11 of 11 Legacy Code Jobs in London

large-scale, business-critical application, you'll play a key role in modernising and simplifying a complex Python estate. The work will involve refactoring legacy code, breaking down monolithic applications into modular components, and supporting the migration of solutions from on-prem environments into AWS. This … Stack Engineer. Expert-level Python development skills with strong Object-Oriented Programming (OOP) experience. Proven experience developing, maintaining and modernising large enterprise applications, including legacy code refactoring. Strong experience with AWS, cloud migration projects, and modern software engineering practices. Strong SQL skills, with experience working on data-intensive ...

Developer KeynotesKotlin & Jetpack Compose first approachOver 10M+ downloadsThe codebase uses modern Android Jetpack components, Kotlin Coroutines, Flow/StateFlow, and RxJava in legacy areasMake an impact on millions of customersNever ending chance of experimenting with latest tech, including KMM, Jetpack Compose and more!We have done some significant work … Android developerYou are extremely comfortable with KotlinYou know reactive programming techniquesYou can contribute to discussions on technical architecture and design You believe that all code is legacy code if it isn't unit/UI testedYou love agile/scrum and can work as part ...

Building 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.Providing on-call ...

time messaging systems. Enhance Observability: Build deep telemetry and metrics to diagnose latency and performance anomalies across the full client-to-backend path. Kill Legacy Code: Gracefully sunset legacy networking components without interrupting the user experience for hundreds of millions of clients. Who You Are An Expert ...

Python or 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-critical, high ...

Python or 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-critical, high ...

Python or 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-critical, high ...

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 ImpactDrive a strategic transformation: Work alongside domain … cloud-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 ...

trading and research analysis workflows by utilizing and expanding on DRW’s in-house infrastructure and improve productivityEvaluate new technologies and identify/deprecate legacy code to improve on the current technological stackCollaborate with other engineers, traders, and researchers to design custom frameworks or end-user solutionsWrite performance … sensitive code and user-friendly APIs to facilitate access to our in-house data analysis infrastructureLead design discussions and conduct code reviews to maintain high standards and quality of written codeRequirements:Bachelor’s or Master’s degree in Computer Science or related Engineering disciplineMinimum of 3 years ...

London in need of a developer to architect and enhance their regulatory reporting infrastructure. You'd be designing systems from scratch, not just maintaining legacy code. The technical challenges involve processing massive datasets, implementing robust validation protocols, and creating scalable solutions that meet strict regulatory requirements. ...

final implementation. A significant portion of your time will be spent building new products and systems, meaning you will spend less time maintaining legacy code and more time creating. You will also serve as the go-to front-end expert on the team, tackling UI-complex challenges ...