26 to 50 of 99 Code Quality Jobs in London

Senior Backend Engineer [Django]

Hiring Organisation
QOVES
Location
Greater London, England, United Kingdom
management Lead the development of AI/LLM-powered features, leveraging tools like Langchain and other AI frameworks Write clean, testable, and well-documented code, deploying via Docker in a CI/CD pipeline Manage and collaborate on code via GitHub, driving code quality ...

UI Developer - 13042

Hiring Organisation
Pontoon
Location
Bromley, London, United Kingdom
Employment Type
Contract
responsive and accessible interfaces that meet enterprise standards (e.g., WCAG ). Collaborate with product managers, UX designers, and backend engineers to deliver high-quality features. Integrate with RESTful APIs … manage application state using Redux Toolkit and RTK Query . Incorporate Vercel AI SDK UI components to enhance chatbot functionality and user experience. Ensure code quality through unit and integration testing with Vitest and React Testing Library . Participate in code reviews and contribute to architectural ...

Web User Interface Developer

Hiring Organisation
Pontoon Solutions
Location
Bromley, England, United Kingdom
responsive and accessible interfaces that meet enterprise standards (e.g., WCAG ). Collaborate with product managers, UX designers, and backend engineers to deliver high-quality features. Integrate with RESTful APIs … manage application state using Redux Toolkit and RTK Query . Incorporate Vercel AI SDK UI components to enhance chatbot functionality and user experience. Ensure code quality through unit and integration testing with Vitest and React Testing Library . Participate in code reviews and contribute to architectural ...

Senior Developer

Hiring Organisation
Tiro Partners
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day
demonstrate what's possible when AI is deeply integrated throughout the software development lifecycle, working with the latest AI technologies including Claude Code, GitHub Copilot, MCP, LLMs. Senior Software Engineer will: Develop and maintain software applications using Java Implement AI solutions to enhance software functionality and accelerate development workflows … Collaborate with cross-functional teams to define, design, and ship new features Leverage AI technologies throughout the development lifecycle Participate in code reviews and maintain code quality standards Modernise legacy services using AI-first approaches The ideal experience: 6+ years of experience in software development Strong ...

Senior Developer

Hiring Organisation
Tiro Partners Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
demonstrate what's possible when AI is deeply integrated throughout the software development lifecycle, working with the latest AI technologies including Claude Code, GitHub Copilot, MCP, LLMs. Senior Software Engineer will: Develop and maintain software applications using Java Implement AI solutions to enhance software functionality and accelerate development workflows … Collaborate with cross-functional teams to define, design, and ship new features Leverage AI technologies throughout the development lifecycle Participate in code reviews and maintain code quality standards Modernise legacy services using AI-first approaches The ideal experience: 6+ years of experience in software development Strong ...

ROL SDET

Hiring Organisation
Reed.co.uk
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 per annum
responsible for the delivery of automated tests to support current and future product features, working closely with Engineers on automation activities to ensure quality is built into our applications whilst aligning with our delivery commitments. As well as functional coverage you will also ensure non functional requirements … process Configuring and maintaining CI/CD pipelines in Azure DevOps Working closely with Software Engineers and Product Managers to identify testing tasks, evaluate code quality and fitness to requirements Reviewing application architectures, pair programming & code reviews to improve testability Analysing telemetry to identify and reproduce ...

Senior Laravel Developer

Hiring Organisation
Rise Technical Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £65,000 per annum
MySQL - Lead the delivery of complex features and contribute to system architecture and technical decision-making - Improve automated testing, performance, security, and overall code quality - Build and maintain high-quality APIs and frontend SPA/PWA interfaces - Mentor developers and support best practice across ...

AWS Platform Engineer

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
maintaining platform and application services Acting as a senior technical contributor across delivery teams Driving best practices in automation, CI/CD, testing, and code quality Working in agile delivery teams (Scrum/Kanban/Lean) Solving complex technical challenges using sound engineering principles What … grade systems Solid use of Git-based version control Experience with CI/CD tooling (e.g. Jenkins, Bamboo, TeamCity, Bitbucket) Automated testing and static code analysis (e.g. SonarQube) Strong understanding of software design patterns Comfortable working in fast-paced, agile environments Nice to have (not essential) Cloud platforms ...

Senior Full Stack Engineer FX e Trading London

Hiring Organisation
Atrium Global
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £750 to £900 per day
endfrom UI and desktop container experiences to low-latency backend services. Lean into the latest AI coding tools to accelerate delivery, strengthen code quality, and enhance developer experience. 4 days onsite in London. PAYE/Umbrella options. Lead design and development of full-stack features: React/… trading workflows. Optimize latency, throughput, and reliability across the stack; instrument observability (metrics, tracing, logging) and performance profiling. Establish engineering best practices: code standards, testing strategies (unit/integration/E2E), CI/CD, secure coding, and release management. Mentor engineers through code reviews, design sessions, and hands ...

FX e Trading Senior Full Stack Engineer (React TypeScript + Java)

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£759 - £900 per day
from UI and desktop container experiences to low-latency backend services. Lean into the latest AI coding tools to accelerate delivery, strengthen code quality, and enhance developer experience. What you’ll do Lead design and development of full-stack features: React/TypeScript web apps, desktop container … trading workflows. Optimize latency, throughput, and reliability across the stack; instrument observability (metrics, tracing, logging) and performance profiling. Establish engineering best practices: code standards, testing strategies (unit/integration/E2E), CI/CD, secure coding, and release management. Mentor engineers through code reviews, design sessions, and hands ...

Senior Full Stack Engineer – FX e Trading – London

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Temporary
Salary
£750 - £900 per day
from UI and desktop container experiences to low-latency backend services. Lean into the latest AI coding tools to accelerate delivery, strengthen code quality, and enhance developer experience. 4 days onsite in London. PAYE/Umbrella options. Lead design and development of full-stack features: React/… trading workflows. Optimize latency, throughput, and reliability across the stack; instrument observability (metrics, tracing, logging) and performance profiling. Establish engineering best practices: code standards, testing strategies (unit/integration/E2E), CI/CD, secure coding, and release management. Mentor engineers through code reviews, design sessions, and hands ...

Senior Back-End Developer – Java

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £800 per day
team, including product owner, business analysts, scrum masters, front-end and back-end developers • Design, develop and implement microservices using Java Spring Boot, ensuring code is modular, testable and re-usable • Design, develop and implement responsive and intuitive user interfaces using Angular and TypeScript/Java ensuring an exceptional … communication between front-end and back-end components • Create RESTFul APIs (gRPC) to enable smooth communication between microservices and external systems • Conduct regular code reviews, unit testing, CI and maintain high code quality and reliability • Develop and present high-level design proposals, renderings, and presentations ...

JavaScript Developer

Hiring Organisation
SCALERS GROUP LIMITED
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
engineers and product specialists, helping to shape the future of media technology. Key Responsibilities Develop and maintain scalable, high-quality JavaScript (Vanilla) code Collaborate closely with engineering and product teams to deliver new features and tools Contribute to backend services using Node.js Work with systems such … Redux for efficient state management Ensure code quality through testing frameworks Build and deploy using AWS cloud infrastructure Skills & Experience Required Strong commercial experience with JavaScript (Vanilla) Solid understanding of Node.js Familiarity with state management libraries like Redux Proficient with testing frameworks (e.g., Jest, Mocha) Experience working ...

Full Stack Engineer

Hiring Organisation
Birl 🟣
Location
City of London, London, United Kingdom
across the e-commerce ecosystem Develop new features and infrastructure using Node.js, React, JavaScript, GCP Own and contribute to the technical roadmap Maintain high code quality, performance, and reliability Communicate effectively with both technical and non-technical stakeholders Implement data optimisation strategies Apply AI/ML technologies … where relevant Troubleshoot and resolve issues across systems and integrations Improve and participate in agile development practices Conduct code reviews and mentor junior engineers Skills & Qualifications Degree in Computer Science, Engineering, or similar 7+ years full-stack experience with Node.js, React, JavaScript Experience integrating e-commerce platforms (e.g., Shopify ...

Senior Software Engineer

Hiring Organisation
GTreasury
Location
London Area, United Kingdom
Your Impact Design and build scalable, resilient cloud applications Take ownership of features end-to-end (you build it, you run it) Influence architecture, code quality, and engineering standards Mentor engineers and contribute to technical decision-making Support production systems in a mature DevOps environment 👀 What … based systems Experience building cloud-native solutions in Azure Confidence working in complex, distributed systems A collaborative mindset and passion for clean, maintainable code 🎁 Why This Role? High visibility and real technical ownership Complex domain challenges Collaborative, low-ego engineering culture Hybrid working (10 days per month in office ...

Senior C# Developer - Londin - Perm

Hiring Organisation
INFUSED SOLUTIONS LIMITED
Location
London, United Kingdom
Employment Type
Permanent
Salary
£80,000
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 ...

Palantir Consultant

Hiring Organisation
Staffworx Limited
Location
Central London, London, United Kingdom
Employment Type
Permanent
grow into owning areas end-to-end. Core Responsibilities Foundry Solution Delivery Contribute to solution design and implementation across: Data integration (Pipeline Builder/code-based pipelines, connectors, incremental loads). Ontology modelling (objects, relationships, basic semantics, versioning). Application layer (Workshop, Code Repositories, OSDK/APIs, Actions … sessions, hands-on labs and onboarding for analysts and power users. Share learning, debugging tips and best practices with peers. Follow internal standards for code quality, naming conventions, testing and design patterns and contribute improvements as you gain experience. Required Experience Commercial experience working with Palantir Foundry ...

Full Stack Developer

Hiring Organisation
BioTalent
Location
City of London, London, United Kingdom
tests, integrating with CI workflows Collaborate using Git-based workflows and contribute to shared codebases Take ownership of features from design through deployment Ensure code quality, reliability, and maintainability across the stack You Will Bring 2+ years of professional experience as a software engineer Strong Python skills ...

Lead Developer - C#/Angular - Commodities

Hiring Organisation
Harvey Nash
Location
City of London, London, United Kingdom
Scrum team Designing, building and enhancing full‐stack applications used across global trading desks Contributing to solution architecture and engineering strategy Driving best practices, code quality, testing standards and CI/CD discipline Mentoring and supporting developers across the full SDLC Experience required: Circa 10+ years’ software ...

Senior Ruby Developer - EU Based

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
within a cloud-native architecture Collaborating with product, cloud, and DevOps teams to deliver high-impact functionality Contributing to technical decisions, best practices, and code quality improvements Integrating third-party services and APIs within a complex insurance environment Supporting ongoing migration, modernisation, and cloud optimisation initiatives What ...

Full Stack Engineer

Hiring Organisation
Hera
Location
London Area, United Kingdom
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 ...

Senior Mobile Engineer - React Native

Hiring Organisation
Onsera Health
Location
London Area, United Kingdom
closely with product and design teams to translate user requirements into technical specifications and implementation plans Establish mobile development best practices, including testing strategies, code quality standards, and deployment pipelines Take ownership of technical decisions and proactively identify opportunities to improve app performance, reliability, and user experience ...

Frontend Developer

Hiring Organisation
Stealth iT Consulting
Location
City of London, London, United Kingdom
back-end engineers, designers and product teams to deliver accessible, secure and scalable front-end solutions. Key Responsibilities Design and develop responsive, high-quality user interfaces Build rich web applications using React and/or Angular … Collaborate with back-end teams to integrate with RESTful APIs Ensure applications meet accessibility and usability standards Apply best practices around performance, security and code quality Contribute to UI architecture, reusable components and design systems Work collaboratively using Git-based version control Skills & Experience Required Strong experience ...

Technology Lead

Hiring Organisation
Addition
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
storage solutions Ensure accurate, reliable, and timely data for reporting and analytics Support business intelligence, dashboards, and operational reporting needs Establish data governance, quality, and security standards Development & Platforms Oversee development across a range … technologies including HTML, C++, and modern web frameworks Provide technical oversight for websites, portals, and Learning Management Systems (LMS) Ensure high standards of code quality, performance, accessibility, and security Review architecture, code, and integrations to ensure maintainability and scalability LMS & Website Management Lead the technical development ...

Senior Software Engineer

Hiring Organisation
Tiro Partners
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £120000/annum
Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 Join a Service Modernisation team driving AI-first software development in financial services. This … performance and reliability Build AI-powered tooling, including MCP servers and AI-assisted CI/CD pipelines Demonstrate how AI transforms developer productivity and code quality What We're Looking For 6+ years' backend engineering experience (Java) Proven experience modernising production systems at scale Hands ...