1 to 25 of 46 Refactoring Jobs in London

Bachelor's degree in computer science, engineering, related field, or equivalent experience - 8+ years of hands-on experience in migration and modernization of mainframe applications to cloud platforms using refactoring approach - Strong hands-on experience in Java and Spring Boot framework development and experience with RESTful web services using Spring Boot - Proficiency in Spring framework components (Spring MVC, Spring Data … Hands-on experience in mainframe technologies including COBOL, JCL, DB2, CICS, IMS, VSAM, PL/1, Assembler, REXX, etc. - Knowledge of various modernization strategies such as rehosting, replatforming, and refactoring - AWS experience required, with proficiency in services such as EC2, S3, RDS, DynamoDB, Lambda, IAM, VPC, and CloudFormation - Experience with build tools like Maven, Gradle and working in agile software More ❯

simple solutions Think a lot about user experience and try to really understand end users' jobs and pain points Think a lot about APIs, modular design and testing Love refactoring and keep trying until you find a better answer Enjoy making the "right way to do it" the path of least resistance Have made a random tool for yourself and More ❯

and design of software solutions working closely with product managers Knowledge of working in an agile fashion, such as Scrum or Kanban Using techniques such as writing unit tests, refactoring, CI/CD Fixing and improving live issues when they occur What you can expect from us We won't just meet your expectations. We'll defy them. So you 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 ❯

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 ❯

Strong SQL proficiency, including data transformation expertise Building and managing cloud software solutions on AWS, GCP, or Azure Interested in working in Ai centric environments Potentially Py03 experience and refactoring Python/Julia code to Rust As a self-starter and exceptional problem-solver in code, you thrive in a fast-paced environment and love to ship working Rust software 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 ❯

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 ❯

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 ❯

clearly and collaborating within a team-based environment to resolve a wide range of challenges. Be in the habit of writing maintainable code. Useful skills include TDD/BDD, refactoring, domain driven design and continuous integration and deployment. Be willing to work primarily on-site at our London, UK office (we can sponsor Work Visas in UK). More ❯

to developers and business stakeholders. Prioritize security, maintainability, scalability, code quality, and future-proofing. Assist with cloud infrastructure maintenance, monitoring, and alerting. Manage multiple development threads, including feature development, refactoring, bug fixing, client customizations, and data mapping. What we're looking for: Strong technical background with experience collaborating with distributed teams. Excellent communication, analytical skills, and a collaborative mindset. Highly More ❯

Lead reviews of architecture, design, operations, process, or post-incident analysis for your team. You will actively participate in reviews of systems owned by partner teams. Drive automation and refactoring of existing solutions, including incorporating new generative AI and machine learning components. Ensure scalability, reliability and efficiency of automation processes. Report and analyze usage statistics of the tools and services 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 ❯

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 ❯

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 ❯

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 ❯

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 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 ❯

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 ❯

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 ❯