101 to 125 of 250 Clean Code Jobs in London

Lead Market Data Developer - Commodities

Hiring Organisation
Harvey Nash
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£1,000 - £1,200 per day
data or data management system components. Deep understanding of ETL/ELT workflows, data warehousing, and handling EOD/tick data. Strong engineering discipline-clean, testable, standardised code. Good knowledge of schema design and modern deployment/automation practices. Familiarity with Zema, Docker, and containerised environments is advantageous. Experience ...

Mobile Application Developer

Hiring Organisation
Primis
Location
Greater London, England, United Kingdom
doing: Building and improving mobile apps (Android and/or iOS) used by real customers Turning product requirements into polished, maintainable features Maintaining clean, testable code and contributing to code reviews Integrating with backend services and APIs Supporting performance, reliability, and UX improvements Bringing forward new ideas … mobile development Strong in JavaScript or TypeScript Experience working with REST APIs and JSON Exposure to Git workflows Track record of writing maintainable, readable code Desirable experience: Automated testing (unit, integration, or UI test frameworks) Android (Kotlin/Java) or iOS (Swift) development Cross-platform mobile frameworks (React Native ...

PHP Developer

Hiring Organisation
Travelfusion
Location
City of London, London, United Kingdom
company, rapidly growing profitable business with 225 employees based in London, Shanghai and Thessaloniki. We are seeking an experienced PHP Developer who can write clean, fast code to a high standard, in a timely and scalable way that will help take our ideas from conception to reality. What … advancing existing systems Use the best development techniques tailored to the task in hand Give accurate estimates of the technical requirements to produce code components, frameworks and deliver these Reporting status, risks and issues to the Development Lead Assisting with testing of software components and development of automated test ...

PHP Developer

Hiring Organisation
Travelfusion
Location
London Area, United Kingdom
company, rapidly growing profitable business with 225 employees based in London, Shanghai and Thessaloniki. We are seeking an experienced PHP Developer who can write clean, fast code to a high standard, in a timely and scalable way that will help take our ideas from conception to reality. What … advancing existing systems Use the best development techniques tailored to the task in hand Give accurate estimates of the technical requirements to produce code components, frameworks and deliver these Reporting status, risks and issues to the Development Lead Assisting with testing of software components and development of automated test ...

Senior Java Software Engineer

Hiring Organisation
Arrows
Location
City of London, London, United Kingdom
Java (up to Java 21). Building microservices with Spring Boot and related frameworks. Developing and maintaining RESTful APIs and event-driven systems. Writing clean, testable code and following TDD principles. Working closely with DevOps, Product, and QA teams to deliver high-quality solutions. Deploying and supporting services ...

Senior Java Software Engineer

Hiring Organisation
Arrows
Location
London Area, United Kingdom
Java (up to Java 21). Building microservices with Spring Boot and related frameworks. Developing and maintaining RESTful APIs and event-driven systems. Writing clean, testable code and following TDD principles. Working closely with DevOps, Product, and QA teams to deliver high-quality solutions. Deploying and supporting services ...

Full Stack Engineer

Hiring Organisation
Propel
Location
London, UK
Employment Type
Full-time
consuming RESTful APIs (FastAPI) • Working with relational and NoSQL databases • Supporting React frontend development (initially) • Collaborating closely with product, frontend, and DevOps • Writing clean, maintainable code and contributing to reviews • Following best practices around CI/CD and automated testing Requirements: • 3+ years back-end engineering experience • Strong ...

Full Stack Engineer

Hiring Organisation
Propel
Location
South London, UK
Employment Type
Full-time
consuming RESTful APIs (FastAPI) • Working with relational and NoSQL databases • Supporting React frontend development (initially) • Collaborating closely with product, frontend, and DevOps • Writing clean, maintainable code and contributing to reviews • Following best practices around CI/CD and automated testing Requirements: • 3+ years back-end engineering experience • Strong ...

Senior Software Developer | Webigence and Spark Travel

Hiring Organisation
Spark Travel
Location
London, UK
Employment Type
Full-time
TypeScript) based frontends, SQL Server, Cosmos DB. Own mission‐critical modules such as pricing engines, itinerary or form builders, client proposal app, etc. Write clean, tested code; automate everything from CI/CD pipelines (Azure DevOps/GitHub Actions) to performance benchmarks. Investigate and diagnose issues and perform ...

Senior Software Developer | Webigence and Spark Travel

Hiring Organisation
Spark Travel
Location
South London, UK
Employment Type
Full-time
TypeScript) based frontends, SQL Server, Cosmos DB. Own mission‐critical modules such as pricing engines, itinerary or form builders, client proposal app, etc. Write clean, tested code; automate everything from CI/CD pipelines (Azure DevOps/GitHub Actions) to performance benchmarks. Investigate and diagnose issues and perform ...

Senior Business Central Developer

Hiring Organisation
Nigel Frank International
Location
London, United Kingdom
Employment Type
Permanent
Salary
£70000 - £75000/annum
tech and pushes constant improvement across all client deliveries. What you will do * Lead development across Business Central with a strong focus on clean code and best practice * Build new features and extend existing functionality across finance supply chain manufacturing and service modules * Work closely with consultants ...

Senior Business Central Developer

Hiring Organisation
Nigel Frank International
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £75,000 per annum
tech and pushes constant improvement across all client deliveries. What you will do * Lead development across Business Central with a strong focus on clean code and best practice * Build new features and extend existing functionality across finance supply chain manufacturing and service modules * Work closely with consultants ...

Automation QA Engineer

Hiring Organisation
Avanti
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 per annum
automation experience using Selenium WebDriver • Experience working inside a POM framework • Ability to debug both UI and API issues • Strong attention to detail and clean code practices Beneficial: • Exposure to CI/CD pipelines • Experience refining or extending existing test frameworks Working Pattern & Location • Fully onsite, Monday ...

Lead Data Scientist

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Any
Salary
GBP Annual
series forecasting, regression, mathematical optimisation). Experience leading or managing data scientists on impactful ML/optimisation projects. Excellent Python and SQL skills, with clean, maintainable code. Practical MLOps experience (deployment, monitoring, life cycle management) in a cloud environment (AWS or similar). Comfortable working with large, imperfect datasets ...

Lead Data Scientist

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
series forecasting, regression, mathematical optimisation). Experience leading or managing data scientists on impactful ML/optimisation projects. Excellent Python and SQL skills, with clean, maintainable code. Practical MLOps experience (deployment, monitoring, lifecycle management) in a cloud environment (AWS or similar). Comfortable working with large, imperfect datasets ...

Mid-Level Full Stack Engineer | Audio Intelligence IoT Scale-up | Well Funded - Tech-for-good | TypeScript/Next.js/Node.js | £50K - £65K + Equity | Hybrid 3 Days LDN with Work From Anywhere Benefits

Hiring Organisation
Owen Thomas | Pending B Corp™
Location
City of London, London, United Kingdom
implement end-to-end features for dashboards and customer-facing tools. Contribute to architecture discussions, suggest improvements, and help optimize system performance. Write clean, testable, and maintainable code. Collaborate in an agile environment, participating in sprint planning, code reviews, and team knowledge-sharing sessions. Tech Stack TypeScript Next.js … Experience with Docker, REST APIs, and cloud services (AWS, GCP, or Azure). A pragmatic problem solver who can balance delivering features with maintaining code quality. Strong communication skills and ability to collaborate across teams. Computer Science/Mathematics degrees from good universities Nice to haves; Python experience. ...

Mid-Level Full Stack Engineer | Audio Intelligence IoT Scale-up | Well Funded - Tech-for-good | TypeScript/Next.js/Node.js | £50K - £65K + Equity | Hybrid 3 Days LDN with Work From Anywhere Benefits

Hiring Organisation
Owen Thomas | Pending B Corp™
Location
London Area, United Kingdom
implement end-to-end features for dashboards and customer-facing tools. Contribute to architecture discussions, suggest improvements, and help optimize system performance. Write clean, testable, and maintainable code. Collaborate in an agile environment, participating in sprint planning, code reviews, and team knowledge-sharing sessions. Tech Stack TypeScript Next.js … Experience with Docker, REST APIs, and cloud services (AWS, GCP, or Azure). A pragmatic problem solver who can balance delivering features with maintaining code quality. Strong communication skills and ability to collaborate across teams. Computer Science/Mathematics degrees from good universities Nice to haves; Python experience. ...

Senior Software Engineer / Tech Lead, Python, TypeScript, React- Elite funded Fintech

Hiring Organisation
Austin Werner
Location
City of London, London, United Kingdom
platform teams to deliver high-impact features that directly improve user financial wellbeing. This is a hands-on role for an engineer who values clean architecture, measurable outcomes, and meaningful user impact. What You’ll Do: Design and implement distributed systems that are resilient, scalable, and secure. Own technical … product managers, designers, and analysts to build features that deliver tangible value. Contribute to technical strategy , support platform scalability, and lead by example through code reviews and mentoring. Maintain a user-centred mindset , constantly measuring and iterating on how engineering decisions translate into product value. Technical Environment: Languages & Frameworks ...

Senior Software Engineer / Tech Lead, Python, TypeScript, React- Elite funded Fintech

Hiring Organisation
Austin Werner
Location
London Area, United Kingdom
platform teams to deliver high-impact features that directly improve user financial wellbeing. This is a hands-on role for an engineer who values clean architecture, measurable outcomes, and meaningful user impact. What You’ll Do: Design and implement distributed systems that are resilient, scalable, and secure. Own technical … product managers, designers, and analysts to build features that deliver tangible value. Contribute to technical strategy , support platform scalability, and lead by example through code reviews and mentoring. Maintain a user-centred mindset , constantly measuring and iterating on how engineering decisions translate into product value. Technical Environment: Languages & Frameworks ...

Software Developer (1-4 year) | 55,000–77,000 | Hybrid (London / Remote)

Hiring Organisation
IT Graduate Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £75,000 per annum, OTE
Ready to build software that actually matters? Join a team where you’ll be solving real-world problems from day one — not just writing code in the corner. We’re looking for an ambitious Software Developer who loves tackling technical challenges, learning fast, and working with smart, supportive engineers. … Stack Engineer role within 12–24 months. What You’ll Do Design and build high-performance software used by thousands of users daily Develop clean, efficient, and scalable code in Python, C++ or JavaScript Collaborate with engineers, data scientists, and product teams on exciting new features Contribute ...

Graduate Software Developer | 50,000–60,000 | Hybrid (London / Remote)

Hiring Organisation
IT Graduate Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum, OTE
Ready to build software that actually matters? Join a team where you’ll be solving real-world problems from day one — not just writing code in the corner. We’re looking for an ambitious Graduate Software Developer who loves tackling technical challenges, learning fast, and working with smart, supportive … Stack Engineer role within 12–24 months. What You’ll Do Design and build high-performance software used by thousands of users daily Develop clean, efficient, and scalable code in Python, C++ or JavaScript Collaborate with engineers, data scientists, and product teams on exciting new features Contribute ...

Full Stack Engineer (Angular +

Hiring Organisation
MYT Shutters
Location
South London, UK
Employment Type
Full-time
consistent, and maintainable. This is a hands-on engineering position suited to someone who understands how data and logic flow through a system, writes clean and well-structured code, and enjoys solving complex, real-world operational challenges. Tech Stack · Frontend: Angular, RxJS, TypeScript · Backend: Node.js, GraphQL, PostgreSQL, Apollo … optimise relational database schemas and SQL queries. · Work with the team to refine requirements, clarify tickets, and ensure accurate implementation of functionality · Write clean, testable, and maintainable code · Integrate with and enhance GraphQL APIs and backend services · Contribute to GraphQL schema design and resolver implementation · Collaborate on improving ...

Full Stack Engineer (Angular +

Hiring Organisation
MYT Shutters
Location
London, UK
Employment Type
Full-time
consistent, and maintainable. This is a hands-on engineering position suited to someone who understands how data and logic flow through a system, writes clean and well-structured code, and enjoys solving complex, real-world operational challenges. Tech Stack · Frontend: Angular, RxJS, TypeScript · Backend: Node.js, GraphQL, PostgreSQL, Apollo … optimise relational database schemas and SQL queries. · Work with the team to refine requirements, clarify tickets, and ensure accurate implementation of functionality · Write clean, testable, and maintainable code · Integrate with and enhance GraphQL APIs and backend services · Contribute to GraphQL schema design and resolver implementation · Collaborate on improving ...

Frontend Developer

Hiring Organisation
Block MB
Location
Greater London, England, United Kingdom
with real ownership of the front‐end stack. You’ll evolve and scale existing platforms, lead on new greenfield builds and set standards for code quality, performance and front‐end architecture. What you’ll do Design, build and ship modern PWAs, web apps and sites using Vue.js, ES6, HTML …/CSS. Create reusable components and libraries, and optimise apps for speed, scalability and reliability. Own pull requests, code reviews and front‐end best practices, keeping security and performance front of mind. Spot and fix performance bottlenecks across web and mobile experiences. Mentor other developers and help drive ...

Principal (Director) Software Engineer - Python, Typescript, React, AWS - Elite funded Fintech

Hiring Organisation
Austin Werner
Location
City of London, London, United Kingdom
platform teams to deliver high-impact features that directly improve user financial wellbeing. This is a hands-on role for an engineer who values clean architecture, measurable outcomes, and meaningful user impact. What You’ll Do: Design and implement distributed systems that are resilient, scalable, and secure. Own technical … product managers, designers, and analysts to build features that deliver tangible value. Contribute to technical strategy , support platform scalability, and lead by example through code reviews and mentoring. Maintain a user-centred mindset , constantly measuring and iterating on how engineering decisions translate into product value. Technical Environment: Languages & Frameworks ...