1 to 25 of 53 Legacy Code Jobs in England

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 ...

Gradle. (2) Java with Kotlin Backend developer with strong Java and kotlin (3) iOS Engineer 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 Bachelor’s degree in Computer ...

operations – a mature, revenue-generating system that has evolved over years and continues to scale. If you enjoy owning real systems, thinking architecturally, improving legacy code thoughtfully rather than rewriting it, and being trusted to deliver without heavy supervision, this role will feel unusually well-matched. The role … calm, root‐cause mindset Incrementally improving system architecture using sound design principles (including modular design, DDD‐style thinking, and pragmatic architectural patterns) Reviewing code, raising standards constructively, and contributing to a disciplined engineering culture Leveraging modern tooling (including AI‐assisted development) to improve quality and velocity This ...

Keynotes. Kotlin & Jetpack Compose first approach. Over 10M+ downloads. The codebase uses modern Android Jetpack components, Kotlin Coroutines, Flow/StateFlow, and RxJava in legacy areas. Make an impact on millions of customers. Never ending chance of experimenting with latest tech, including KMM, Jetpack Compose and more! We have … extremely comfortable with Kotlin. You know reactive programming techniques. You can contribute to discussions on technical architecture and design. You believe that all code is legacy code if it isn't unit/UI tested. You love agile/scrum and can work as part ...

active, hands-on Software Engineer role that combines core web development execution with dedicated delivery coordination. While primarily an engineering role writing code and addressing backlog requirements, this position carries a specialist focus: directly assisting the Engineering Manager in driving flow, managing Jira Kanban boards, and maintaining strict release … ensure pre-production operational quality, and orchestrate smooth production releases. Key Responsibilities Core Engineering Responsibilities Active Codebase Contribution: Actively write clean, secure, and performant code in PHP and/or Python to deliver work from the backlog, including feature development, bug fixes, and critical technical debt. Full-Lifecycle Ownership ...

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 ...

technologies to improve the capabilities of Risk Management. Key responsibilities: Extending Credit Risk pricing calculators to support additional products and scenarios. Upgrading the legacy codebase to .NET Core. Undertaking performance tuning of existing applications and services. Performing rigorous testing of the codebase, including unit and integration testing. Supporting ...

codebase gets easier for both humans and AI tooling to work in. Improve how the codebase is documented and structured so AI code assistants can be guided effectively, for example context files, architecture notes and structured inline documentation. Convert product specifications into precise engineering specifications, building in enough specificity … context that a code assistant can deliver efficiently and reliably, with minimal iteration, rather than being nudged repeatedly toward a solution. Use proofs of concept to prove out the right level of specification and methodology, so AI-assisted changes land reliably and with confidence. Deliver across a full SDLC ...

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 ...

between ship and shore), Fastnet (packet transport and bandwidth management) and Deploy (software updates to vessel endpoints) — all C#, .NET and AWS. Beyond writing code, you'll hold pull request authority over other developers' work, own the weekly production release builds across the product estate, and carry the security … cases, and rollback path included. Act as a Change Authority: review and authorize pull requests from other developers as if you'd written the code yourself, including running it locally. Produce the weekly production release builds and verify rollback before every release. Fix the security findings that come ...

development team to maintain and update the bespoke ecommerce platform, taking a proactive approach in evolving the back-end technology stack and migrating legacy code across to an ASP.NET framework. Advocate integration of technologies and development methodologies to help drive the business forward and ensure a robust, scalable … Manager to maintain and update the bespoke Classic ASP ecommerce platform. Develop new features for a localized ASP.NET MVC 5 platform and contribute migrating legacy features over to this new platform. Write maintainable, scalable, fault-tolerant code, utilizing SOLID principles and OO design/architectural patterns, TDD, etc. ...

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 ...

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 ...

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 ...

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. ...

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 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 ...

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 ...

search of open source data. The Role The UNIX Solaris Systems Specialist provides specialist technical direction and assurance for Solaris platforms, ensuring that legacy systems and applications are operated in a secure, stable, and risk-managed manner while supporting UKAEA’s ongoing scientific and operational requirements. Operating with … high degree of professional autonomy, the role exercises judgement over complex and sometimes ambiguous technical challenges inherent in maintaining and evolving legacy platforms. This includes balancing operational continuity, technical debt, and transition priorities. The role combines Solaris administration with maintenance and evolution of existing applications. It exists to sustain ...

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 ...

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 ...

delivering great tools with great usability Can work well in a cooperative team environment and has experience dealing with large and/or legacy code bases Ability to work in an agile, cross-functional environment Be able to lead and mentor a team of programmers of various levels ...

engineering role for someone who enjoys solving technically challenging problems. You’ll spend most of your time developing new functionality, alongside targeted work on legacy code, debugging complex issues and continuously improving the quality and maintainability of our software. You’ll collaborate closely with other engineers and internal … design through implementation, testing and delivery. Debug complex issues across development and production environments, driving problems through to resolution. Evolve, maintain and improve existing code, balancing new feature development with targeted brownfield and legacy work. Design and evaluate technical approaches, clearly articulating trade-offs around performance, complexity, maintainability ...

lean heavily into AI‐driven development. Using Goldman Sachs' AI tooling and agentic coding assistants, you will govern multiple AI agents, rapidly comprehend large legacy codebases, generate and assess production‐quality code, and accelerate every phase of the software development lifecycle. Your Impact Drive a strategic transformation : Work … centric, AI‐driven world, and define and deliver the requirements for CTL integration. Multiply your output with AI : Orchestrate AI coding agents (e.g., Claude Code, GitHub Copilot, Devin, Gemini Code Assist) across all stages of the SDLC while maintaining mastery, quality, and production fitness over all AI‐generated ...

FPGA Engineer or Senor FPGA Engineer level, depending on the strength of your skills, experience and qualifications. Key Responsibilities: Develop, maintain, and debug HDL code for Xilinx FPGAs in Vivado, implementing full-cycle firmware for Diamond magnet power supplies, including feedback control, filtering, and interlock handling using state machines. … with hardware engineers and the Control Group to optimise performance, resolve issues, and develop reliable Ethernet-based control interfaces. Review, refactor, and document HDL code in line with Diamond standards, ensuring proper version control and maintainability. Contribute to electronic circuit design, simulation (SPICE, MATLAB), PCB design, and prototype testing ...