26 to 29 of 29 Legacy Code Jobs in London

observability Improve platform reliability - implement monitoring, alerting, and performance optimizations for production AI systems Mentor and uplift junior and mid-level engineers through code reviews, pairing, and technical guidance Shape engineering practices - contribute to architecture decisions, coding standards, and team processes Collaborate cross-functionally with Product, Design, Compliance … applications with good state management, performance, and testing Strong Python backend experience - FastAPI, Django, or Flask with async programming, clean architecture, and production-grade code System design skills - you can design scalable, maintainable systems and articulate trade-offs clearly API design expertise - REST, WebSockets/SSE, and understanding ...

layers, and background processing Identify and resolve production incidents, bottlenecks, and technical risks Participate in architectural decision-making and long-term platform evolution Conduct code reviews and maintain engineering quality standards Mentor developers, support onboarding, and provide technical leadership within the team Collaborate with Product, Growth leads … architecture and system design principles Strong PostgreSQL experience: schema design, indexing, query optimization, performance tuning Experience designing APIs and service integrations Solid Git workflows, code review practices, and CI/CD experience Strong debugging, troubleshooting, and root-cause analysis skills Leadership & Ownership: Proven experience leading major technical initiatives Ability ...

hiring Senior Software Engineers to work on business-critical products across our portfolio. You'll be embedded in a product team, working across legacy and greenfield environments, translating ambiguous business problems into production-grade solutions. We care about engineering judgement - the ability to decompose hard problems, design systems that … thinking, not your toolset. You'll work on systems with real users, real constraints, and real consequences. Some of that work will be modernising legacy codebases that have served public services for years. Some will be building new capabilities from scratch. All of it requires someone who thinks ...

Mobile applications that serve tens of millions of cardholders worldwide demand a relentless focus on user experience and code quality. As an iOS Engineer, working in a hybrid mode in London, you will sit at the intersection of scale and creativity, where ambiguity is part of the challenge … modern approaches. The work matters because every feature you help shape reaches users around the world.ResponsibilitiesBuild and maintain iOS applications and write and delete code as neededUse build tools such as Tuist, xcodebuild, GitHub Actions and Circle CI and apply continuous integration patternsFind and fix bugs and apply functional ...