1 to 25 of 1,135 Permanent Clean Code Jobs

Not Just Growing Its Exploding This is your chance to join the foundational engineering team building the future of AI and do it in a culture obsessed with innovation, clean code, and real impact. This is not a maintenance role. Youll be architecting new features, solving deep performance and scalability problems, and working alongside some of the smartest … Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture Solving complex problems in data flow, latency, and scale Contributing to a culture of fast iteration, clean code, and continuous learning Tech Stack: Python (FastAPI, Flask) TypeScript, Node.js, React PostgreSQL, Redis, Kafka Docker, Kubernetes, AWS CI/CD with GitHub Actions, Terraform What Youll Bring … development Strong skills in Python, with exposure to JavaScript/TypeScript Experience with API design, microservices, and cloud deployments Solid understanding of software engineering best practices A passion for clean, maintainable code and performance Experience working in high-growth, product-driven teams Bonus: Experience in data-heavy environments or SC Clearance Package & Perks: 55,000 100,000 base More ❯

Just Growing – It’s Exploding This is your chance to join the foundational engineering team building the future of AI — and do it in a culture obsessed with innovation, clean code, and real impact. This is not a maintenance role. You’ll be architecting new features, solving deep performance and scalability problems, and working alongside some of the … Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture Solving complex problems in data flow, latency, and scale Contributing to a culture of fast iteration, clean code, and continuous learning 🧰 Tech Stack: Python (FastAPI, Flask) TypeScript, Node.js, React PostgreSQL, Redis, Kafka Docker, Kubernetes, AWS CI/CD with GitHub Actions, Terraform 💼 What You’ll … development Strong skills in Python, with exposure to JavaScript/TypeScript Experience with API design, microservices, and cloud deployments Solid understanding of software engineering best practices A passion for clean, maintainable code and performance Experience working in high-growth, product-driven teams Bonus: Experience in data-heavy environments or SC Clearance 🎁 Package & Perks: £55,000 – £100,000 base More ❯

Just Growing – It’s Exploding This is your chance to join the foundational engineering team building the future of AI — and do it in a culture obsessed with innovation, clean code, and real impact. This is not a maintenance role. You’ll be architecting new features, solving deep performance and scalability problems, and working alongside some of the … Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture Solving complex problems in data flow, latency, and scale Contributing to a culture of fast iteration, clean code, and continuous learning 🧰 Tech Stack: Python (FastAPI, Flask) TypeScript, Node.js, React PostgreSQL, Redis, Kafka Docker, Kubernetes, AWS CI/CD with GitHub Actions, Terraform 💼 What You’ll … development Strong skills in Python, with exposure to JavaScript/TypeScript Experience with API design, microservices, and cloud deployments Solid understanding of software engineering best practices A passion for clean, maintainable code and performance Experience working in high-growth, product-driven teams Bonus: Experience in data-heavy environments or SC Clearance 🎁 Package & Perks: £55,000 – £100,000 base More ❯

Just Growing – It’s Exploding This is your chance to join the foundational engineering team building the future of AI — and do it in a culture obsessed with innovation, clean code, and real impact. This is not a maintenance role. You’ll be architecting new features, solving deep performance and scalability problems, and working alongside some of the … Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture Solving complex problems in data flow, latency, and scale Contributing to a culture of fast iteration, clean code, and continuous learning 🧰 Tech Stack: Python (FastAPI, Flask) TypeScript, Node.js, React PostgreSQL, Redis, Kafka Docker, Kubernetes, AWS CI/CD with GitHub Actions, Terraform 💼 What You’ll … development Strong skills in Python, with exposure to JavaScript/TypeScript Experience with API design, microservices, and cloud deployments Solid understanding of software engineering best practices A passion for clean, maintainable code and performance Experience working in high-growth, product-driven teams Bonus: Experience in data-heavy environments or SC Clearance 🎁 Package & Perks: £55,000 – £100,000 base More ❯

Just Growing – It’s Exploding This is your chance to join the foundational engineering team building the future of AI — and do it in a culture obsessed with innovation, clean code, and real impact. This is not a maintenance role. You’ll be architecting new features, solving deep performance and scalability problems, and working alongside some of the … Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture Solving complex problems in data flow, latency, and scale Contributing to a culture of fast iteration, clean code, and continuous learning 🧰 Tech Stack: Python (FastAPI, Flask) TypeScript, Node.js, React PostgreSQL, Redis, Kafka Docker, Kubernetes, AWS CI/CD with GitHub Actions, Terraform 💼 What You’ll … development Strong skills in Python, with exposure to JavaScript/TypeScript Experience with API design, microservices, and cloud deployments Solid understanding of software engineering best practices A passion for clean, maintainable code and performance Experience working in high-growth, product-driven teams Bonus: Experience in data-heavy environments or SC Clearance 🎁 Package & Perks: £55,000 – £100,000 base More ❯

Just Growing – It’s Exploding This is your chance to join the foundational engineering team building the future of AI — and do it in a culture obsessed with innovation, clean code, and real impact. This is not a maintenance role. You’ll be architecting new features, solving deep performance and scalability problems, and working alongside some of the … Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture Solving complex problems in data flow, latency, and scale Contributing to a culture of fast iteration, clean code, and continuous learning 🧰 Tech Stack: Python (FastAPI, Flask) TypeScript, Node.js, React PostgreSQL, Redis, Kafka Docker, Kubernetes, AWS CI/CD with GitHub Actions, Terraform 💼 What You’ll … development Strong skills in Python, with exposure to JavaScript/TypeScript Experience with API design, microservices, and cloud deployments Solid understanding of software engineering best practices A passion for clean, maintainable code and performance Experience working in high-growth, product-driven teams Bonus: Experience in data-heavy environments or SC Clearance 🎁 Package & Perks: £55,000 – £100,000 base More ❯

AWS – paying up to £600/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-ownership engineering culture. What You … for a high-availability platform 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-functional teams including product, design More ❯

AWS – paying up to £600/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-ownership engineering culture. What You … for a high-availability platform 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-functional teams including product, design More ❯

contributing to wider initiatives through collaboration, mentoring, or involvement in technical, architectural, or UI/UX design discussions. You’ll guide work through the full engineering lifecycle—from writing clean, maintainable code through to code review, testing and deployment into production. Quality matters to us, so a thoughtful approach to performance, security, and team-wide engineering standards … and version control (e.g. Git) - Show proficiency or strong aptitude for modern PHP web frameworks - Work with modern tooling and practices, including automated testing, CI/CD pipelines and code review workflows - Champion clean code principles, maintainability and long-term scalability in every solution - Understand and contribute towards high-level architectural decisions and patterns - Contribute to evolving … propose and experiment with new approaches, frameworks or integrations that improve developer effectiveness - Communicate clearly across engineering peers, Product Owners and other parts of the business - Participate in collaborative code reviews and knowledge-sharing sessions to help raise the technical bar - Bring a positive, collaborative attitude and work effectively within an agile team - Provide meaningful input into planning from More ❯

progression and coaching Who are you and what will you offer? A highly experienced Senior Front End Developer with expertise in React plus Next.js, GraphQL and UX. Advocate for clean code and an effective engineering culture (clean code throughout etc) Passionate about accessibility, web standards and design systems. helped and contributed towards initiatives that directly impact More ❯

progression and coaching Who are you and what will you offer? A highly experienced Senior Front End Developer with expertise in React plus Next.js, GraphQL and UX. Advocate for clean code and an effective engineering culture (clean code throughout etc) Passionate about accessibility, web standards and design systems. helped and contributed towards initiatives that directly impact More ❯

progression and coaching Who are you and what will you offer? A highly experienced Senior Front End Developer with expertise in React plus Next.js, GraphQL and UX. Advocate for clean code and an effective engineering culture (clean code throughout etc) Passionate about accessibility, web standards and design systems. helped and contributed towards initiatives that directly impact More ❯

stages of the software development lifecycle—from analysis and design to coding, testing, and deployment. We are looking for a passionate and pragmatic engineer who is committed to writing clean, well-tested code and pushing the boundaries of what our team can achieve. If you are a curious problem-solver who enjoys working across the entire software stack … this is the perfect opportunity for you to grow your skills and make a real impact. Key responsibilities Develop high-quality, scalable code that adheres to SOLID principles and our solution architecture. Contribute to all stages of the software development lifecycle within an agile team, from feature conception to delivery. Write and maintain clean, well-documented code that meets both functional and non-functional requirements. Actively participate in code reviews, sharing knowledge and helping to improve team standards. Collaborate with team members to drive continuous improvement in our development processes and tools. Contribute to the design and implementation of new features, with a strong focus on security best practices. Proactively identify and communicate project risks More ❯

stages of the software development lifecycle—from analysis and design to coding, testing, and deployment. We are looking for a passionate and pragmatic engineer who is committed to writing clean, well-tested code and pushing the boundaries of what our team can achieve. If you are a curious problem-solver who enjoys working across the entire software stack … this is the perfect opportunity for you to grow your skills and make a real impact. Key responsibilities Develop high-quality, scalable code that adheres to SOLID principles and our solution architecture. Contribute to all stages of the software development lifecycle within an agile team, from feature conception to delivery. Write and maintain clean, well-documented code that meets both functional and non-functional requirements. Actively participate in code reviews, sharing knowledge and helping to improve team standards. Collaborate with team members to drive continuous improvement in our development processes and tools. Contribute to the design and implementation of new features, with a strong focus on security best practices. Proactively identify and communicate project risks More ❯

stages of the software development lifecycle—from analysis and design to coding, testing, and deployment. We are looking for a passionate and pragmatic engineer who is committed to writing clean, well-tested code and pushing the boundaries of what our team can achieve. If you are a curious problem-solver who enjoys working across the entire software stack … this is the perfect opportunity for you to grow your skills and make a real impact. Key responsibilities Develop high-quality, scalable code that adheres to SOLID principles and our solution architecture. Contribute to all stages of the software development lifecycle within an agile team, from feature conception to delivery. Write and maintain clean, well-documented code that meets both functional and non-functional requirements. Actively participate in code reviews, sharing knowledge and helping to improve team standards. Collaborate with team members to drive continuous improvement in our development processes and tools. Contribute to the design and implementation of new features, with a strong focus on security best practices. Proactively identify and communicate project risks More ❯

stages of the software development lifecycle—from analysis and design to coding, testing, and deployment. We are looking for a passionate and pragmatic engineer who is committed to writing clean, well-tested code and pushing the boundaries of what our team can achieve. If you are a curious problem-solver who enjoys working across the entire software stack … this is the perfect opportunity for you to grow your skills and make a real impact. Key responsibilities Develop high-quality, scalable code that adheres to SOLID principles and our solution architecture. Contribute to all stages of the software development lifecycle within an agile team, from feature conception to delivery. Write and maintain clean, well-documented code that meets both functional and non-functional requirements. Actively participate in code reviews, sharing knowledge and helping to improve team standards. Collaborate with team members to drive continuous improvement in our development processes and tools. Contribute to the design and implementation of new features, with a strong focus on security best practices. Proactively identify and communicate project risks More ❯

features using Next.js, Node.js, .NET/C#, and TypeScript . Create fast, accessible UIs for customer-facing eCommerce experiences. Develop robust APIs ( REST/GraphQL ) and backend services. Write clean, tested code (e.g., Jest, xUnit, NUnit ) and automate delivery with CI/CD. Optimise for speed, scalability, and reliability; integrate third-party services. Build with cloud-native components … Azure Functions, Service Bus, event-driven ). Take part in Agile ceremonies, code reviews, and a sensible daytime on-call rota. What we’re looking for 5+ years’ experience in full-stack development. Strong TypeScript/JavaScript (ES6+), HTML, CSS ; solid React/Next.js and Node.js . Backend experience with NET/C# . Cloud experience with Azure (Functions …/DevOps. Why join Impact: Ship features used at scale across global markets. Growth: Broaden your skills across cloud, DevOps, and architecture. Culture: Supportive, product-led team that values clean code and learning. Flexibility: Remote-first with balanced on-call coverage. Package: Competitive salary, bonus potential, and clear progression. Ready for the next step? Apply today and let More ❯

annum We are supporting a growing technology consultancy working with a range of clients to design, build, and deliver modern digital solutions. Our team thrives on collaboration, curiosity, and clean code — and we’re now looking for a Software Developer who’s confident working with both Java and C#/.NET Core . This is a fantastic opportunity … What You’ll Do Design, develop, and maintain applications using Java and C#/.NET Core Build and consume RESTful APIs and microservices Collaborate with project teams to deliver clean, maintainable, and scalable code Participate in code reviews, design discussions, and technical planning Support deployment, testing, and maintenance of client solutions 💡 What We’re Looking For 2+ More ❯

annum We are supporting a growing technology consultancy working with a range of clients to design, build, and deliver modern digital solutions. Our team thrives on collaboration, curiosity, and clean code — and we’re now looking for a Software Developer who’s confident working with both Java and C#/.NET Core . This is a fantastic opportunity … What You’ll Do Design, develop, and maintain applications using Java and C#/.NET Core Build and consume RESTful APIs and microservices Collaborate with project teams to deliver clean, maintainable, and scalable code Participate in code reviews, design discussions, and technical planning Support deployment, testing, and maintenance of client solutions 💡 What We’re Looking For 2+ More ❯

an exceptional Senior Python Engineer to take technical leadership of a complex, production-grade codebase. This role involves architecting and developing sophisticated systems that combine AI/LLM integration, code analysis, and security tooling. You'll be responsible for architectural decisions, feature development, team mentorship, and maintaining the highest standards of code quality. Location : Remote Experience Level: Senior … maintain integrations with external APIs and services (LLM providers, databases, etc.) Develop analysis engines and processing pipelines for complex data workflows Implement testing frameworks and validation systems Optimize critical code paths and system bottlenecks Team Collaboration & Mentorship Review pull requests and provide constructive technical feedback Mentor junior and mid-level engineers in best practices and technical growth Maintain comprehensive … Decorators, metaclasses, and advanced language features Modern package management (uv, pip, poetry) Testing frameworks (pytest, mocks, fixtures, test-driven development) Software Architecture: Experience designing modular, plugin-based systems with clean abstractions API Design: Creating intuitive interfaces and maintainable code structures Performance: Profiling, optimization, and handling large-scale data processing Version Control: Git workflows, code review practices, and More ❯

some genuinely impactful business-critical apps and they need a Senior Developer to help drive things forward. This isnt one of those just maintain legacy roles. Youll be writing clean, modern code, solving interesting problems, and helping architect and scale new solutions across websites, middleware, and integrations. The role Developing custom software that supports real business growth Writing … secure, scalable code using best practices (SOLID, OWASP, etc.) Collaborating with stakeholders to shape and deliver solutions Supporting & mentoring junior Developers Keeping things fresh: CI/CD, modern PHP, containerisation, etc. Youll need 3+ years PHP experience (Laravel or Symfony preferred) Strong OOP fundamentals Solid MySQL skills Familiarity with Git, Composer, and dev workflows A passion for clean code, collaboration, and continuous improvement Bonus if you bring Docker experience Exposure to Vue, React or similar Automated testing (PHPUnit/PEST) CI/CD knowledge (GitHub Actions, GitLab CI, etc.) Youll be joining a team that values intelligent, clean engineering and a healthy team dynamic. They've created a mature environment where your voice will shape More ❯

impactful business-critical apps and they need a Senior Developer to help drive things forward. This isn’t one of those “just maintain legacy” roles. You’ll be writing clean, modern code, solving interesting problems, and helping architect and scale new solutions across websites, middleware, and integrations. The role Developing custom software that supports real business growth Writing … secure, scalable code using best practices (SOLID, OWASP, etc.) Collaborating with stakeholders to shape and deliver solutions Supporting & mentoring junior Developers Keeping things fresh: CI/CD, modern PHP, containerisation, etc. You’ll need 3+ years’ PHP experience (Laravel or Symfony preferred) Strong OOP fundamentals Solid MySQL skills Familiarity with Git, Composer, and dev workflows A passion for clean code, collaboration, and continuous improvement Bonus if you bring Docker experience Exposure to Vue, React or similar Automated testing (PHPUnit/PEST) CI/CD knowledge (GitHub Actions, GitLab CI, etc.) You’ll be joining a team that values intelligent, clean engineering and a healthy team dynamic. They've created a mature environment where your voice will More ❯

impactful business-critical apps and they need a Senior Developer to help drive things forward. This isn’t one of those “just maintain legacy” roles. You’ll be writing clean, modern code, solving interesting problems, and helping architect and scale new solutions across websites, middleware, and integrations. The role Developing custom software that supports real business growth Writing … secure, scalable code using best practices (SOLID, OWASP, etc.) Collaborating with stakeholders to shape and deliver solutions Supporting & mentoring junior Developers Keeping things fresh: CI/CD, modern PHP, containerisation, etc. You’ll need 3+ years’ PHP experience (Laravel or Symfony preferred) Strong OOP fundamentals Solid MySQL skills Familiarity with Git, Composer, and dev workflows A passion for clean code, collaboration, and continuous improvement Bonus if you bring Docker experience Exposure to Vue, React or similar Automated testing (PHPUnit/PEST) CI/CD knowledge (GitHub Actions, GitLab CI, etc.) You’ll be joining a team that values intelligent, clean engineering and a healthy team dynamic. They've created a mature environment where your voice will More ❯

one of the UK’s most successful startups, built by top-tier engineers and developers from industry leading teams. We’re looking for a software engineer who enjoys writing clean, functional code and is genuinely passionate about real-world engineering not just building software, but helping change how things are designed and built. Opportunities: Frontend or Backend Tech … frontends using React and TypeScript 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 in Computer Science, Engineering, Physics, Mathematics … web applications in a production environment Strong experience with Python and API frameworks (FastAPI, Flask, etc.) Proficiency with React and TypeScript Comfort or interest in functional programming principles and clean code architecture A genuine interest in engineering and the physical world Ability to thrive in a startup or agile environment with autonomy and ownership Software Engineer – Python/ More ❯

one of the UK’s most successful startups, built by top-tier engineers and developers from industry leading teams. We’re looking for a software engineer who enjoys writing clean, functional code and is genuinely passionate about real-world engineering not just building software, but helping change how things are designed and built. Opportunities: Frontend or Backend Tech … frontends using React and TypeScript 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 in Computer Science, Engineering, Physics, Mathematics … web applications in a production environment Strong experience with Python and API frameworks (FastAPI, Flask, etc.) Proficiency with React and TypeScript Comfort or interest in functional programming principles and clean code architecture A genuine interest in engineering and the physical world Ability to thrive in a startup or agile environment with autonomy and ownership Software Engineer – Python/ More ❯