26 to 50 of 81 Clean Code Jobs in London

Machine Learning Engineer Python AWS MLOps

Hiring Organisation
Client Server
Location
East London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
around 80% of your time spent building and maintaining ML infrastructure, deploying and monitoring models, developing CI/CD pipelines, improving MLOps processes, refactoring code and adding new capabilities to existing ML services. You'll also gain exposure to model development, with plenty of opportunity to grow your data … role with experience of building and maintaining scalable data pipelines and ML platforms You have a strong understanding of software engineering best practices (clean code, SOLID principles, design patterns) combined with Python coding skills You have AWS experience You're able to dig into system performance to optimise ...

Ruby Developer

Hiring Organisation
Proactive Appointments
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 80,000 Annual
optimisation, and API design will be essential as you contribute to ongoing development projects. If you enjoy collaborating in Agile/Scrum environments, value clean code, and are eager to work with modern tooling, cloud services, and containerised deployments, we'd love to hear from you. Key Skills ...

Senior Quant/AI Developer, Global Markets

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
workflows within the company’s proprietary cloud-based quantitative analytics platform (ACQA), working closely with Trading, Structuring, Sales, Quant, and IT partners globally. Clean code, curiosity and the ability to build relationships and communicate ideas is crucial to the team delivering across a broad range of problems. Qualifications ...

Senior Android Developer

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £90000/annum Bonus and Benefits
doing Developing new features using Kotlin and Jetpack Compose. Taking ownership of technical decisions and helping shape the future of the Android platform. Writing clean, scalable and maintainable code. Working with modern engineering practices including TDD and CI/CD. Collaborating with designers to create polished, user-friendly experiences. ...

Senior Kotlin Engineer (XP, GCP) – Investment Banking – London

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
test‐driven development, and continuous refactoring. Engineers are expected to contribute across development, integration, and production support, collaborating closely to maintain high standards of code quality, system reliability, and performance. Responsibilities Engineers in this role: Work primarily in mobs, sharing ownership of design and code Build, test … driven architectures Deep familiarity with XP practices, including mob programming as a primary way of working, test‐driven development (TDD), and continuous refactoring and clean code principles Cloud experience with GCP, including GKE and/or Cloud Run, Cloud SQL and Memory store, Artifact Registry and Cloud Logging ...

Senior Kotlin/Scala Engineer

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £600/day Inside IR35
/support, with significant scope to influence system design and evolution. Role Responsibilities Design, build, and evolve core distributed services Deliver high-quality code with strong test coverage and reliability Contribute to secure system design and implementation Work closely with engineers and stakeholders to define solutions Participate in code … understanding of: o Type systems o Concurrency o Functional and/or object-oriented programming Experience building distributed backend systems Strong engineering practices: o Clean code o Testing (unit + integration) o CI/CD Tech Environment Scala/Kotlin Python (supporting components) Distributed systems architecture CI/ ...

Senior Site Reliability Engineer - Python

Hiring Organisation
Inspire People
Location
South West London, London, United Kingdom
Employment Type
Permanent, Part Time, Work From Home
Salary
£80,000
thousands of users. As a Senior Site Reliability Engineer you will: Build and maintain shared service products enabling developers to work more efficiently. Write clean, maintainable and well-tested code to support platform and tooling development. Work closely with development teams to provide and improve platform tooling, including … monitoring, logging, metrics, dashboards and CI/CD pipelines. Build, maintain and improve reliable, secure and scalable cloud-based infrastructure using infrastructure-as-code approaches. Support teams to adopt Site Reliability Engineering practices, including Service Level Indicators (SLIs), Service Level Objectives (SLOs) and error budgets. Contribute to observability across ...

Senior Site Reliability Engineer - Python

Hiring Organisation
Inspire People
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£67,867 - £83,778 per annum, Pro-rata, Inc benefits
thousands of users. As a Senior Site Reliability Engineer you will: Build and maintain shared service products enabling developers to work more efficiently. Write clean, maintainable and well-tested code to support platform and tooling development. Work closely with development teams to provide and improve platform tooling, including … monitoring, logging, metrics, dashboards and CI/CD pipelines. Build, maintain and improve reliable, secure and scalable cloud-based infrastructure using infrastructure-as-code approaches. Support teams to adopt Site Reliability Engineering practices, including Service Level Indicators (SLIs), Service Level Objectives (SLOs) and error budgets. Contribute to observability across ...

Senior Software Engineer II - Assets

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
technical foundations, brokerage infrastructure, and trading interfaces from the ground up.The Tech: You aren't just shipping features; you are shaping the strategy and code for a brand-new pillar of the Wise ecosystem.Why this is UniqueProduct Engineering Culture: We don't just hire "coders." We hire owners. … teamsExperience in developing web applications and distributed systems in a production environmentExperience with common design and architectural patterns coupled with a passion for writing clean code that is performant and well testedKnowledge of Java and Spring boot and experience with a messaging system, like Kafka, is a plus... ...

Senior Software Engineer II - Assets

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
foundations, brokerage infrastructure, and trading interfaces from the ground up. The Tech: You aren't just shipping features; you are shaping the strategy and code for a brand-new pillar of the Wise ecosystem. Why this is Unique Product Engineering Culture: We don't just hire "coders." We hire … developing web applications and distributed systems in a production environment Experience with common design and architectural patterns coupled with a passion for writing clean code that is performant and well tested Knowledge of Java and Spring boot and experience with a messaging system, like Kafka, is a plus... ...

Graduate Software Engineer (Full Stack)

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £45,000 per annum
solutions Tackle meaningful, end-to-end challenges across the stack Influence platform architecture and engineering practices Maintain strong standards through testing, peer reviews, and clean code Contribute to product and team direction in a high-growth environment Ideal Candidate 1-3 years of full-stack engineering experience Comfortable ...

Data Engineering Manager

Hiring Organisation
Skyscanner
Location
Greater London, United Kingdom
Employment Type
Full Time
understand distributed systems and cloud platforms, and how to make them work efficiently at scale. Quality-driven: You care about doing things well - from clean code to reliable pipelines and solid operational practices. Collaborative by nature: You work brilliantly across disciplines and know how to align teams around ...

Research Engineer, Machine Learning – Paris/London/Zurich/Warsaw

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
solutions. Our comprehensive AI platform is designed to meet enterprise as well as personal needs. Our offerings include Le Chat, La Plateforme, Mistral Code and Mistral Compute – a suite that brings frontier intelligence to end-users. We are a dynamic, collaborative team passionate about AI and its potential … mistral.ai/careers. Mistral AI participates in the E-Verify program Role Summary About the Research Engineering team. The team spans Platform (shared infra & clean code) and Embedded (inside research squads). Engineers can move along the research↔production spectrum as needs or interests evolve. Location Paris/ ...

Remote Full Stack Developer.NET 8 / ReactJS 6

Hiring Organisation
Pyramid8
Location
London, UK
Employment Type
Full-time
SQL. Core Skills & Experience Backend: C# with .NET 8 Building and maintaining RESTful APIs SQL Server - strong query skills, stored procedures, indexing, performance tuning Clean architecture and separation of concerns Frontend: ReactJS v6 TypeScript (strict mode) React Router, Redux (or similar state management) SCSS, CSS Modules, normalize.css Testing: Backend … xUnit or equivalent for unit/integration tests Frontend: Jest, React Testing Library Writing clean, testable code with good coverage General: Git and feature-branch workflows Jira (or similar tools) Agile development practices Ability to work independently in a remote setting Nice to Haves: Experience with SSO integration ...

Software Developer - Risk Data Pipelines

Hiring Organisation
Ncounter Limited
Location
EC2, Barbican, Greater London, United Kingdom
Employment Type
Permanent
Salary
£180000 - £220000/annum plus Bonus & Package
software engineering position for someone who enjoys building production-grade data systems and cares as much about data reliability as they do about clean code. Key Responsibilities Develop and maintain production data pipelines supporting risk analytics platforms. Build reliable, recoverable, and observable data workflows. Improve the quality, freshness ...

Technical Lead

Hiring Organisation
Halian Technology Limited
Location
South West London, London, United Kingdom
Employment Type
Permanent
week Salary: £125,000 + Benefits/Bonus Are you the kind of tech leader who still loves to build? The one who writes code, architects solutions, mentors engineers and still gets a buzz from seeing it all come to life? Our client is looking for a Hands … record of delivering digital identity or loyalty solutions at scale. Deep technical expertise in Azure, cloud architecture, APIs, and modern engineering. A love for clean code, smart systems, and solving tough problems. Passion for using AI to enhance development from automation to insight. The confidence to lead from ...

Development Manager

Hiring Organisation
Halian Technology Limited
Location
South West London, London, United Kingdom
Employment Type
Permanent
week Salary: £125,000 + Benefits/Bonus Are you the kind of tech leader who still loves to build? The one who writes code, architects solutions, mentors engineers and still gets a buzz from seeing it all come to life? Our client is looking for a Hands … record of delivering digital identity or loyalty solutions at scale. Deep technical expertise in Azure, cloud architecture, APIs, and modern engineering. A love for clean code, smart systems, and solving tough problems. Passion for using AI to enhance development from automation to insight. The confidence to lead from ...

Development Manager

Hiring Organisation
17918
Location
London, United Kingdom
week Salary: £125,000 + Benefits/Bonus Are you the kind of tech leader who still loves to build? The one who writes code, architects solutions, mentors engineers and still gets a buzz from seeing it all come to life? Our client is looking for a Hands … record of delivering digital identity or loyalty solutions at scale. Deep technical expertise in Azure, cloud architecture, APIs, and modern engineering. A love for clean code, smart systems, and solving tough problems. Passion for using AI to enhance development from automation to insight. The confidence to lead from ...

Software Engineer

Hiring Organisation
Centrica - CHP
Location
Hayes, London, United Kingdom
Employment Type
Permanent, Work From Home
build it, you run it" culture focused on reliability, performance, and continuous improvement. Collaborate closely with engineers, product teams, and stakeholders, sharing knowledge, reviewing code, and delivering high-quality solutions together. Contribute to Agile delivery practices using GitHub and Scrumban, managing tasks effectively while maintaining clean, well-documented ...

Digital Developer Senior

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
stack features using Python and Django Act as a senior technical lead within a multi‐disciplinary squad (Business Analysis, User‐Centred Design, Engineering) Write clean, secure, and maintainable code using test‐driven development principles Design and deliver scalable, resilient, and high‐performing systems aligned to modern engineering standards ...

Python Back-end Developer

Hiring Organisation
Initialize
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £75,000 per annum
join this innovative and fast-growing AI tech. organisation! Skills/experience Strong commercial experience in Python backend development. Solid back-end Python experience (clean coding) Experience building APIs and working with cloud-native architectures. Good understanding of Docker, and scalable distributed systems . An Agile mindset and Experience … working in agile teams, using Github for CI/CD, branching, pull requests, and automated testing. Nice to have: Kubernetes Comfortable with VS Code , ideally with AI coding tools like Copilot or VS Code agents. Understanding/experience of cloud-native patterns, and scalable architecture. Experience with Azure ...

Digital Promotion Developer Freight

Hiring Organisation
Heathrow Personnel
Location
Hounslow, London, United Kingdom
Employment Type
Permanent
Salary
£40,000
workflows and RPA solutions to improve operational efficiency. Collaborate with stakeholders and analysts to gather requirements and translate business needs into technical solutions. Write clean, efficient, and maintainable code using Python, JavaScript, and SQL. Deploy, monitor, and support applications within cloud-based environments. Troubleshoot, debug, and resolve technical … issues across applications and systems. Participate in testing, code reviews, and continuous improvement initiatives. Create and maintain technical documentation for systems, processes, and deployments. Essential Skills & Experience Strong commercial experience with Python, JavaScript, and SQL. Experience working with back-end frameworks such as Flask, FastAPI, Node.js, or similar. Hands ...

SC Cleared Node.js Developer

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
Up to £560 per day + Inside IR-35
requirements into effective technical designs Building APIs and backend services using Node.js (REST, OpenAPI) Developing user-focused services, putting accessibility and usability first Writing clean, reusable, and maintainable code Working with shared/common government tech stacks (Node.js, PostgreSQL, Redis) Investigating and resolving technical issues across the stack … Ability to communicate with both technical and non-technical stakeholders Experience breaking down work, refining backlog items, and defining acceptance criteria Good understanding of clean coding principles and managing technical debt Knowledge of software architecture principles (layered design, microservices, separation of concerns) A user-focused mindset with experience building ...

Senior Java Developer

Hiring Organisation
Arc IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
technology with real, measurable impact on people's health outcomes. Key Responsibilities: Design and develop software features using Java, AWS and PostgreSQL Write clean, maintainable, well-tested code Participate in code reviews and QA processes Troubleshoot and resolve client-reported issues Contribute to technical documentation … Spring Security, Spring AMQP, Spring OAuth2) Advanced SQL, ideally PostgreSQL Cloud architecture experience, ideally AWS Strong security best-practice knowledge Version control, testing, code review experience Strong communication skills Able to work independently and mentor junior team members Desirable Skills: Ansible Terraform Docker Thymeleaf OIDC (OpenID Connect) RabbitMQ ...

Digital Promotion Manager

Hiring Organisation
Freightserve recruitment
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 35,000 - 40,000 Annual
solutions Develop and maintain back-end services, APIs, and automation workflows Build and maintain RPA (Robotic Process Automation) solutions to streamline business processes Write clean, well-documented code across Python, JavaScript, and SQL Deploy and manage applications within cloud environments, ensuring reliability and scalability Participate in code reviews, testing, and debugging to maintain high standards of quality Contribute to technical documentation covering architecture, processes, and code Essential Skills and Experience:- Solid proficiency in Python, JavaScript, and SQL Strong understanding of back-end frameworks (e.g. Flask, FastAPI, Node.js or similar) Experience working with cloud platforms (e.g. ...