15 of 15 Contract Clean Code Jobs in the UK

Backend Engineer

Hiring Organisation
eTeam Workforce Limited
Location
Sheffield, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 384 Daily
applications, services, and RESTful APIs primarily using Python. Deliver high-quality, production-ready software through modern engineering practices including version control, automated testing, peer code reviews, CI/CD pipelines, and technical documentation. Integrate Back End services with enterprise platforms, data sources, and third-party APIs, ensuring effective authentication … Django. Experience using testing frameworks such as pytest and working with package/dependency management tools. Strong understanding of software engineering principles including clean code, object-oriented and/or functional programming, debugging, testing strategies, API design, and source control. Experience working with both relational and NoSQL databases ...

Senior Backend Engineer (Java)

Hiring Organisation
Randstad Technologies Recruitment
Location
Manchester, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day Inside IR35 via Umbrella
modern AI tooling (Claude and Codex) to accelerate delivery. You'll work cross-functionally with product managers, frontend engineers, and platform teams while elevating code quality and mentoring fellow engineers. Core Responsibilities Architecture & API Design: Build and maintain scalable, fault-tolerant backend microservices and REST APIs. Technical Leadership: Lead … establish engineering best practices. System Operations & Reliability: Troubleshoot complex production issues, conduct root-cause analysis, and enhance observability, logging, and performance. Delivery & Quality: Write clean, testable Java code, conduct constructive code reviews, and drive automated testing (unit, integration, and E2E). DevOps & Collaboration: Partner with infrastructure teams ...

Java Developer

Hiring Organisation
DCV Technologies
Location
Halifax, Calderdale, West Yorkshire, United Kingdom
Employment Type
Contract
using Java and Quarkus. · Develop responsive, accessible and reusable user-interface components using React. · Build reliable and maintainable RESTful APIs and integration services. · Apply clean-code principles, recognised design patterns and modular software-design practices. · Produce code that is readable, testable, secure and suitable for long-term … maintenance. · Perform code reviews and provide constructive technical feedback to engineering colleagues. · Diagnose and resolve complex application, integration and performance issues. · Maintain appropriate technical documentation, including application designs, API specifications, deployment instructions and operational support information. ...

Java Developer

Hiring Organisation
Denizns Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400/day
Design, develop and deploy RESTful and SOAP microservices using Spring Boot Work with cross-functional teams to analyse requirements and deliver features Write clean, well-documented code following SOLID principles Carry out unit and integration testing and build automated test suites Take part in code reviews ...

Android Engineer

Hiring Organisation
Korn Ferry
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 400 Daily
Android applications. Build scalable, performant solutions using contemporary Android technologies. Collaborate with product, design, QA and engineering teams throughout the development life cycle. Write clean, maintainable and testable code. Debug, optimise and enhance application performance. Develop and maintain automated testing solutions. Contribute to CI/CD pipelines and release ...

Senior Java Engineer

Hiring Organisation
Forward Role
Location
Manchester, North West, United Kingdom
Employment Type
Contract
doing Building event-driven services and integrations on Kafka Deploying and running services on AWS, working closely with DevOps on infrastructure and pipelines Writing clean, tested, production-ready code, and setting the standard through code review Working directly with product and engineering leads to turn requirements into … relational databases (PostgreSQL or similar) Solid testing discipline: JUnit, Mockito, integration testing (Testcontainers a plus) CI/CD, Docker, and comfort with infrastructure-as-code (Terraform or CloudFormation) Previous contract experience, landing quickly and delivering on a new build Hands-on use of AI-assisted development in your daily ...

iOS Developer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £420 per day + Inside IR35
into robust application functionality. Contribute to application architecture and technical design decisions. Integrate mobile applications with RESTful APIs and backend services. Software Engineering Write clean, maintainable, and testable code following industry best practices. Perform code reviews and provide constructive technical feedback. Troubleshoot, debug, and resolve application defects. … UIKit Xcode Experience developing applications for iPhone and iPad devices. Understanding of Apple Human Interface Guidelines (HIG). Mobile Architecture Experience implementing: MVVM MVC Clean Architecture Knowledge of dependency injection patterns. Understanding of reusable component-based development. API & Data Integration Experience consuming RESTful APIs. JSON parsing and data mapping. ...

Senior Frontend Developer

Hiring Organisation
Rullion Managed Services
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£650/day
responsive web applications using React.js, and TypeScript. Collaborate with UX/UI designers to implement modern, intuitive, and visually appealing user interfaces. Write clean, maintainable, and efficient code while adhering to best practices. Optimize applications for maximum performance across a wide range of devices and browsers. Participate … code reviews and maintain a high level of code quality. Troubleshoot and debug issues in both development and production environments. Contribute to architectural decisions and collaborate with other engineers on overall application design. Ensure the scalability and security of applications by following best development practices. Stay ...

UI / NextJS Developer

Hiring Organisation
DNS Info Ltd
Location
Glasgow, Glasgow City, City of Glasgow, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £450/day Inside IR35
other Next.js capabilities where appropriate. Develop reusable design-system components and maintain consistency across applications. Troubleshoot UI issues and optimize Front End performance. Write clean, scalable and testable code using TypeScript/JavaScript. Participate in code reviews and contribute to Front End architecture and technical decisions. Required ...

Backend Java Developer | Public Sector | Inside IR35 | 6 months

Hiring Organisation
Opus Recruitment Solutions
Location
United Kingdom
Employment Type
Contract
Contract Rate
£280 - £400/day
wider delivery teams to troubleshoot issues and deliver effective solutions. For more senior positions, enable other developers through technical guidance, knowledge sharing and code reviews, while providing advice on technical approach and engineering best practice. Essential Experience Strong commercial experience working as a Backend Java Developer. Experience designing … developing enterprise-scale Java applications and services. Strong understanding of software engineering principles, clean coding and development best practice. Experience with automated testing and unit testing. Strong debugging, troubleshooting and problem-solving skills. Experience working within Agile, multidisciplinary technology teams. For senior-level opportunities, experience enabling and supporting other ...

Scala Developer

Hiring Organisation
Boss Professional Services
Location
United Kingdom
Employment Type
Contract
Contract Rate
GBP 570 Daily
Framework). Agile Delivery: Collaborate within multidisciplinary Agile teams. Work with developers, testers, product managers, and other roles in Agile environments. Quality & Testing: Write clean, testable, and efficient code to build front and Back End services and APIs. Operations: Support and operate production services throughout the full development ...

Scala Developer - MUST HAVE ACTIVE SC CLEARANCE - Telford and Remote - £606 per day

Hiring Organisation
Octopus Computer Associates
Location
Telford, Shropshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
Framework). Agile Delivery: Collaborate within multidisciplinary Agile teams. Work with developers, testers, product managers, and other roles in Agile environments. Quality & Testing: Write clean, testable, and efficient code to build front and Back End services and APIs. Operations: Support and operate production services throughout the full development ...

Scala Developer

Hiring Organisation
LA International Computer Consultants Ltd
Location
Telford, Shropshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 525 - 625 Daily
Framework). Agile Delivery: Collaborate within multidisciplinary Agile teams. Work with developers, testers, product managers, and other roles in Agile environments. Quality & Testing: Write clean, testable, and efficient code to build front and Back End services and APIs. Operations: Support and operate production services throughout the full development ...

Mobile Android & iOS Engineer

Hiring Organisation
Ixceed Solutions Ltd
Location
Burgess Hill, West Sussex, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £270 to £320 per day
Responsibilities Design, develop, test, and maintain high-quality mobile applications for Android or iOS. Develop clean, scalable, and maintainable code following industry best practices. Integrate REST APIs, third-party SDKs, payment gateways, analytics, and other external services. Collaborate with product managers, UI/UX designers, backend developers … engineers. Debug issues, identify performance bottlenecks, and implement appropriate solutions. Participate in code reviews and contribute to improving development standards. Ensure applications are secure, responsive, and optimized for different devices and screen sizes. Write unit and integration tests where applicable. Troubleshoot production issues and provide timely fixes. Stay updated ...

Mobile Android & iOS Engineer

Hiring Organisation
Ixceed Solutions Ltd
Location
Burgess Hill, Sussex, United Kingdom
Employment Type
Contract
Contract Rate
GBP 270 - 320 Daily
Responsibilities Design, develop, test, and maintain high-quality mobile applications for Android or iOS. Develop clean, scalable, and maintainable code following industry best practices. Integrate REST APIs, third-party SDKs, payment gateways, analytics, and other external services. Collaborate with product managers, UI/UX designers, backend developers ...