ...

C# Software Developer Leicester /Hybrid

Hiring Organisation
Akkodis
Location
Leicester, Leicestershire, United Kingdom
Employment Type
Permanent
Salary
£40000 - £50000/annum
Work closely with testers, designers, and project managers to ensure quality work. Process Improvement: Identify areas for improvement in business processes and suggest solutions. Legacy System Modernisation: Upgrade older applications using modern tools like Power Apps, MS Dynamics, and Azure SQL. Documentation: Create clear and detailed technical and functional … build relationships quickly with stakeholders. Strong planning and prioritization skills. Considerate of how your decisions affect others. Technical Skills: Ability to debug and interpret legacy code in Visual Studio.Net, C#, WPF, ASP.Net, REST, SSIS, TSQL, and SPROCs. Experience in migrating legacy systems to modern platforms like Power ...

.NET Developer

Hiring Organisation
Octad Recruitment Consultants (Octad Ltd )
Location
Wickford, Essex, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
help build, modernise, and support business-critical Windows applications for this fantastic Software Consultancy. If you enjoy C#, SQL Server, system integrations, and transforming legacy code into clean, modern.NET solutions, this is a great opportunity to make a real impact. Work with: C#, .NET/.NET Core, WinForms ...

.NET Developer

Hiring Organisation
Octad Recruitment Consultants (Octad Ltd )
Location
Wickford, Essex, United Kingdom
Employment Type
Permanent
Salary
GBP 55,000 Annual
help build, modernise, and support business-critical Windows applications for this fantastic Software Consultancy. If you enjoy C#, SQL Server, system integrations, and transforming legacy code into clean, modern.NET solutions, this is a great opportunity to make a real impact click apply for full job details ...

NetSuite Developer/Administrator

Hiring Organisation
PLANET RECRUITMENT SERVICES LTD
Location
Wantage, Oxfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £72,000 per annum
will need to be in the office twice a week. Key Responsibilities Generation of Suite Scripts to fulfil business requirements Understand, Maintain & Update Legacy Code Ability to accurately document & communicate scripts & workflows NetSuite Report Generation & Modification NetSuite System Updates - including products, classes, customers Ensuring that workflows within NetSuite ...

Applied AI & Automation Engineer - London city - 90k

Hiring Organisation
Akkodis
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
daily Why this role is different Massive autonomy - you're not one of 20 engineers; your work is the work Greenfield build - no legacy code to untangle Direct access to technical leadership Clear, valuable real-world use case Hybrid flexibility after the first month If you enjoy creating ...

NetSuite Developer Administrator

Hiring Organisation
Purdicom
Location
Wantage, Oxfordshire, United Kingdom
Employment Type
Permanent
NetSuite environment, ensuring our data and workflows are as high-performing as our team. Scripting: Generating SuiteScripts to solve business puzzles and maintaining legacy code. Optimisation: Managing system updates (products, classes, customers) and ensuring workflows run like clockwork. Data & Insights: Handling migrations, imports/exports, and building powerful reports ...

Junior Control Systems Engineer

Hiring Organisation
Reevr Talent Ltd
Location
Curborough, Staffordshire, United Kingdom
Employment Type
Permanent
Salary
GBP 30,000 - 40,000 Annual
looking for a Junior Control Systems Engineer to join the team immediately. This is not a maintenance role. This is not just editing legacy code. You ll be developing PLC programs from scratch, contributing to full system design, producing electrical documentation, and supporting complete machine delivery. What ...

COBOL Developer

Hiring Organisation
Heywood
Location
Altrincham, England, United Kingdom
help us deliver for our customers while we modernise our platform. About You Strong COBOL developer who takes pride in producing reliable, maintainable code Good SQL knowledge and comfortable working with data-heavy systems Keen to work in an Agile environment and contribute as part of a Scrum team … Confident working in an existing legacy codebase, but know when to ask for help Interested in modernisation — including the opportunity to transition into Java over time The Role In this role you’ll enhance and maintain our legacy COBOL code that supports key functionality in our Altair ...

Technical Lead

Hiring Organisation
Yorkshire Water
Location
Bradford, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent, Work From Home
Confident writing and optimising SQL queries, scripts and stored procedures. Practical experience with Octopus Deploy, Azure Pipelines and RESTful APIs. Solid understanding of clean code practices, Agile delivery and thorough code review. Able to troubleshoot production issues and improve or refactor legacy codebases. Excellent communicator ...

Embedded Software Engineer

Hiring Organisation
Akkodis
Location
Crawley, England, United Kingdom
designed state machines. 🔥 What You’ll Work On Develop robust embedded software for real‐time and safety-critical environments. Deliver clean, maintainable, fully tested code that meets engineering standards. Debug, optimise, and push performance limits across embedded Linux systems. Follow strong secure coding practices and participate in architecture/… Deep experience with embedded Linux (bonus points for PetaLinux + driver-level work). Strong C++ development skills for embedded targets — including reading & improving legacy code. Ability to capture and manage software requirements (DOORS experience ideal). Experience designing complex embedded architectures + UML proficiency . Solid documentation ...

COBOL Software Engineer

Hiring Organisation
DWP Digital
Location
Sheffield, South Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
guide and develop a team of 5 engineers, drive technical direction across multiple applications and lead the modernisation of some of the most significant legacy services in government. Over time, you'll play a role in helping DWP transition these core systems into Java-based services, giving you continued … resolving complex technical issues that require deep system understanding. We can promise challenge and variety. One day you might be leading technical improvements to legacy codebases; the next, planning infrastructure maintenance, resolving live service challenges, or influencing how we deliver future modernisation programmes. If you enjoy solving complex engineering ...

COBOL Software Engineer

Hiring Organisation
DWP Digital
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
guide and develop a team of 5 engineers, drive technical direction across multiple applications and lead the modernisation of some of the most significant legacy services in government. Over time, you'll play a role in helping DWP transition these core systems into Java-based services, giving you continued … resolving complex technical issues that require deep system understanding. We can promise challenge and variety. One day you might be leading technical improvements to legacy codebases; the next, planning infrastructure maintenance, resolving live service challenges, or influencing how we deliver future modernisation programmes. If you enjoy solving complex engineering ...

COBOL Software Engineer

Hiring Organisation
DWP Digital
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
guide and develop a team of 5 engineers, drive technical direction across multiple applications and lead the modernisation of some of the most significant legacy services in government. Over time, you'll play a role in helping DWP transition these core systems into Java-based services, giving you continued … resolving complex technical issues that require deep system understanding. We can promise challenge and variety. One day you might be leading technical improvements to legacy codebases; the next, planning infrastructure maintenance, resolving live service challenges, or influencing how we deliver future modernisation programmes. If you enjoy solving complex engineering ...

COBOL Software Engineer

Hiring Organisation
DWP Digital
Location
Newcastle Upon Tyne, Tyne and Wear, North East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
guide and develop a team of 5 engineers, drive technical direction across multiple applications and lead the modernisation of some of the most significant legacy services in government. Over time, you'll play a role in helping DWP transition these core systems into Java-based services, giving you continued … resolving complex technical issues that require deep system understanding. We can promise challenge and variety. One day you might be leading technical improvements to legacy codebases; the next, planning infrastructure maintenance, resolving live service challenges, or influencing how we deliver future modernisation programmes. If you enjoy solving complex engineering ...

PHP Developer

Hiring Organisation
The Citation Group
Location
Bracknell, England, United Kingdom
Lead Elite Teams, Shape the Future of HR Tech 🚀 What You'll Do: Design and develop high-performance, scalable PHP applications Modernize and maintain legacy PHP codebases with continuous refactoring approaches Deploy production code with confidence using terraform and GitHub actions Collaborate cross-functionally with engineers, UX designers … GitHub Copilot, Claude, ChatGPT) to accelerate development Exposure to Laravel and an understanding of modern PHP practices Comfortable working with both modern frameworks and legacy codebases Hands-on experience with AWS Solid understanding of software architecture and design patterns Understanding of secure coding practices Experience collaborating in cross-functional ...