1 to 25 of 77 Permanent Clean Code Jobs in London

/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile, high … Deploy and manage services in AWS with Kubernetes (EKS) Design, implement, and own features end-to-end from discovery to production support Advocate for clean code, automated testing, and CI/CD best practices Mentor other engineers and contribute to a culture of knowledge-sharing Collaborate with cross ...

enables users to generate, visualise, and explore thousands of design alternatives. Faster and more intelligently than ever before. Looking for someone who enjoys writing clean, wellstructured code and has a genuine interest in engineering.. not just software, but how things are built in the real world. Backed … Work closely with domain experts (engineers, designers) to translate complex physical problems into usable software features Follow functional programming practices to write testable, composable code Own features from idea to implementation to deployment Contribute to architectural decisions in a fast-moving, early-stage product Requirements Bachelor's degree ...

Jenkins) Implement containerisation using Docker & Docker Compose Contribute to agile teams, collaborating closely with product owners, designers and fellow engineers Apply engineering best practices, clean code principles and secure delivery standards What We're Looking For Required Strong experience building microservices with Java (Spring Boot) Experience developing front … Knowledge of cloud platforms such as AWS or Azure Experience using Docker Comfortable working in agile delivery environments Desirable Terraform or other Infrastructure as Code tools Experience with NoSQL databases (e.g., MongoDB) or SQL (e.g., Postgres) Understanding of web standards, accessibility and development best practice Experience with Apache NiFi ...

that scale efficiently, perform reliably, and integrate seamlessly across business functions. Lead by example in Azure DevSecOps: create and manage pipelines (YAML), infrastructure-as-code (Bicep, Terraform), and container orchestration (AKS, Docker). Embed engineering best practice: implement CI/CD, code quality gates, automated testing, and observability … integration (APIs, pipelines) Cloud & DevSecOps Azure DevOps (Repos, Pipelines, Boards, Artifacts, Test Plans) CI/CD automation, gated releases, and environment governance Infrastructure-as-Code (Bicep, ARM, Terraform) Containerisation (Docker, AKS) and serverless (Azure Functions) Monitoring and observability (Application Insights, Log Analytics) Secrets management and vulnerability scanning (Key Vault ...

experienced engineering team delivering reliable backend services and APIs in a cloud-based environment. This role suits someone who enjoys hands-on development, clean code, and working with up-to-date tools and frameworks. What You’ll Do Build and maintain Python-based backend services and APIs Write … clean, testable, well-structured code Work with cloud infrastructure and containerised environments Collaborate with engineers, product, and data teams Contribute to system design, performance, and reliability Tech Stack Python 3.x FastAPI/Flask/Django REST APIs, async Python PostgreSQL/MySQL/Redis Docker, Kubernetes AWS/ ...

building and scaling our financial operations platform. This is a hands-on, high-impact position where you will be directly responsible for delivering clean, scalable, and high-performance code. You will work closely with product managers, designers, and other engineers to solve complex problems and create intuitive solutions that … working with databases (SQL and NoSQL), APIs, and web technologies. Experience with cloud platforms (AWS, GCP, Azure) Solid understanding of software engineering principles, including clean code, testing, and version control (git). Strong problem-solving skills and the ability to break down complex technical issues and deliver simple ...

DevOps, and QA, to ensure software meets business requirements. Implement and optimise CI/CD pipelines to enhance development efficiency and software quality. Conduct code reviews, providing constructive feedback to enhance team performance and code quality. Troubleshoot and resolve technical issues, ensuring software operates smoothly and efficiently. Stay … successful delivery. Proficiency in multiple programming languages Experience in central government advantageous Experience in a consulting environment Skills So ftware Development Expertise in writing clean, maintainable code and optimising software for performance and scalability. Ability to design and implement software that meets business and technical requirements. Ensure ...

DynamoDB, RDS) NestJS or equivalent back-end frameworks Microservices and event-driven architectures We also actively embrace AI coding assistants (such as Claude Code) to speed up development, improve code quality and reduce repetitive work — and we encourage engineers to use these tools effectively. What we're looking … experience developing UIs with React Solid understanding of cloud-native engineering on AWS Experience with microservices, messaging patterns and distributed systems A commitment to clean code, testing, observability and operational excellence A proactive and motivated mindset — someone who wants to build, ship and iterate quickly Interest ...

performance, and mentoring less- experienced engineers in workflow-centric delivery. This is an ideal role for someone who enjoys solving complex process problems through clean code, automation, and modern engineering practices. The role involves visiting client sites; the company will cover travel expenses. Frequency is uncertain but candidates … maintain automated test suites, CI/CD pipelines, and containerised deployments Optimise Camunda engine performance and monitor workflow metrics for production environments Participate in code reviews, peer testing, and technical design discussions Contribute to their internal best-practice frameworks and automation accelerators Essential Eligible (have resided ...

similar platform. Experience with Scala and Spark. Integrating with backing services, such as PostgreSQL, Redis or S3 Good engineering practices including continuous delivery, clean code, documentation, defensive programming, automated testing and code reviews Working in Agile development and/or DevOps teams Using GitHub/GitLab ...

easily integrate with our ad platform Take ownership of projects from ideation to deployment, with a strong focus on performance and reliability Participate in code reviews, technical design discussions, and agile ceremonies Continuously learn and explore new technologies to improve our stack and developer experience Experience and Qualifications: Experience … modern front-end development practices Willingness to work across the full stack and learn backend technologies Solid understanding of software engineering fundamentals and clean code principles Excellent problem-solving and analytical skills Strong communication skills and ability to collaborate with distributed teams Experience with Kotlin, Java, or other ...

platforms used by thousands of customers worldwide seek a Golang Engineer to help scale the next generation of distributed systems. The engineering culture values clean code, ownership, collaboration, and continuous improvement. The Role You’ll be working on high-performance backend services and infrastructure powering mission-critical systems. … Building APIs, internal tooling, and background processing systems Improving performance, reliability, and security of production services Contributing to architectural decisions and best practices Writing clean, well-tested, and well-documented code What We’re Looking For Strong commercial experience with Go (Golang) Hands-on experience deploying and operating ...

will play a pivotal role in driving innovation, as well as working on their innovative product utilising a JVM stack ensuring quality across their code base. What we expect from the Senior Backend Engineer: Proven experience across backend engineering utilising JVM technologies Proven hands-on experience in system design … architecture Focus on producing clean code whilst promoting excellent coding practices throughout the team Tech stack: Java 11-17, Springboot PostgreSQL/Kafka AWS/Kubernetes/Terraform Typescript/React Benefits: 10% bonus Life assurance 25 days annual leave (option to buy 5 extra) Flexible/hybrid ...

Build and maintain robust, scalable applications across the full stack (Node/React/TypeScript) Collaborate in an agile team environment to deliver clean, maintainable, and testable code Influence architectural decisions and technology choices Optimise Front End and Back End performance to ensure fast, seamless user experiences Contribute … Expertise in React, JavaScript/TypeScript, HTML, CSS, and responsive design principles Strong understanding of Back End technologies and best practices Passion for writing clean, well-tested code Experience with cloud platforms (AWS, Azure, or GCP) Excellent communication skills and the ability to explain technical ideas clearly ...

full stack Build and maintain performant, secure backend services using Node.js and GraphQL Develop user interfaces with React.js and modern front-end practices Write clean, maintainable, and well-tested code Participate in code reviews, team discussions, and agile ceremonies Help improve and evolve architecture, tools, and processes … Experience with relational databases such as Postgres Familiarity with Git and CI/CD workflows Strong collaboration and communication skills Agile development experience Writing clean, testable code Understanding of secure coding practices Ability to work independently and in a team environment If you're interested in this opportunity ...

team. Our CEO Joe has (just about) been successfully dragged away from the keyboard (/voice prompting tool) and persuaded not to dive into code as much as he used to, so we’re now on the hunt for a Founding Engineer - our first full-time tech hire … optimising them and maybe even throwing them away). An arch-pragmatist . You know which parts of the systems you build need the clean code, exhaustive testing and careful refactoring to last years, and which ones only need to support our latest experimentation towards product-market fit. ...

Collaborate with product owners to translate user needs into functional, intuitive digital experiences Ensure alignment with design systems, accessibility standards, and service guidelines Write clean, maintainable, and testable code; participate in code reviews and knowledge sharing Contribute to performance optimisation and Front End best practices Work within ...

talented team on our mission to help people and businesses thrive through technology. If you love untangling hard problems, improving legacy systems, and shipping clean, tested code, you'll fit right in. Your role as a Senior PHP Software Engineer at True9: Lead the back-end - write clean, maintainable, and scalable code using PHP and frameworks like Symfony across a variety of projects. Drive technical direction - work with cross-functional teams to define technical strategy and architecture, helping shape the future of our clients' products. Mentor and empower - provide guidance and mentorship to junior developers, fostering ...

Programming & Tools : Expert-level Python programming Proficiency with ML frameworks (PyTorch, TensorFlow, JAX) Experience with scikit-learn, XGBoost, LightGBM Strong software engineering practices and clean code principles Data & Computing : Experience with big data technologies (Spark, Dask) SQL and NoSQL databases Cloud platforms (AWS, GCP, Azure) Experience Track record ...

Programming & Tools : Expert-level Python programming Proficiency with ML frameworks (PyTorch, TensorFlow, JAX) Experience with scikit-learn, XGBoost, LightGBM Strong software engineering practices and clean code principles Data & Computing : Experience with big data technologies (Spark, Dask) SQL and NoSQL databases Cloud platforms (AWS, GCP, Azure) Experience Track record ...

modern data stack, including time-series databases, object stores, and streaming frameworks like Apache Flink or Spark Streaming . Engineering Rigor: You write clean, testable, and reliable code. You understand that in this environment, a system failure can cost millions in seconds. Bonus - ML Engineering: Experience with model serving ...

with product, engineering, and non-technical stakeholders to embed AI into real workflows Improve the scalability, reliability, and performance of existing ML systems Review code and architecture, setting a high engineering standard Analyse data and run ad-hoc studies to generate actionable insights into marketing effectiveness What They … experience with PyTorch, TensorFlow, or similar ML libraries Experience deploying and maintaining ML models in production Solid software engineering fundamentals (algorithms, data structures, clean code) Comfortable working with Docker and containerised systems Experience collaborating cross-functionally and owning delivery, not just models A mindset focused on impact, curiosity ...

full stack Build and integrate APIs, ensuring secure and efficient data exchange Develop user interfaces using modern JavaScript frameworks and .NET technologies Write clean, scalable, and maintainable code aligned with best practices Collaborate with cross-functional teams to translate business requirements into technical solutions Participate in code ...

cross-browser compatibility. Work with back-end teams to integrate front-end functionality with APIs and data sources. Conduct testing, debugging, and peer code reviews to ensure clean, maintainable code. Stay current with front-end trends, tools, and emerging technologies to continuously improve delivery practices. Contribute to technical … discussions and process improvements across the wider engineering community. About You You're an experienced Front-End Developer who takes pride in writing clean, efficient code and delivering exceptional user experiences. You thrive in collaborative environments, value attention to detail, and enjoy solving complex challenges with creativity ...

Java 21) Working with PostGres Building microservices with Spring Boot and related frameworks Developing and maintaining RESTful APIs and event-driven systems Writing clean, testable code and following TDD principles with a strong focus on unit testing Working closely with DevOps, Product, and QA teams to deliver high ...