1 to 25 of 33 Legacy Code Jobs in the UK

Server-side Engineer

Hiring Organisation
EUROPEAN SOFTWARE SOLUTIONS (UK) LIMITED
Location
Burgess Hill, West Sussex, South East, United Kingdom
Employment Type
Permanent
Salary
£70,000
consumed bymobile apps. Based on experience, this role may be entry level, senior or staff. Relevant experience and skills: Building server-side applications Writing code Refactoring code Deleting code Build tools Continuous Integration Fixing bugs Asynchronous code Performance Analysis and Optimization Legacy Code Unit ...

Consultant Data Engineer IRC302341

Location
United Kingdom
premise Teradata environment to a cutting‐edge AWS “Lakehouse” architecture. In this role, you will focus on building robust data pipelines, modernizing legacy code, and ensuring flawless data delivery. You will work closely with System Analysts, Automation Engineers, and Data Architects to convert hundreds of legacy scripts … read Teradata SQL/BTEQ and write highly optimised Spark/Databricks SQL) and strong Python skills for pipeline development and Airflow DAGs. Legacy Systems: Familiarity with Teradata architecture and utilities (FastExport, BTEQ) to effectively understand the source systems being decommissioned. Experience & Qualifications Experience: 7+ years of dedicated Data ...

Consultant Data Engineer IRC302341

Location
Glasgow, Scotland, United Kingdom
premise Teradata environment to a cutting-edge AWS «Lakehouse» architecture. In this role, you will focus on building robust data pipelines, modernizing legacy code, and ensuring flawless data delivery. You will work closely with System Analysts, Automation Engineers, and Data Architects to convert hundreds of legacy scripts … read Teradata SQL/BTEQ and write highly optimized Spark/Databricks SQL) and strong Python skills for pipeline development and Airflow DAGs. Legacy Systems: Familiarity with Teradata architecture and utilities (FastExport, BTEQ) to effectively understand the source systems being decommissioned. Experience & Qualifications Experience: 7+ years of dedicated Data ...

Senior Software Engineer

Location
City Of London, England, United Kingdom
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 mode with zero downtime to revenue flows. Extract business rules scattered across C#, embedded JavaScript … rules assemblies. Build new services cleanly. with proper Dependency Injection (DI), robust authentication/authorization, structured logging, and full observability. Work fluently across both legacy .NET Framework 4.8 (ASP.NET MVC5, WebAPI 2, EF6) and modern .NET, as both will coexist for the whole transition period. Navigate across the multiple ...

Senior Software Engineer

Hiring Organisation
AMETEK
Location
Leicester, UK
Employment Type
Full-time
development and maintaining of desktop applications and backend services using WPF, C#, .NET Core, following MVVM and other established design patterns. Writing clean, testable code following SOLID principles and best practices. Participating in code reviews, technical discussions and mentoring of junior developers. Working with legacy code ...

High-Integrity Software Engineer

Hiring Organisation
Hackajob Ltd
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
other colleagues at a time. In addition, you'll take an active role in unlocking the potential of junior colleagues: encouraging idiomatic code, demonstrating engineering rigour, and sharing hard-won knowledge with your peers. Youll also help drive our engineering processes to maintain code quality while balancing realistic … timescales and client requirements. Desirable Skills Professional experience in the design and implementation of complex projects, ideally both clean-slate projects and updates to legacy code bases. Comfortable with platform APIs, development environments and native debugging approaches. Experience leading a team of developers through a complete project lifecycle ...

Senior Software Engineer

Hiring Organisation
TripAdvisor
Location
London, UK
Employment Type
Full-time
level business goals into clear technical specifications, often serving as the technical lead for multi-quarter initiatives. Elevate the Team: Set the bar for code quality, lead the adoption of review standards, and mentor junior and mid-level engineers. Master Agentic AI: Use AI tools as a strategic partner … setting the team-wide standards for automation, monitoring, and long-term stability. Optimize Systems: Actively look for opportunities to simplify, consolidate, or retire legacy code to reduce complexity and increase team velocity. Skills & Experience We typically look for 5+ years' experience, following a Bachelor's degree or above ...

Senior Software Engineer, Unified Platform - Trade Management, Trade & Order Processing, Platform Services

Location
Greater London, England, United Kingdom
systems with a constant focus on testing, reliability, scalability, and maintainability. Designing, modeling, and programming in a variety of languages and technologies. Working on legacy code as well as green field development. Initiative driving projects to completion. Learning and promoting new technologies with a focus on best practices. ...

VP, Product & Engineering Coda & FP&A

Hiring Organisation
Unit4
Location
Greater London, United Kingdom
Employment Type
Full Time
slowing the pace of new development. Demonstrable hands-on experience applying AI to software engineering at team scale with measurable results (e.g. AI-driven code modernisation, test generation for legacy code or agentic development workflows) and an informed point of view on how AI will change both ...

VP, Product & Engineering Coda & FP&A

Location
Greater London, England, United Kingdom
slowing the pace of new development. Demonstrable hands-on experience applying AI to software engineering at team scale with measurable results (e.g. AI-driven code modernisation, test generation for legacy code or agentic development workflows) and an informed point of view on how AI will change both ...

Senior Front End Developer - FTC

Hiring Organisation
UKTV
Location
Greater London, United Kingdom
Employment Type
Full Time
bring to the role....key experience, knowledge, skills & personal qualities Key Experience Experience in UI development on a direct-to-consumer product Experience writing code for connected tv applications for partners such as Amazon Fire, Samsung, LG, Freeview Play etc. Strong demonstrable skills of TypeScript and React Proficiency in HTML … integrating 3rd party services and APIs into an existing technology stack Experienced with state management Comfortable writing in cutting edge technologies as well as legacy code Familiarity with design patterns and object-orientated programming Understanding of version control e.g. Git. Understanding of unit testing and/or test ...

Angular Developer (NGRX)

Hiring Organisation
Sanderson Recruitment
Location
South East, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £325 per day + Outside IR35
Angular Developer to join on a specialist basis - someone who can come in and contribute immediately, without needing extensive onboarding or rework of existing code standards. The Role Deep, demonstrable expertise in Angular Solid, practical experience with NGRX is essential Working within a small team where architecture … collaboratively by the lead developer rather than dictated top-down Contributing to a platform that's actively evolving - including some modernisation of legacy code, supported by AI tools to speed up delivery and manage tech debt Writing your own automated tests - there's no dedicated QA function ...

Angular Developer (NGRX)

Hiring Organisation
Sanderson
Location
South East England, United Kingdom
Employment Type
Full-Time
Salary
£300.00 - £325.00 per day
Angular Developer to join on a specialist basis - someone who can come in and contribute immediately, without needing extensive onboarding or rework of existing code standards. The Role Deep, demonstrable expertise in Angular Solid, practical experience with NGRX is essential Working within a small team where architecture … collaboratively by the lead developer rather than dictated top-down Contributing to a platform that's actively evolving - including some modernisation of legacy code, supported by AI tools to speed up delivery and manage tech debt Writing your own automated tests - there's no dedicated QA function ...

Staff Engineer, Test Integration, Modelling and Simulation (R5601)

Location
Greater London, England, United Kingdom
Extensive experience in C++ using modern C++ (C++17/20) while possessing a solid understanding of older standards (C++98/03) for adapting to legacy code and systems seamlessly. Experience in Python. Programming experience in a Linux environment (Windows experience is a bonus). Expertise with Docker ...

Senior Front Office Developer - HFT

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Java, to successfully accomplish development tasks. Conduct thorough testing at the unit, functional, and integration levels to ensure software reliability and performance. Handle both legacy code and new development projects. Promote collaboration and synergy among traders, researchers, and software engineers. Qualifications: Experience in designing, developing, and supporting mission ...

Senior Software Development Engineer

Location
Greater London, England, United Kingdom
Hands on experience with Kotlin for server side, or/and React and Typescript for the frontend. Proven track record of refactoring and modernising legacy codebases and architectures, improving performance and maintainability while minimising risk and customer impact. Track record of integrating and optimizing AI/ML-enabled features ...

Senior Software Engineer, Quant trading - Java

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Java, to successfully accomplish development tasks. Conduct thorough testing at the unit, functional, and integration levels to ensure software reliability and performance. Handle both legacy code and new development projects. Promote collaboration and synergy among traders, researchers, and software engineers. Qualifications: Experience in designing, developing, and supporting mission ...

Full Stack Developer

Hiring Organisation
Typeform
Location
United Kingdom, UK
Employment Type
Full-time
integration of shared tooling and servicesContribute to documentation and developer tooling to improve discoverability and onboardingWork on ongoing platform improvements, including: Migration of legacy code and toolingDocumentation platform enhancementsAutomation improvementsSandbox and developer tooling improvementsParticipate in architecture discussions and contribute practical, scalable engineering solutionsWhat you already bring ...

Senior SAP ABAP Developer/ Engineer - £80K-£120K + Options - UK

Hiring Organisation
KES EU
Location
England, United Kingdom
client has a world-class AI solution for SAP customers looking to modernise their legacy code and optimise business processes. This client has received significant funding and has a great leadership team, putting them in a strong position to realise their ambitious business plans. They require SAP Engineers ...

Android Engineer

Hiring Organisation
EUROPEAN SOFTWARE SOLUTIONS (UK) LIMITED
Location
Burgess Hill, West Sussex, South East, United Kingdom
Employment Type
Permanent
Salary
£70,000
able to dive deep and rapidly iterate on ideas with your team despite some ambiguity. Relevant experience and skills Building Android Applications Writing & Deleting code Build tools like Gradle, GitHub Actions, and Circle CI Continuous Integration patterns Finding and fixing bugs Asynchronous coding patterns Performance Analysis and Optimization Dealing … with legacy code Unit & Integration Tests Open Source Working in a globally distributed team Self-starting and good at time management Integrating with bespoke lovingly hand-crafted backend services from the days of yore. Designing solutions for open ended problems Bachelors degree in Computer Science or related field ...

iOS Engineer

Hiring Organisation
EUROPEAN SOFTWARE SOLUTIONS (UK) LIMITED
Location
Burgess Hill, West Sussex, South East, United Kingdom
Employment Type
Permanent
Salary
£70,000
able to dive deep and rapidly iterate on ideas with your team despite some ambiguity. Relevant experience and skills Building iOS Applications Writing & Deleting code Build tools like Tuist, xcodebuild, GitHub Actions, and Circle CI Continuous Integration patterns Finding and fixing bugs Functional coding patterns Performance Analysis and Optimization … Dealing with Objective-C legacy code Unit & Integration Tests Open Source Working in a globally distributed team Self-starting and good at time management Integrating with bespoke lovingly hand-crafted backend services from the days of yore. Designing solutions for open ended problems Bachelors degree in Computer Science ...

Software Architect [gn] Data Intelligence

Hiring Organisation
Actian
Location
United Kingdom
running if there are issues in production. Making Life Easy for Developers: Create clear APIs, templates, and common tools so internal developers can write code faster and with fewer mistakes. Cloud Cost Control: Monitor and optimize the use of cloud servers and tools (like Kubernetes) to keep the product … cost-effective to run. Improving Legacy Code: Identify parts of the system that have become outdated and plan how to improve them step-by-step without stopping daily work. Technical Guidance & Standards: Review team designs and define the company's technical standards, helping to resolve questions without becoming ...

iOS Engineer

Hiring Organisation
eTeam Workforce Limited
Location
Burgess Hill, Sussex, United Kingdom
Employment Type
Contract
Contract Rate
GBP 305 Daily
able to dive deep and rapidly iterate on ideas with your team despite some ambiguity. Relevant experience and skills: Building iOS Applications Writing & Deleting code Build tools like Tuist, xcodebuild, GitHub Actions, and Circle CI Continuous Integration patterns Finding and fixing bugs Functional coding patterns Performance Analysis and Optimization … Dealing with Objective-C Legacy code Unit & Integration Tests Open Source Working in a globally distributed team Self-starting and good at time management Integrating with bespoke lovingly hand-crafted Back End services from the days of yore. Designing solutions for open ended problems Bachelor's degree ...

NetSuite Developer/Administrator

Hiring Organisation
Buchan and London Recruitment
Location
OX12, Whatscombe, West Berkshire, Berkshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum
join our growing team working on our NetSuite CRM system. Principal Duties: 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 ...

Senior Developer

Hiring Organisation
Think Specialist Recruitment
Location
Watford, Hertfordshire, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £75,000 per annum
applications and RESTful APIs Build and maintain integrations with databases and business systems Develop robust, secure and maintainable solutions Work across both modern and legacy codebases Contribute to the modernisation of the technology estate Develop new internal tools and applications using Microsoft technologies Work with Azure, Power Platform … emerging AI technologies Participate in code reviews, testing and agile delivery Provide technical guidance and support to colleagues Troubleshoot application and integration issues Work closely with technical and non-technical stakeholders to deliver solutions The suitable candidate: 5+ years' professional software development experience Strong C# and .NET experience, including ...