15 of 15 Refactoring Jobs in the City of London

You will design & develop new features from scratch, as well as improve existing ones. Responsibilities Deliver key milestones on Trading platform Conduct code reviews, write unit tests, make code refactoring and manage technical debt Align and discuss solutions directly with eTraders Provide hands-on support to colleagues when investigating production issues/outages Work in an agile environment, based on More ❯

modern front-end tech. Key Requirements Strong experience with .NET Core , C#, Web APIs, and SQL Proficient in React.js , JavaScript, HTML/CSS (must-have) Experience with code reviews , refactoring , branching , and DevOps . Cloud experience with Azure ; app migration from on-prem is a plus Strong understanding of software design and architecture Insurance domain experience is mandatory What You More ❯

engineering function. Role & Responsibilities: Support the redesign of their data stack, including containerising workflows, migrating to cloud SQL, and introducing tools like Prefect. Maintain and optimise ~60 Python pipelines, refactoring legacy code into modular components. Keep Power BI dashboards accurate and up to date, supporting evolving business needs. Help implement validation and anomaly detection within their pipelines to ensure data More ❯

readiness - particularly within Microsoft Azure. Key Responsibilities: Conduct architecture assessments of applications and platforms to support integration into the enterprise. Evaluate software development practices and identify opportunities for modernisation, refactoring, or migration. Use code analysis tools to identify vulnerabilities and recommend improvements in application security and resilience. Assist in producing executive-level architecture review reports and technical summaries for IT More ❯

Engineer automated solution(s) using Infrastructure as Code and orchestration tooling to fast-track assessment and migration of workloads with minimum downtime. • Optimise infrastructure and modernise applications through rehosting, refactoring, and re-architecting where beneficial. • Utilise Azure Migrate and Google Cloud Migration Center for server, storage, database, and application discovery and migration. Required Skills & Experience: • Excellent leadership and communication skills. More ❯

readiness - particularly within Microsoft Azure. Key Responsibilities: Conduct architecture assessments of applications and platforms to support integration into the enterprise. Evaluate software development practices and identify opportunities for modernisation, refactoring, or migration. Use code analysis tools to identify vulnerabilities and recommend improvements in application security and resilience. Assist in producing executive-level architecture review reports and technical summaries for IT More ❯

end: from design through to deployment and monitoring Working in a cross-functional team with frontend engineers, designers, and product leads Advocating for quality through clean architecture, TDD, and refactoring Participating in code reviews and engineering discussions Optionally contributing to our open-source tooling or engineering blog Tech Stack You’ll Work With: Java 17+ Spring Boot Gradle JUnit/ More ❯

Engineer automated solution(s) using Infrastructure as Code and orchestration tooling to fast-track assessment and migration of workloads with minimum downtime • Optimise infrastructure and modernise applications through rehosting, refactoring, and rearchitecting where beneficial • Utilise Azure Migrate and Google Cloud Migration Center for server, storage, database, and application discovery and migration • Work with our Security and IAM teams to ensure More ❯

Lead final-stage code reviews prior to merge/deploy to ensure: Stability, correctness, and performance impact. Compliance with system architecture and modular design principles. Maintain codebase health through refactoring, standardisation, and enforcing consistent unit/integration test coverage. Coordinate release cadence and sign-off across environments; manage hotfixes and rollback protocols. Trading Engine – Strategy Build & Optimisation Design, implement, and More ❯

utilise your expertise in the Microsoft Power Platform to design, develop, and implement solutions that transform businesses. This work includes migration of legacy services to cloud-based hosting, the refactoring of applications into a modern API-based services architecture and the development of new line-of-business applications. Essential Skills: Power Apps: Proven experience in developing Canvas and Model-driven More ❯

proficiency in Node.js development (TypeScript preferred) Intermediate experience with React.js Hands-on experience with Docker and Kubernetes Strong SQL skills, ideally with Postgres or Oracle Adept at identifying and refactoring code anti-patterns and addressing technical debt Well-versed in CI/CD tools and methodologies (e.g., Jenkins) Deep understanding of testing strategies—from unit and integration to performance and More ❯

Deep expertise across the stack , especially in JavaScript/TypeScript, SQL databases, and AWS infrastructure. 🧱 Strong architectural instincts – you’ve designed and delivered robust, scalable systems before. 🔧 Hands-on refactoring experience – you're comfortable navigating legacy systems and improving them iteratively. 👥 Team-first mindset – you’re humble, collaborative, and put outcomes above ego. 🧭 Clarity and execution – you value simplicity, communicate More ❯

semiconductor processing (Etch, ALD, PECVD). Knowledge of parallelisation techniques (OpenMP, MPI) for high-performance computing. Experience with version control systems like Git (BitBucket, GitHub). Experience with code refactoring, qualification, and established software development practices. Knowledge of kinetic plasma models (Boltzmann solver, Monte Carlo, PIC). In-depth knowledge of rarefied gas flows or reacting flows. Experience with plasma More ❯

of AWS or other cloud infrastructure services. Experience developing and maintaining a variety of self-service delivery mechanisms including web applications, API and data exchanges. Experience working with, and refactoring/rewriting, a legacy codebase. Familiarity with multiple programming languages (Ruby is our primary language at the moment, but we have a diverse tech stack, including Python). Expertise in More ❯

experienced team of iOS engineers, and think about the entire life cycle of the application, from architecture to automated testing. We’re not afraid to do the right thing, refactoring when necessary while at the same time ensuring that we’re shipping new features to consumers as fast as possible. What Make a Great Senior IOS Engineer At Busuu Professional More ❯