26 to 50 of 107 Code Quality Jobs in London

changing environment Reliability mindset: monitoring, logging, retries, QA, incident-aware design Comfortable operating in a sprint with incomplete context and tight deadlines Additional Skills Code quality & maintainability - Writes readable, consistent, and well-structured code Understands trade-offs between speed of delivery and long-term maintainability Comfortable … codebase with established guidelines Testing mindset - Understands the value of unit, e2e, and regression tests to minimise disruption to the frontend apps Writes testable code and doesn’t rely solely on manual testing Collaboration & ownership - Can work closely with frontend, product, and design teams Takes ownership of features ...

scale social impact initiatives. You’ll work end-to-end across backend services and user-facing applications, taking responsibility for writing, testing and deploying code and infrastructure that serves millions of users. You’ll collaborate closely with Product Managers and UX Designers to translate requirements into high-quality … ensuring performance, security and resilience across the full product experience. Responsibilities: Build and maintain fullstack features across frontend and backend services Write clean, maintainable code using TypeScript (Node.js backend) Design reusable components and patterns that scale across the platform Build event-driven applications using AWS Lambda ...

maintaining business-critical applications built on C#/.NET and SQL . You'll play a key role in technical decision-making, improving code quality, and ensuring the reliability and performance of core systems. You'll work closely with other developers, QA, product owners, and non-technical … C#/.NET Write, optimise, and maintain SQL queries, stored procedures, and database schemas Contribute to technical architecture and system design discussions Carry out code reviews and promote best development practices Support and mentor junior and mid-level developers Troubleshoot, debug, and improve existing systems Collaborate closely with business ...

enterprise software. Key Responsibilities Build and maintain production- grade applications using TypeScript, Node. js, and React Improve system performance, scalability, and reliability Participate in code reviews, testing strategies, and maintaining clean architecture Collaborate with cross- functional teams on product and technical solutions Contribute to the adoption of modern development … Experience improving performance, scalability, or reliability of applications Familiarity with cloud platforms such as AWS, GCP, or Azure Understanding of clean architecture, testing, and code quality practices Desirable/Nice- to- Have Consultancy or client- facing engineering experience Exposure to startup and enterprise environments Experience with ...

retries, QA, incident-aware design Comfortable operating in a sprint with incomplete context and tight deadlines Experience in GCP, Prisma and terraform Additional Skills Code quality & maintainability Writes readable, consistent, and well-structured code Understands trade-offs between speed of delivery and long-term maintainability Comfortable … codebase with established guidelines Testing mindset Understands the value of unit, e2e, and regression tests to minimise disruption to the frontend apps Writes testable code and doesn’t rely solely on manual testing Collaboration & ownership Can work closely with frontend, product, and design teams Takes ownership of features ...

architecture and evolution of a world-class FX trading platform processing billions of messages per day Mentor engineers and promote best practices around testing, code quality and performance Operate within modern engineering practices including CI/CD, TDD, and Agile 💻 Tech Environment Core Java (no frameworks), multithreading ...

Service Cloud features, including case management, knowledge base, automation, and workflows. · Develop complex Salesforce Flows to automate business processes. · Write, test, and deploy Apex code (classes, triggers, and components) to extend Salesforce functionality. · Participate in the full software development lifecycle, including requirements gathering, development, testing, deployment, and maintenance. · Implement … maintain robust DevOps practices, including source code management, branching strategies, pull requests, and commits. · Utilize DevOps tools such as ( Specify: Copado, Gearset, Azure DevOps, or others ) for deployment and release management. · Work within an Agile development environment, using Jira for task management and collaboration, specifically managing user stories. · Ensure ...

Postgres, Docker, Terraform Frontend: SolidJS, TypeScript Infra: AWS (Serverless & Containers), Confluent AI Ops: Heavy daily use of an AI Coding Assistant (we use Claude Code) + AI Engineering for the product Who You Are (The AI-Native Mindset) We are looking for someone who doesn't just write code … tech advancements. Have realised that raw coding is becoming commoditised, and you now find your flow state in high-level architecture, managing agents, enforcing code quality, and doing more with less. Dislike manual work that AI can solve and proactively automate your workflows. Are driven by impact ...

deliver defect fixes in a timely manner, ensuring minimal business disruption. Create and execute detailed test plans, thoroughly document results, and ensure high-quality software delivery. Contribute actively to project ceremonies, including daily stand-ups, cross-functional discussions, and design reviews. Provide regular progress updates to lead engineers ...

understanding of UI engineering principles, state management, component design, and scalable frontend systems. Pragmatic and product-driven — you balance speed, experimentation, and long-term code quality. Comfortable working with cloud-based platforms and collaborating closely with backend services and APIs. Bonus: Familiarity with Python or an interest in contributing ...

colleagues. Accountabilities Development and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance. Cross-functional collaboration with product managers, designers, and other engineers to define software requirements, devise solution strategies … ensure seamless integration and alignment with business objectives. Collaboration with peers, participate in code reviews, and promote a culture of code quality and knowledge sharing. Stay informed of industry technology trends and innovations and actively contribute to the organization’s technology communities to foster a culture ...

reliability and simplicity Identifying engineering pain points and automating manual processes Improving developer documentation, onboarding guides and internal wikis Championing best practices in testing, code quality and deployment Monitoring build times, test reliability and other developer feedback loops Supporting internal development and test environments Promoting a developer … collaboration skills Experience improving developer workflows or engineering processes Nice to have: Experience with developer portals or internal platforms Observability tooling knowledge Infrastructure-as-Code experience Experience improving DX in monorepos or microservices environments Why join? Shape engineering excellence across the organisation Drive real improvements to developer speed, quality ...

architecture and evolution of a world-class FX trading platform processing billions of messages per day Mentor engineers and promote best practices around testing, code quality and performance Operate within modern engineering practices including CI/CD, TDD, and Agile Tech Environment Core Java (no frameworks), multithreading ...

high-performance ELT pipeline patterns using Databricks. Mentor and develop engineers across the team, creating learning and development plans. Champion engineering best practices, including code quality, testing, and documentation. Conduct peer reviews to ensure high-quality and reliable deliverables. Optionally contribute to on-call platform ...

core data infrastructure, ensuring optimal scalability, reliability, and security. Act as a hands-on contributor, tackling the most complex technical challenges and providing code-level guidance for critical components. Establish and enforce technical standards for code quality, observability, and Infrastructure-as-Code (IaC) across ...

delivery What you'll do Lead technical design and implementation across data services, APIs, and platform components Set and uphold engineering standards (patterns, code quality, reviews, testing approach) Drive modern delivery practices: CI/CD, test automation, DevOps ways of working Ensure solutions are secure, scalable … production-ready in a regulated environment Mentor and support engineers through pairing, coaching, workshops and code reviews Work directly with front-office/investment stakeholders to translate outcomes into technical delivery Operate independently, owning your technical backlog and delivery plan with minimal day-to-day oversight What they ...

about architecture, performance, scalability, and long-term product impact. You don’t just close tickets, you take ownership, think systemically, and write clean, maintainable code across the entire stack. Collaboration is second nature. You enjoy pairing, knowledge sharing, and healthy technical debate, plus you’re curious about tooling, infrastructure … every day Contributed to architecture decisions across frontend and backend services Improved performance and reliability of key product areas Helped shape engineering practices around code quality, testing, and maintainability Tech Stack: TypeScript/JavaScript Node.js (API development) React, Next.js AWS Serverless (Lambda, API Gateway) Vercel SQL Server ...

within tight development cycles — branch, commit, test, and ship via GitHub-based CI/CD pipelines. Write comprehensive unit tests and contribute to high code quality standards. Collaborate within agile sprints and contribute to technical design decisions. The Ideal Candidate Our client is seeking someone with: Strong … Search, Cosmos DB, AKS). Experience integrating AI/LLM-based services into production systems. Familiarity with modern development tooling such as VS Code and AI-assisted coding tools. Why Apply? Work on a genuinely AI-first product with real-world commercial impact. Join a collaborative, technically strong team ...

Client is looking for an ambitious Engineer who sits at the Intersection of Software Engineering and Offensive Security . You will Not Just Write Code; you will Architect the Cloud-Native Engines & Big Data Pipelines that Power Automated Red Teaming. Your work will "Bridge the Gap" Between Manual Research … Offensive Tools, Ensuring Efficiency. Operationalize Research: Collaborate in Translating Manual Exploit Research into Automated, High-Fidelity Detection Engines. Engineering Excellence: Champion Best Practices in Code Quality, CI/CD & Infrastructure-as-Code (IaC). Searches: Offensive Security Engineer/Cyber Security Engineer/Software Security Engineer ...

risk and regulatory requirements. Optimise applications and Linux environments to achieve low-latency trading performance. Promote best practices across the software development lifecycle, including code quality, automated testing and CI/CD pipelines. Drive continuous improvements in system performance, reliability and maintainability. Provide technical leadership and mentorship … performance, usability and operational stability. Deliver a robust and scalable FX matching platform covering FX Spot and FX Swaps. Drive improvements in software quality, platform performance and team productivity. Required Experience Degree in Computer Science, Software Engineering, Electrical Engineering, or a related discipline Extensive hands-on experience ...

agent‐based AI systems with orchestration tools (e.g., LangChain, CrewAI) in production. Strong Python engineering skills with solid testing, optimisation, CI/CD, and code quality; Experience implementing and scaling vector databases (Pinecone, Weaviate, Milvus) for retrieval and reasoning workloads. Deep expertise in cloud‐native AI engineering ...

Collaborate with cross-functional teams to gather requirements and translate them into clean, efficient code. Contribute to architectural discussions and technical design decisions. Ensure code quality through testing, peer reviews, and best-practice development standards. Troubleshoot, debug, and optimise existing applications. Required Skills & Experience Strong commercial experience … projects. Ongoing training, certifications, and professional development support. A collaborative, supportive consultancy culture. How to Apply If you're passionate about building high-quality UI solutions and want to work with a forward-thinking consultancy, we'd love to hear from you. Modis International Ltd acts ...

experience integrating ML models into production systems (LLMs via APIs, fine-tuning, RAG, embeddings, agents). Ability to move fast without compromising on code quality, testing, and operational excellence . Nice to have Experience with tools such as LangChain, LlamaIndex, Haystack, Hugging Face, Weaviate, CrewAI, AutoGen ...

cases Work closely with data engineers and cloud infrastructure to scale solutions Translate technical work into clear commercial impact for senior stakeholders Contribute to code quality, deployment standards, and best practices Key Details Salary: £90,000–£110,000 base + 15–20% discretionary bonus Working model: Hybrid ...

inference pipelines Collaborate closely with ML Scientists to productionise research models Work with engineering teams to ensure robust, secure and efficient deployment Contribute to code quality, documentation and best practices across the ML engineering function What the role offers: Work on impactful health-tech Exposure to large ...