1 to 25 of 63 Legacy Code Jobs in the UK

as its key differentiator they're looking to further grow and diversify their SaaS solutions offering.In this role, you'll take ownership of both new and existing systems, maintaining legacy code where needed while leading the design and development of new solutions. You'll work closely with the Head of Software to align on technical direction, while taking … PHP Developer looking for ownership over development and direction in a role that offers support, progression, and development opportunities. The Role: *Take ownership of new and existing systems, including legacy code, and lead development of a new software suite*Build, maintain, and improve Laravel applications, including APIs and third-party integrations*Make technical decisions to guide the growth More ❯

its key differentiator they're looking to further grow and diversify their SaaS solutions offering. In this role, you'll take ownership of both new and existing systems, maintaining legacy code where needed while leading the design and development of new solutions. You'll work closely with the Head of Software to align on technical direction, while taking … PHP Developer looking for ownership over development and direction in a role that offers support, progression, and development opportunities. The Role: *Take ownership of new and existing systems, including legacy code, and lead development of a new software suite *Build, maintain, and improve Laravel applications, including APIs and third-party integrations *Make technical decisions to guide the growth More ❯

work in Cheshire) Fed up with "agile sprints" where nothing actually ships? Here's something different. Medical device manufacturer needs an embedded firmware engineer who can work with real code, not just talk about it. The work: Life-support equipment. Oxygen systems, breathing devices - stuff that actually matters. You'll be debugging and improving legacy C code … But as long as the projects get completed, the Manager is flexible in terms of where you work. What you get: £70k + benefits. The satisfaction of knowing your code keeps people alive. No corporate buzzword bingo. You'll love this if you: Write solid C for embedded systems and don't need to be told why malloc() is … a bad idea in safety-critical firmware Have 5+ years in a regulated industry - aerospace, automotive, medical, defence Enjoy the detective work of legacy code - understanding why it was built that way, and how to improve it without breaking everything Prefer solving real problems over architectural purity Want to work on medical devices without the bureaucracy of big More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯

a focus on long-term stability and performance. Collaborate with cross-functional teams, including PO, PDEF, QA, DevOps, and product stakeholders, to define, design, and deliver new features. Refactor legacy code and participate in technical debt reduction. Write clean, scalable, and maintainable code with proper documentation. Participate in code reviews and mentor junior developers where applicable. More ❯

a focus on long-term stability and performance. Collaborate with cross-functional teams, including PO, PDEF, QA, DevOps, and product stakeholders, to define, design, and deliver new features. Refactor legacy code and participate in technical debt reduction. Write clean, scalable, and maintainable code with proper documentation. Participate in code reviews and mentor junior developers where applicable. More ❯

a focus on long-term stability and performance. Collaborate with cross-functional teams, including PO, PDEF, QA, DevOps, and product stakeholders, to define, design, and deliver new features. Refactor legacy code and participate in technical debt reduction. Write clean, scalable, and maintainable code with proper documentation. Participate in code reviews and mentor junior developers where applicable. More ❯

Build robust, scalable, and performant tools for pricing, risk, analytics, and trade lifecycle. Collaborate closely with traders, quants, and other technologists to implement front-office solutions. Maintain and optimize legacy code while driving continuous improvements and automation. Contribute to system architecture and participate in code reviews and technical discussions. Deploy and monitor services on Linux environments , ensuring More ❯

hands-on with coding and problem-solving. This is a unique opportunity to work across a modern stack (Java, Spring, Angular, Kafka) and navigate the challenges of evolving a legacy platform into a cloud-native, microservice-oriented future. Key Responsibilities Design, develop, and maintain scalable Java RESTful APIs using the Spring framework. Collaborate with frontend engineers working in Angular … TypeScript to build modern user interfaces. Lead by example with strong, hands-on coding in Java and JavaScript/TypeScript. Maintain, improve, and occasionally dive deep into complex, messy legacy code — making pragmatic decisions about when to refactor, rewrite, or retire. Guide technical decision-making for a complex, evolving architecture — with the opportunity to simplify and shape our More ❯

hands-on with coding and problem-solving. This is a unique opportunity to work across a modern stack (Java, Spring, Angular, Kafka) and navigate the challenges of evolving a legacy platform into a cloud-native, microservice-oriented future. Key Responsibilities Design, develop, and maintain scalable Java RESTful APIs using the Spring framework. Collaborate with frontend engineers working in Angular … TypeScript to build modern user interfaces. Lead by example with strong, hands-on coding in Java and JavaScript/TypeScript. Maintain, improve, and occasionally dive deep into complex, messy legacy code — making pragmatic decisions about when to refactor, rewrite, or retire. Guide technical decision-making for a complex, evolving architecture — with the opportunity to simplify and shape our More ❯

hands-on with coding and problem-solving. This is a unique opportunity to work across a modern stack (Java, Spring, Angular, Kafka) and navigate the challenges of evolving a legacy platform into a cloud-native, microservice-oriented future. Key Responsibilities Design, develop, and maintain scalable Java RESTful APIs using the Spring framework. Collaborate with frontend engineers working in Angular … TypeScript to build modern user interfaces. Lead by example with strong, hands-on coding in Java and JavaScript/TypeScript. Maintain, improve, and occasionally dive deep into complex, messy legacy code — making pragmatic decisions about when to refactor, rewrite, or retire. Guide technical decision-making for a complex, evolving architecture — with the opportunity to simplify and shape our More ❯

React-Admin-based interface. Optimize application performance and user experience across different teams using Fadmin. Work with authentication/authorization mechanisms (e.g., role-based access). Write clean, maintainable code and contribute to internal documentation. Support ongoing improvements to developer experience and internal tooling. 👀Who You Are: Must-haves: Proficiency in React and modern JavaScript/TypeScript. Experience with … React-Admin and Material UI (MUI). Solid understanding of Prisma and relational databases like PostgreSQL. Familiarity with internal tool development and business-focused UIs. Comfort refactoring legacy code and migrating existing queries into structured code. Strong communication skills and a collaborative mindset. Nice-to-haves: Experience with Retool or other low-code internal tooling platforms. Familiarity More ❯

React-Admin-based interface. Optimize application performance and user experience across different teams using Fadmin. Work with authentication/authorization mechanisms (e.g., role-based access). Write clean, maintainable code and contribute to internal documentation. Support ongoing improvements to developer experience and internal tooling. 👀Who You Are: Must-haves: Proficiency in React and modern JavaScript/TypeScript. Experience with … React-Admin and Material UI (MUI). Solid understanding of Prisma and relational databases like PostgreSQL. Familiarity with internal tool development and business-focused UIs. Comfort refactoring legacy code and migrating existing queries into structured code. Strong communication skills and a collaborative mindset. Nice-to-haves: Experience with Retool or other low-code internal tooling platforms. Familiarity More ❯

and surprisingly stable.” Mentor other engineers like a wise coding sensei (but with fewer riddles). Collaborate with product, operations, and data teams without resorting to interpretive dance. Refactor legacy code without crying. Or while crying—we don’t judge. Monitor systems like a hawk with a dashboard. Link engineering strategy to business goals (while avoiding buzzword bingo … You know your way around Git and probably have opinions about commit messages. You’re fluent in Python and don’t break out in hives at the sight of legacy code. You understand the importance of CI, testing, and not YOLOing into production. You’ve worked the full software lifecycle and lived to tell the tale. You can read 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 ❯

sectors and is currently going through a period of national and international growth.In this role, you'll be a senior member of the development team. You'll maintain existing code and lead the design and build of new solutions in PHP. Working with the management team, you'll help shape the product based on client feedback. You'll also … a senior role with real influence, ownership, and the chance to grow as the business continues to expand. The Role *Lead development on both new and existing systems, including legacy code*Build and maintain PHP Laravel applications and improve front-end features*Mentor junior developers and support operations to deliver projects smoothly*Office-based in Blackpool, five days More ❯

CMS governance, analytics setup (GA4, GTM), and integration with Dynamics 365 and Power BI. Own website performance, accessibility, and SEO optimisation. Oversee ongoing maintenance, updates, and documentation to avoid legacy code issues. Skills & Experience Essential Experience leading website redevelopment or CMS migration projects. Knowledge of CMS platforms such as Optimizely, Umbraco, or WordPress. Working knowledge of HTML, CSS More ❯