1 to 25 of 45 Refactoring Jobs in London

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 ❯

in performance tests; identify bottlenecks, opportunities for optimization and capacity demands. Engage with development team throughout the life cycle to help develop software for reliability and scale, ensuring minimal refactoring or changes Design automated software and product upgrades, change management, and release management solutions Participate in the 24x7 support coverage as needed Education & Preferred Qualifications B.S/M.S.Degree 1 year More ❯

development (TDD) to ensure code quality and building of new features. Leverage AI-assisted tools (e.g., GitHub Copilot, Claude Code) to streamline development and accelerate feature delivery. Perform code refactoring, increase test coverage, and improve legacy codebases. Apply performance and memory profiling techniques to ensure optimal runtime behaviour. Utilise dependency injection frameworks (e.g., Autofac) to write clean and decoupled code. More ❯

Engineering or equivalent) and/or relevant tech experience. Fluent written and verbal communication skills in English A passion for technology and for learning PREFERRED QUALIFICATIONS Experience designing, building, refactoring or operating large scale and impactful IT systems - either on premises or in the cloud Working knowledge of cloud native architectures Knowledge of a modern programming language (Python, JavaScript, Go 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 ❯

You'll have the freedom to shape how things are built and the trust to get on with it - whether that's improving infrastructure, shipping new features, or quietly refactoring something that needs it. Senior Go Developer - Key Requirements: Significant professional experience in software development, with a strong focus on backend systems Proficiency in Go/Golang and proven expertise More ❯

and testers to design, build and deliver high quality solutions in line with guidance and best practices of the department Drive best practices - think SOLID principles, design patterns and refactoring existing code to be more maintainable and efficient Writing code to develop, fix or enhance features within the PCI Pal product suite Working with your team lead and product owner More ❯

field. Solid understanding of software development principles (SOLID), version control systems, object-oriented programming (OOP) concepts, troubleshooting, and data modeling. Knowledge of frontend performance optimization techniques. Experience with code refactoring, unit testing, and debugging. Familiarity with clean code practices. Proficient in working with relational databases such as MySQL and Microsoft SQL Server, as well as non-relational databases like MongoDB. More ❯

field. Solid understanding of software development principles (SOLID), version control systems, object-oriented programming (OOP) concepts, troubleshooting, and data modeling. Knowledge of frontend performance optimization techniques. Experience with code refactoring, unit testing, and debugging. Familiarity with clean code practices. Proficient in working with relational databases such as MySQL and Microsoft SQL Server, as well as non-relational databases like MongoDB. 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 ❯

APIs, services, and backend components using TypeScript (Node.js) and modern cloud infrastructure. Writing high-quality code that meets reliability, security,and performance standards. Lead by example on code quality, refactoring, and technical best practices. System Design & Technical Collaboration Contribute to architectural decisions, ensuring systems are scalable,observable, and aligned to business needs. Work with Solution Architects and Tech Leads to More ❯

will find yourself joining a small company of 15, this role will be working across the full software development lifecycle but you will also find yourself working specifically on refactoring a cash flow modelling engine which the company has been working on for the last few years. You will be using Java as your main coding language with SQL and More ❯

with CI/CD pipelines Familiarity with cloud services such as Azure, AWS, or GCP is a plus Strong communication and documentation skills Optional Skills: Perform ongoing maintenance and refactoring of AI backend codebase. Use feature stores to manage AI features consistently across training and inference If this role is of interest, please apply with your most recent CV ASAP. More ❯

will find yourself joining a small company of 15, this role will be working across the full software development lifecycle but you will also find yourself working specifically on refactoring a cash flow modelling engine which the company has been working on for the last few years. You will be using Java as your main coding language with SQL and More ❯

will find yourself joining a small company of 15, this role will be working across the full software development lifecycle but you will also find yourself working specifically on refactoring a cash flow modelling engine which the company has been working on for the last few years. You will be using Java as your main coding language with SQL and More ❯

will find yourself joining a small company of 15, this role will be working across the full software development lifecycle but you will also find yourself working specifically on refactoring a cash flow modelling engine which the company has been working on for the last few years. You will be using Java as your main coding language with SQL and More ❯

AWS services (EC2, RDS, SQS, SNS, S3 etc) Excellent with MySQL 5 and 8, both with and without modern frameworks e.g. Eloquent Comfortable with working on legacy code and refactoring PSR coding styles and use of tooling such as CS-Fixer, PHPStan Experience working with CI/CD pipeline tools such as GitHub Actions, Jenkins The ability to write and More ❯

much to do, from work to build out new user journeys and optimise conversion rates in our existing funnels, and answering questions with experiments and fast iteration, to maintaining, refactoring & improving our codebase and tooling. Our ideal engineer is detail focused and resourceful, and keen to understand the bigger picture outside of their product team, contributing to wider engineering and More ❯

Engineering or equivalent) and/or relevant tech experience. - Fluent written and verbal communication skills in English - A passion for technology and for learning PREFERRED QUALIFICATIONS - Experience designing, building, refactoring or operating IT systems in the cloud - Working knowledge of software development practices and technologies highly desired - AWS Certification, eg. AWS Solutions Architect Associate Amazon is an equal opportunities employer. More ❯

will find yourself joining a small company of 15, this role will be working across the full software development lifecycle but you will also find yourself working specifically on refactoring a cash flow modelling engine which the company has been working on for the last few years. You will be using Java as your main coding language with SQL and More ❯

will find yourself joining a small company of 15, this role will be working across the full software development lifecycle but you will also find yourself working specifically on refactoring a cash flow modelling engine which the company has been working on for the last few years. You will be using Java as your main coding language with SQL and More ❯

prevent patients from experiencing health crisis. As a Full Stack Developer you'll collaborate with a small team working on internal tools and data platforms, with a focus on refactoring code, implementing robust security practices and scalable architectures. You'll use a range of technology, primarily JavaScript on the backend and TypeScript on the frontend, you'll build secure, responsive More ❯

software development across teams in the . Developing CLI and web applications using modern interpreted and compiled programming languages, debugging & troubleshooting, IDE & OS Basics, test driven development, clean code & refactoring, version control, CI/CD, alerting & monitoring, Functional & Non-Functional Testing. High performance application design and development in C++, Python and related languages. Conduct security research and develop solutions for More ❯

software development across teams in the . Developing CLI and web applications using modern interpreted and compiled programming languages, debugging & troubleshooting, IDE & OS Basics, test driven development, clean code & refactoring, version control, CI/CD, alerting & monitoring, Functional & Non-Functional Testing. High performance application design and development in C++, Python and related languages. Conduct security research and develop solutions for More ❯

that adheres to industry standards and best practices Troubleshoot and debug issues that arise during development and testing Continuously improve the quality of the codebase through code reviews and refactoring Participate in agile ceremonies such as sprint planning and retrospectives Stay up-to-date with emerging trends and technologies in full-stack development Who You Bring: You have at least More ❯