19 of 19 Contract Clean Code Jobs in England

Full Stack Developer (ReactJS & Java)

Hiring Organisation
KBC Technologies UK LTD
Location
Leeds, West Yorkshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Creating scalable REST APIs and microservices Writing clear and maintainable Swagger/OpenAPI documentation Producing Low-Level Designs (LLD) and shaping technical solutions Reviewing code and promoting engineering best practices Mentoring developers and contributing to a strong engineering culture Writing unit, integration, and automation tests to ensure quality Deploying … Java, Spring Boot, and Microservices Experience designing and consuming RESTful APIs Comfortable creating Swagger/OpenAPI specs Strong understanding of software design and clean code Experience with testing frameworks and automation Practical exposure to Azure and/or GCP Experience working with CI/CD pipelines A proactive ...

Full Stack Developer

Hiring Organisation
Reed
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£490 - £530 per day, Inc benefits
role: Develop and maintain front-end and back-end components of applications. Collaborate with project teams to design and implement functional, robust applications. Write clean, scalable code using Java, Python, and other relevant technologies. Integrate user-facing elements with server-side logic and functionality. Ensure the performance, quality ...

PySpark Developer

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract
complex SAS environments into scalable, AWS-native PySpark pipelines for a major financial services project. What You'll Do Modernize: Convert legacy SAS code into production-ready PySpark using automated tools and manual refactoring. Build: Design and fix high-performance ETL/ELT pipelines and data marts on AWS. … Working Knowledge): Ability to read and debug Base SAS/Macros to translate logic into Python. Engineering: Strong Python skills with a focus on clean code, modular design, and exception handling. Preferred Experience Background in Banking or Financial Services . How to Apply: If you are ready ...

Senior Test Engineer

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
Oversee testing activities for major project streams, ensuring high standards are met. Embed Quality: Collaborate with Architects and Devs to bake quality into the code-not just test it later. Drive Improvement: Identify gaps in our automation coverage and toolset, then fix them. Mentor: Guide junior engineers in best … practices, from clean code in scripts to effective manual exploratory testing. What You Bring Essential: Significant experience in software testing within structured development environments. Expertise in both manual and automated testing techniques. Strong knowledge of test automation frameworks and scripting. Proven experience leading testing activities on complex projects. ...

Automation Tester

Hiring Organisation
FDM Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
client is seeking an Automation Tester to play a pivotal role in driving real change in their processes to ensure they can release reliable code on a regular basis. There will be a core focus on reducing bugs post-release, rapidly increasing % test coverage and reducing the time … automated frameworks within the team to improve the speed and quality of software development by checking for scalability, reliability, consistency, and performance. Championing clean code and practices that make change easy, including peer reviewing your colleague’s code. Extending automation to include service provisioning, test data management, dashboarding ...

Java Developer

Hiring Organisation
Randstad Technologies Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £800/day
Expert: You understand how to leverage TransFICC to unify fragmented bond markets into a streamlined "One API" workflow. An Agile Craftsman: You believe in clean code, automated builds, and relentless profiling. Ready to outpace the market? Please apply ASAP or share your updated CV to yogeshwari. Sen @ randstaddigital. ...

Test Manager

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
Oversee testing activities for major project streams, ensuring high standards are met. Embed Quality: Collaborate with Architects and Devs to bake quality into the code-not just test it later. Drive Improvement: Identify gaps in our automation coverage and toolset, then fix them. Mentor: Guide junior engineers in best … practices, from clean code in scripts to effective manual exploratory testing. What You Bring Essential: Significant experience in software testing within structured development environments. Expertise in both manual and automated testing techniques. Strong knowledge of test automation frameworks and scripting. Proven experience leading testing activities on complex projects. ...

Contract Azure Data Engineer - £600/pd Outside IR35

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £600 per day
Responsibilities Analyse business processes, gather requirements, and document technical solutions. Design, develop, and deliver data and software solutions aligned to business goals. Produce clean, modular, testable code and support peer code reviews. Own the delivery lifecycle, remove technical blockers, and lead third-party developers when required. Contribute ...

Senior Backend Python Developer

Hiring Organisation
ARM
Location
Leeds, West Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £480/day
business logic, data access layers, and integrations with internal and external systems. Develop and enhance RESTful APIs, following defined contracts and API standards. Write clean, maintainable, well-tested code, adhering to agreed engineering best practices. Contribute unit and integration tests to ensure functional correctness and regression safety. Support … feature delivery by implementing backend components from pre-defined designs and tickets. Participate in code reviews, addressing feedback and continuously improving code quality. Troubleshoot backend issues using logs and diagnostics, escalating complex design concerns to onshore leads. Work within an Agile/Scrum team, contributing to sprint delivery ...

Senior AI Software Engineer

Hiring Organisation
Tec Partners
Location
Windsor, Berkshire, Eton, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £700/day
Amazon Lex, AWS Lambda and Large Language Models (LLMs). Collaborate with cross-functional teams to integrate new capabilities into contact centre platforms. Produce clean, efficient and maintainable code using TypeScript, modern JavaScript frameworks and Python. Champion DevOps best practice, including CI/CD pipelines, automated testing … infrastructure as code. Lead and contribute to code reviews, ensuring high standards of quality and engineering excellence. Troubleshoot and resolve complex technical issues across multiple layers of the technology stack. Stay informed of emerging technologies and industry trends to ensure solutions remain innovative and sustainable. Essential Skills and Experience ...

C# .NET Developer

Hiring Organisation
LHH Recruitment Solutions
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400.00 - £450.00 per hour
.NET frameworks. Collaborate with cross-functional teams to define, design, and ship new features. Troubleshoot, debug, and optimize existing applications to enhance performance. Write clean, maintainable code and contribute to code reviews. Stay updated with the latest industry trends and best practices in software development. ...

Contract Application Developer - C++/QT

Hiring Organisation
Verso Recruitment Group
Location
Colchester, Essex, United Kingdom
Employment Type
Contract
Contract Rate
£50.00 - £65.00/hour
robust, intuitive, and performance‑critical applications that interact directly with embedded systems. The environment is fast‑paced and collaborative, with a strong emphasis on clean code, hardware awareness, and reliable system behaviour. Key Responsibilities Develop and enhance GUI and application‑level features using C++ and Qt for embedded … automation, and integration scripts. Collaborate with embedded engineers, product teams, and test to refine requirements and deliver high‑quality software. Troubleshoot, debug, and optimise code for performance, memory usage, and hardware constraints. Support the full development lifecycle from design through to deployment on embedded targets. About You Strong commercial ...

Front End Developer

Hiring Organisation
Experis
Location
Croydon, London, United Kingdom
Employment Type
Contract
Contract Rate
£520 - £570/day
fast-paced engineering team working on modern, user-focused web applications. This role is hands-on and delivery-driven, with a strong emphasis on clean, scalable front-end development using React and TypeScript/JavaScript . You'll collaborate closely with backend developers, designers, and product stakeholders to build … responsive, high-quality user interfaces and improve overall user experience. Key Responsibilities Design, build, and maintain front-end applications using React Develop clean, maintainable code using TypeScript and JavaScript (browser-based) Work closely with UX/UI designers to translate designs into high-quality user interfaces Integrate front ...

Junior Java Developer

Hiring Organisation
Qualient Technology Solutions UK Limited
Location
Solihull, West Midlands (County), United Kingdom
Employment Type
Permanent, Contract
native AWS services like ECS, S3, Lambda, SQS, Step Functions. Certification: Expected to have AWS Certified DevOps Engineer Professional accreditation or above Responsibilities: Write clean, secure code using test-driven approach. Create reusable and open code. Collaborate with other developers. Fix service faults and maintain infrastructure. Apply modern ...

Databricks SME and AWS Data Engineer

Hiring Organisation
Experis
Location
Northampton, Northamptonshire, East Midlands, United Kingdom
Employment Type
Contract
Contract Rate
£460.00 - £480.00 per day
adept at working with large-scale datasets , S3 , Python , and data cataloguing tools . Familiarity with data engineering best practices is essential. Performance and Code Quality - candidate should demonstrate a strong commitment to building high-performance, scalable, and resilient distributed systems , with an emphasis on clean, maintainable … testable code . CI/CD Proficiency - Hands-on experience with CI/CD pipelines and tools (e.g., Jenkins, GitHub Actions, GitLab CI, etc.) for automated build, test, and deployment processes. Secure Development Practices - Awareness of secure coding standards , data protection principles, and experience working in regulated environments (especially ...

Senior MLOps & Platform Engineer

Hiring Organisation
Revoco Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 500 - 625 Daily
background in software engineering, platform, or infrastructure roles Experience working with cloud platforms and modern DevOps practices Solid programming skills with a focus on clean, scalable code Hands-on experience with databases in production environments Exposure to MLOps, ML platforms, or AI-powered systems (not necessarily research-heavy ...

PySpark Developer

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£300 - £350 per day
project, transitioning legacy data workflows into a high-performance AWS cloud environment. This is a hands-on technical role focused on converting legacy SAS code into production-ready PySpark pipelines within a complex financial services landscape. Key Responsibilities Code Conversion: Lead the end-to-end migration … code (Base SAS, Macros, DI Studio) to PySpark using automated tools (SAS2PY) and manual refactoring. Pipeline Engineering: Design, build, and troubleshoot complex ETL/ELT workflows and data marts on AWS. Performance Tuning: Optimise Spark workloads for execution efficiency, partitioning, and cost-effectiveness. Quality Assurance: Implement clean coding ...

Machine Learning Infrastructure Developer

Hiring Organisation
US TECH SOLUTIONS LIMITED
Location
Cambridgeshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£54.00 - £56.00 per hour
control, distributed compute clusters, data storage). Work collaboratively as part of a multifunctional team where communication, documentation, and teamwork are highly valued. Write clean, maintainable code and debug complex problems that span multiple systems. Coordinate with a large set of internal infrastructure and tooling teams to evaluate ...

Integration Engineer - Java 8, MQTT

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400.0 - £450.0 per day + £market rate (Outside IR35)
commercial Java 8 development experience Proven background with MQTT integrations Experience with PostgreSQL databases Comfortable working in SuSE Linux Enterprise environments Ability to deliver clean, testable, maintainable code Strong communication skills for customer interactions Nice to have: Flexibility to get to office Previous work on proof-of-concept ...