101 to 125 of 134 Clean Code Jobs in London

third-party and contract engineers Contribute to engineering communities and help define best practices Drive adoption of global standards across security, performance, and code quality Operational Performance Troubleshoot and resolve critical data issues with urgency Deliver long-term fixes rather than short-term patches wherever possible Optimise pipelines …/BigQuery Proven ability to work across both legacy systems and modern cloud environments Key Skills DevOps mindset – you automate wherever possible and write clean, testable code Pragmatic approach – focused on delivering value without overengineering Strong communicator – confident engaging with stakeholders across the business Why Apply? High-impact ...

SaaS products at scale Strong understanding of UI/UX principles and performance optimization Excellent communication, problem-solving, and leadership skills Passion for writing clean, maintainable, and scalable code Bonus: Experience in financial technology or asset management software. Salary £85k - £95k + benefits If your keen to find ...

testing new AI frameworks and technologies Ensuring AI systems are developed responsibly, ethically, and with a strong focus on transparency and fairness Writing clean, maintainable, and scalable code Requirements Degree in Computer Science, Artificial Intelligence, Data Science, Mathematics, Engineering, or a related field Strong understanding of machine learning ...

Senior Software Engineer located in London, United Kingdom. The role involves contributing to the rebuild and refinement of our core platform and writing clean, scalable code using TypeScript, React, and SQL. The ideal candidate will collaborate cross-functionally and design complex data models for performance. This full-time ...

responsibilities will include integrating RESTful APIs, efficiently managing app state, handling authentication flows like Auth0, and diagnosing performance bottlenecks. Additionally, you will participate in code reviews, write clean and maintainable code, and mentor junior developers to help shape frontend standards across the team. Ideal candidate will bring ...

they do. Were looking for a Mid/Senior Backend Engineer to join a team that keeps frameworks lean and focuses on what matters: clean, maintainable code, shipped fast with TDD, DDD, and continuous integration and delivery. Our stack includes Java 17/21, GCP, Kubernetes, Grafana, Prometheus ...

Level to Senior Python Developer with experience working with modern AI and LLM technologies. We’re looking for someone who can write clean, maintainable Python code and is comfortable working with scientific data, document-processing workflows, and AI-assisted systems. You’ll contribute to the design and development … someone who enjoys startup environments, takes initiative, and is comfortable working across backend engineering, AI tooling, data workflows, and product collaboration. Responsibilities Write clean, maintainable, and well-tested Python code. Design and maintain scalable, reliable backend systems, APIs and data-processing pipelines. Work with structured scientific, clinical, and regulatory ...

services and APIs using Scala and Play Framework . Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. Write clean, idiomatic Scala code and apply functional programming principles where appropriate. Develop and maintain automated tests (unit and integration) and support test automation initiatives. … Collaborate with product owners, UX designers, QA, and other engineers in an Agile environment (Scrum/Kanban). Participate in code reviews, architecture discussions, and pair programming sessions. Troubleshoot and resolve production issues; contribute to reliability and observability (logging, metrics, alerts). Assist in defining CI/CD pipelines ...

services and APIs using Scala and Play Framework . Implement RESTful endpoints, manage request/response lifecycle, and handle authentication/authorization flows. Write clean, idiomatic Scala code and apply functional programming principles where appropriate. Develop and maintain automated tests (unit and integration) and support test automation initiatives. … Collaborate with product owners, UX designers, QA, and other engineers in an Agile environment (Scrum/Kanban). Participate in code reviews, architecture discussions, and pair programming sessions. Troubleshoot and resolve production issues; contribute to reliability and observability (logging, metrics, alerts). Assist in defining CI/CD pipelines ...

engineers through the full software development life cycle. Your Responsibilities: Lead feature delivery and shape technical strategy Collaborate closely for pixel-perfect implementation Write clean, maintainable Kotlin code with Jetpack Compose Champion TDD, CI/CD, and other best practices Mentor and support fellow engineers What ...

industries including Fire, Security, Telecare, Retail, Water, and National Infrastructure. The Role You will: Build and maintain backend systems using .NET/C# Design clean, scalable, maintainable architectures Contribute to high automated test coverage across all services Translate business requirements into secure, performant backend solutions Collaborate closely with front … challenges with elegant, thoughtful solutions Our Technical Environment Backend: .NET/C# Automated Testing: NUnit Solution Testing: Playwright Strong focus on: Reliability and performance Clean, maintainable code High‐level automated test coverage Scalable, production‐ready services Our Culture We’re building a team centred on collaboration, inclusion ...

everyone’s job. What you bring Strong engineering fundamentals. We move fast but we don’t ship rubbish. You write clean, maintainable code and you care about getting the details right — from data modeling to error handling to deployment. A product mindset. You think about what … keep up. Why Join? Join an exciting, high performing team that values substance over theatre Massive ownership and impact from day one — your code ships to real customers running real energy infrastructure Work on technically challenging systems with real-world environmental impact — data ingestion, scalability, AI-driven intelligence Competitive ...

understanding of system design, scalability, and reliability . A product-oriented mindset — you design with end users and UX impact in mind. Passion for clean abstractions, maintainable code, and well-defined interfaces. Nice-to-haves Experience with cloud-native infrastructure (AWS, GCP, or Azure). Familiarity with auth ...

maintain backend applications using Java and Spring Boot. Design and implement RESTful APIs and microservices. Integrate applications with databases and third-party services. Write clean, efficient, and reusable code/coding practices. Required Skills Strong knowledge of Core Java and Spring Boot. Experience with REST APIs and Microservices ...

week per month. Focus A customer-centric attitude, an accountability mindset, and a bias to action. A track record of shipping clean, well-documented code in complex environments. An ability to create structure from chaos, navigate ambiguity, and adapt to the dynamic nature of the AI ecosystem. Strong ...

someone with 2-3 years of DevOps, Platform Engineering or SRE experience who wants to take ownership of CI/CD, infrastructure-as-code, and platform tooling while continuing to build production-grade coding skills. The OpportunityThis role blends hands-on engineering with platform ownership. You'll spend your … Engineering & Automation (60%) Design, build, and optimise CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI) Develop and maintain Terraform modules for infrastructure-as-code Build automation tools (CLI tools, scripts, GitHub Apps, self-service tooling) Own observability: dashboards, alerts, monitoring, and runbooks Continuously improve platform processes and reduce ...

scalability and performance. Configure and develop solutions across Salesforce Service Cloud and Experince Cloud Estimate Jira stories accurately and deliver robust, well-tested code in line with agreed timelines. Write clean, efficient Apex code and utilize Salesforce’s declarative tools to meet business needs. Conduct unit testing … document results, and contribute to system testing cycles. Maintain and enhance CI/CD pipelines using tools such as GitHub, ensuring seamless code deployment and version control. Review and manage the impact of Salesforce seasonal releases, including system updates and regression testing. Essential Skills and Experience Significant hands ...

total cost of ownership, and create a competitive advantage for Citi. We want to regularly engage with talented individuals who are passionate about producing clean, testable code as part of a high performing team. We have found this to be way more important than experience in the financial ...

full-stack architectures from scratch Develop backend services using Encore TS (experience with Express is highly transferable and sufficient) Build and consume APIs, ensuring clean data flow between front-end and back-end Work with PostgreSQL and Prisma for data modeling and persistence Deploy and maintain services on Google … Cloud Platform (GCP) Build and maintain mobile applications using Capacitor Style applications using Tailwind CSS (and maintain existing SCSS where needed) Write clean, maintainable, and efficient code across the stack Debug, troubleshoot, and optimize performance for a seamless user experience Collaborate closely with the founding team on product ...

Purpose of the role: Join one of the core cross functional mission teams to build and develop technology products. What you'll do: Develop clean, elegant, and reusable code that is well tested and easy to maintain and extend. Work with stakeholders across the business to drive ...

multi-step reasoning - RAG systems that actually deliver, not just proofs of concept. Strong Python skills and solid machine learning foundations - able to write clean, production-grade code with a firm grasp of system design principles. Cloud deployment experience across AWS, GCP or Azure, using modern engineering practices. ...

reduce total cost of ownership, and create a competitive advantage for Citi.We want to regularly engage with talented individuals who are passionate about producing clean, testable code as part of a high performing team. We have found this to be way more important than experience in the financial ...

high impact and low ego. The successful candidate will work at the intersection of quantitative research, data engineering, and high-performance software development — with code that moves rapidly from prototype to production and directly influences trading performance. The Role As a Quant Developer, you will: Collaborate closely with quant … researchers to productionise models and design scalable research/tooling infrastructure Develop high-performance, robust code across Python and C++ Build and maintain data pipelines, research platforms, and components of the live trading stack Optimise system performance, reliability, and throughput across large-scale datasets Contribute to architectural decisions across ...

months ago Tech stack TypeScript React SQL What You'll Be Doing Contribute to the rebuild and refinement of our core platform Write clean, scalable, well-documented code in TypeScript, React, and SQL Design and maintain complex data models for performance and extensibility Collaborate cross-functionally Compensation Competitive ...

role: Design, develop, and maintain software applications: Collaborate with cross-functional teams to deliver high-quality solutions that meet business requirements. Write clean, efficient, and scalable code: Follow best practices and coding standards to ensure software maintainability and performance. Participate in code reviews and provide feedback: Review … peers code for quality, security, and adherence to project guidelines, and incorporate feedback into your work. Debug and resolve software defects and issues: Identify, analyse, and fix bugs in a timely manner to ensure smooth software operation. Collaborate with stakeholders and team members: Communicate effectively with product managers, designers ...