1 to 25 of 116 Permanent Clean Code Jobs in London

user experience, and who are excited to solve the unique challenges of agentic orchestration at scale. What You Will Do Build Production Systems: Write clean, extensible code for real users, ensuring systems are well-documented and tested. Full-Stack Shipping: Work across our stack (Python, TypeScript, React, Elixir … that improve education quality and scale our impact. Master AI Engineering: Proactively explore the potential of AI-assisted development (e.g., Cursor, Gemini, or Claude Code) to enhance quality and velocity. Technical Leadership: Act as a team multiplier by feature leading, supporting other engineers, and providing technical direction for your ...

organisation. Your Impact As a Senior SWE, you are a force multiplier whose influence extends beyond your immediate tasks. Technical Excellence: You will produce clean, extensible code that serves as a best-practice example for the squad, possessing a strong understanding of non-functional requirements like security … scalability. System Ownership: You won\'t just launch bugs-free code; you will ensure proactive monitoring is in place, defining new technical metrics to guarantee the health of Multiverse’s systems. Strategic Execution: You will advocate for incremental delivery, taking a fail-fast approach to complex problems and helping ...

portal. Implement AI in the Software Development Life Cycle (SDLC) process. Customise and extend third-party trading systems to meet business requirements. Write clean, well-tested code following SOLID principles, Design Patterns, and Clean Code practices. Apply Test-Driven Development (TDD) and Behaviour-Driven Development … methodologies; maintain test coverage using JUnit, Spock, and Mockito. Participate in code reviews and contribute to the continual improvement of engineering standards. Collaborate with Client Services and Product Management to understand requirements and propose solutions. Manage and mentor a small team of Java developers, promoting a culture of quality ...

join the Regulatory News Service team in London. The role involves full‐cycle Agile development, including requirements analysis, estimation, design, coding, testing, and peer code reviews. You will lead technical solutions, design secure and extensible services, and coordinate with business and technology partners to deliver business value. Responsibilities … solutions. Design applications using common patterns and design tools; ensure designs are fit for purpose, extensible, and reusable. Build secure, controlled solutions and perform code analysis, improving style and usability. Identify and implement code improvements. Develop a deep understanding of users, their needs and behaviours, and bring this ...

event‐driven systems with high reliability, scalability and observability Contribute to technical strategy and long‐term platform direction Write high‐quality, efficient and maintainable code with accompanying automated tests and documentation across UI, services and data storage layers Continuously improve existing services, libraries and shared components Ensure systems … strategies Work closely with product and business stakeholders to translate high‐level problems into thoughtful technical solutions Collaborate with team through active contribution in code reviews, knowledge‐sharing and design discussions Build domain knowledge in business and technology areas Evaluate new technologies pragmatically Contribute to CI/CD pipelines ...

contributor role with broad scope. You'll work across product, design, content, and platform teams, and you'll be expected to contribute through strong code, thoughtful code review, written design, and pragmatic technical judgement. As a Senior UI Engineer, your time will be split between hands-on delivery … across web and mobile, contributing to front-end architecture, and supporting the engineers who specialise in one stack or the other. You'll review code across both repos, contribute to the design system that serves marketing and product surfaces, and weigh in on the decisions that shape ...

full-stack team whilst remaining hands-on with delivery and architecture. You'll provide technical leadership and mentorship to your team, and write clean, maintainable, and well-tested code. You will be accountable for our core domain services, our customer-facing web application and our internally-facing tooling. … with C# and .NET. Deep experience designing event-driven (we use Kafka), service-based systems using DDD and hexagonal architecture. Strong software engineering fundamentals (clean code, automated testing, CI/CD, observability). Hands-on experience with AWS. Actively uses AI tooling (e.g. Copilot, Claude Code ...

Java, C#) Solid software engineering and DevOps skills as well as the complete SDLC applied to data, e.g. design patterns, automation, testing, contract definition, clean code, CI/CD, path to production Worked with one or more cloud platforms and services (AWS, Azure, GCP) Hands-on experience with ...

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 ...

demonstrate that you can think on multiple levels; from strategic and tactical to driving operational excellence and system availability. You are adept at reading code and designing and delivering systems that can exceed the exacting demands of our clients. Ideal skills and experience Solid Java software development skillset, ideally … write production‐quality code. Good experience delivering software in an Agile manner, working as part of a Scrum team. You write high‐quality, clean code that’s reliable, maintainable and performant. Deep understanding of best practices in agile software development. Good at managing stakeholders, mentoring and empowering others. ...

apply them Experience with software engineering and DevOps best practices as well as the complete SDLC applied to data, e.g. automation, testing, contract definition, clean code, CI/CD, path to production Worked with one or more cloud platforms and services ( AWS, Azure, GCP ) Extensive hands-on experience ...

apply them Experience with software engineering and DevOps best practices as well as the complete SDLC applied to data, e.g. automation, testing, contract definition, clean code, CI/CD, path to production Worked with one or more cloud platforms and services (AWS, Azure, GCP) Extensive hands‐on experience ...

enhance services using AmazonConnect , AmazonLex , ContactFlows , Lambda , and LLM driven capabilities Build new features and maintain existing products across multiple Connect environments Write clean, maintainable code in TypeScript , JavaScript , and Python Implement DevOps best practices: CI/CD , automated testing, monitoring, infrastructure as code Participate in code ...

fast-moving, product-focused environment. Responsibilities Play a key role in shaping and maintaining the backend infrastructure, built on a modern JVM stack Write clean, well-tested, production-ready code that the team can rely on Bring fresh ideas to the table — challenging existing approaches and proposing better … Boot or Kotlin or Java to build robust microservices A passion for creating API-first products Ability to write efficient, secure, well-documented, and clean code Familiar with Agile principles and best practices such as peer code review and pair programming Clear understanding of fundamental computer science ...

managers, DevOps, QA, and other engineering teams to align on requirements, plan sprints, and deploy reliable microservices in production environments.Code Quality and Review: Write clean, efficient code following best practices in reactive programming and microservices. Participate in code reviews to ensure high quality and consistency.Testing and Debugging … Build unit tests, troubleshoot, and resolve complex issues in distributed systems, ensuring optimal performance and reliability.Documentation: Maintain documentation for architecture, code, and processes to support team efficiency and knowledge sharing.AI: Use AI tools as part of the daily workflow — for code generation, architecture exploration, codebase analysis, and rapid ...

Azure).* Strong understanding of OAuth2, OpenID Connect, and identity federation protocols.* Proficiency in Linux internals, networking, and performance profiling.* Experience with infrastructure as code, CI/CD pipelines, and monitoring tools.* Passion for clean code, automation, and continuous improvement.* Excellent interpersonal skills and a collaborative mentality.What ...

highly experienced Java Backend Engineer to lead the development of our high-performance risk systems. You will leverage your extensive experience to build clean, maintainable, performant applications; promote best practices, and collaborate closely with our quantitative and product teams. What You’ll Do High-Performance JVM Engineering: Design … risk models. Continuous Codebase Optimization: Optimize and refactor the existing codebase to enhance testing, performance and maintainability Engineering Excellence: Be a bastion of code quality and best practices, paired with a performance mindset. What You’ll Bring Professional Experience: 10+ years of experience as a Java backend engineer Mindset ...

Location & Work Environment: Hybrid work model in London, UK. Collaborative, fast-paced, and engineering-driven culture. Emphasis on engineering autonomy, architectural decision-making, and clean code Join Our Global Team: We invite you to apply for the position at RE Partners. Join us in shaping the future ...

with distributed backend services. This role offers significant ownership and the opportunity to mentor other engineers, contribute to technical strategy, and establish standards for clean, maintainable, and testable code. You’ll be working on systems that are critical to global financial markets, requiring both technical excellence and a strong ...

that use AI to solve real business problems – things like intelligent assistants, workflow automation, or operational dashboards that connect to live business data. Writing clean, well‐tested, well‐documented code that your peers can build on and maintain. Debugging, improving, and taking ownership of live systems – reliability … Production Standards Ship software that is reliable, observable, and maintainable – monitoring, logging, and error handling are part of the job, not an afterthought. Write code and documentation to a standard that the team can build on and support without you in the room. Contribute to code review, testing ...

reliability Implementing and maintaining retrieval systems, including ingestion pipelines, chunking strategies, and advanced techniques such as HyDE Building and owning production AI applications: clean code, robust error handling, well-designed APIs, and data pipelines Crafting effective prompts and optimising across latency, cost, and quality dimensions for different model … deterministic systems through experimentation while balancing latency, cost, and quality trade-offs Nice to Have Experience with AI-assisted development tooling (e.g. Claude Code, GitHub Copilot) Knowledge of when fine-tuning is preferable to prompt engineering or RAG, with hands-on fine-tuning experience Familiarity with real-time streaming ...

paced teams • Strong understanding of scalable architecture, cloud-native development, APIs, microservices, CI/CD and containerised environments • Passion for engineering best practices including clean code, testing, performance, and modern development workflows • Ability to work closely with Product, Design and wider business stakeholders to build customer-focused products ...

analysts, implementation managers and client technical teams to understand client data and reporting requirements. About You: Required Experience: Strong software engineering fundamentals including OOP, clean code, automated testing, CI/CD and observability. Fluent in python and the python data ecosystem (e.g. pandas). Experience building large ...

Strong foundation in object-oriented design, data structures, and algorithms. 4+ Years of experience in C++, Java or Python with the ability to write clean, efficient, and maintainable code. Familiarity with all phases of the Software Development Lifecycle (SDLC). Proven experience building enterprise-grade applications or large-scale ...

Strong foundation in object-oriented design, data structures, and algorithms. 4+ Years of experience in C++, Java or Python with the ability to write clean, efficient, and maintainable code. Familiarity with all phases of the Software Development Lifecycle (SDLC) Proven experience building enterprise-grade applications or large-scale distributed ...