8 of 8 Legacy Code Jobs in London

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 ...

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 ...

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 ...

Kubernetes and Amazon EKS, including debugging pod, container and networking issues ideally. Comfort balancing feature delivery with live system support and working across both legacy codebases and greenfield development. Why you'll love this job Work on a platform that powers billions of mission-critical customer conversations for major ...

London team, working directly with the CTO and collaborating with colleagues in New York. This isn't a role where you'll be maintaining legacy code. You'll have real ownership over technical decisions and direct impact on the product from day one. The work spans backend services powering ...

joining a trading firm that is actively overhauling its execution systems with modern technologies. That means you are not here to maintain legacy code and hope for the best. You are here to build, shape, and leave a real mark on the architecture that drives the business. … structure is flat. The CEO walks the floor. You are not buried in a hierarchy waiting for sign-off from someone who stopped writing code a decade ago. Your work has visibility from day one. And while you are absolutely in the trading space, it does not feel like ...

will have real ownership, real influence on architecture and direction, and the opportunity to rebuild and redesign systems end to end rather than maintaining legacy code. What you will be working on Designing and building high performance C++ systems that sit directly in the live trading path Optimising latency ...

configuration). Contribute to the end-to-end delivery of a bespoke research and risk assessment tool built in Dynamics. Write, review, and validate code written in C#, ensuring alignment with development standards and governance. Work across both project delivery and BAU, including backlog ownership and triage support. Collaborate … software development, with strong exposure to Microsoft Dynamics and Power Platform. A solid development background in C# .Net, with the ability to understand legacy code. Experience delivering custom Dynamics solutions (not just configuration/customisation). Understanding of Power Platform (Power Apps, Power Automate, etc.) Experience working in project ...