1 to 25 of 26 Contract Clean Code Jobs

Senior Software Engineer

Hiring Organisation
Intelligent Steps
Location
London, United Kingdom
Employment Type
Contract
Looking for a Senior Java Developer that has worked with Kotlin. The ideal candidate should be passionate about clean code and scalable solutions. This opportunity will allow you to design robust Microservices Architecture, within an automated data-heavy environment. This will be an initial 6 month contract with … DevOps methodologies and scalable CI/CD pipelines Microservices Architecture Exposure to Big Data technologies such as: Kafka, Spark, Hadoop etc Strong understanding of clean code principles Experience working with AWS Cloud Kotlin experience (preferred ...

Vue Developer

Hiring Organisation
Teksystems
Location
Bristol, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450/day
other stakeholders to refine, clarify and prioritise requirements. Establish a comprehensive testing strategy covering unit, integration, end-to-end, performance and resilience testing. Write clean, reusable and testable code, including unit and integration tests using Vitest and Cypress. Participate in CI/CD pipelines for frontend builds, including … code reviews and release processes. Document components, patterns and frontend architecture to support knowledge sharing and maintainability. Contribute to coding standards and best practices across the frontend codebase. Use Git, package managers such as npm or pnpm, and build tools as part of the daily development workflow. Essential Skills ...

Senior Java Engineer (AWS, REST, SOAP) - Hybrid - Sussex

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £700 per day
pipelines using tools such as Jenkins, GitHub Actions, or AWS CodePipeline. Work with containerisation technologies (Docker) and orchestration platforms (ECS/EKS). Ensure code quality through unit, integration, and automated testing. Apply secure coding practices, including OAuth2/JWT authentication and general security best practices. Collaborate with cross … functional teams to deliver high-impact features and improvements. Participate in code reviews, architectural discussions, and continuous improvement initiatives. Required Skills & Experience Strong proficiency in Java, Spring Boot, and modern backend development. Hands-on experience with AWS cloud services (Lambda, API Gateway, DynamoDB, ECS, S3, etc.). Solid understanding ...

Scala Engineer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£55 - £79 per hour
data, and design teams to shape solutions Supporting live services, including monitoring, troubleshooting, and optimisation Contributing to CI/CD pipelines and infrastructure as code Writing clean, testable, maintainable code Participating in code reviews, pairing, and team delivery Tech Stack & Environment Backend: Scala, Java (Python desirable … with data platforms or risk/fraud systems How You'll Work Deliver value iteratively and early Collaborate closely across disciplines Write simple, maintainable code Take ownership of services end-to-end Continuously improve systems and team practices Reasonable Adjustments: Respect and equality are core values to us. ...

Senior AI DevOps Engineer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
where appropriate Use AI tools to improve engineering productivity - while maintaining full accountability for quality, safety, and correctness Review, validate, and guide AI-generated code and outputs , ensuring they meet real engineering and operational standards Build services in TypeScript and Python , supported by strong testing and clean code practices Package, deploy, and operate workloads using Kubernetes (e.g. Helm) and Infrastructure as Code (e.g. Terraform) Work closely with other engineers, platform teams, and AI specialists to deliver integrated, end-to-end solutions Take responsibility for systems running in production , not just code that passes a build ...

Lead AI DevOps Engineer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Strong background as a Senior or Lead Software Engineer, Lead DevOps Engineer , or similar hands-on leadership role Excellent software engineering fundamentals: system design, clean code, testing, and long-term maintainability Deep experience designing and delivering API-driven and microservice-based systems Proven ability to modernise or integrate ...

Java Backend Engineer

Hiring Organisation
Interact Consulting Limited
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
500-550 a day
month contract. What you'll do: Build and maintain scalable microservices. Develop REST APIs using Java & Spring. Collaborate with cross-functional teams. Write clean, efficient, and testable code. What we're looking for: Strong Java (8+) and Spring experience. Solid background in microservices architecture. Experience with REST APIs, Docker ...

Java 8 Software Engineer | £500 – £550 | Inside IR35 | 6 Months | Hybrid Remote

Hiring Organisation
Opus Recruitment Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
Hibernate development practices Proven ability to build microservices and reliable RESTful APIs Hands-on experience applying TDD and BDD testing approaches Good understanding of clean coding principles, SOLID, and cloud technologies Previous experience in Finance/Fintech/Payments is highly beneficial Key Responsibilities Design, implement, and thoroughly test ...

Software Developer

Hiring Organisation
Robert Walters
Location
Warwickshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
understand requirements and deliver solutions. Integrate new software systems with existing technologies seamlessly. Troubleshoot and resolve technical issues during development and deployment phases. Write clean, efficient, and maintainable code following best practices. Ensure timely delivery of milestones while maintaining high-quality standards. Key Skills & Experience Required ...

QA Engineer

Hiring Organisation
Pontoon
Location
Warwick, Warwickshire, United Kingdom
Employment Type
Contract
tasks, driving excellence in automated and non-functional testing including performance, security, accessibility, and usability. Design, build, and maintain robust test automation frameworks with clean, reliable code. Collaborate with junior QA Engineers and manual testers, guiding them in modern testing practices and engineering principles. Ensure consistent governance, design … code quality in line with software standards and technology strategy. Create detailed test scenarios and cases, analyzing non-functional specifications for performance, accessibility, and security testing. Maintain traceability from test cases back to requirements, producing automation scripts and regression test packs. Work with stakeholders to ensure all test data ...

GCP Native Engineering Lead

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £530 per day + Inside IR35
lead engineering and design discussions. Experience working on medium to high complexity systems with minimal supervision. Strong understanding of quality-driven development, including clean code and maintainable design. Ability to collaborate effectively within a team and mentor junior engineers. Reasonable Adjustments: Respect and equality are core values ...

Creative WebGL Developer

Hiring Organisation
Morgan McKinley
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 - £500 per day
space. This is a craft-led role for a developer who cares as much about visual quality, motion and storytelling as they do about clean, performant code. You'll be taking beautifully designed concepts and bringing them to life through real-time 3D and interaction-rich web experiences.You ...

Senior Data Engineer

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£400 - £500 per day
data engineering framework Build, enhance, and maintain data pipelines within Snowflake Develop transformations and data models using DBT Orchestrate workflows using Apache Airflow Write clean, modular Python code for data engineering solutions Improve pipeline reliability, performance, and observability Introduce and embed CI/CD, testing, and deployment best ...

Android Developer

Hiring Organisation
scrumconnect ltd
Location
City, Newcastle Upon Tyne, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Kotlin and/or Java Collaborate with UX designers, product owners, and Back End developers to translate requirements into robust, accessible mobile experiences Write clean, testable, well-documented code following established coding standards and architectural patterns Implement and maintain CI/CD pipelines for automated builds, testing … deployment Ensure applications meet WCAG 2.2 accessibility standards and GDS service standards Conduct code reviews and contribute to engineering best practices within the team Integrate with RESTful APIs and Back End services, working closely with API developers Troubleshoot and resolve performance issues, crashes, and production defects Support Google Play ...

Senior C# / .NET Developer - Risk & Financing Platforms

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £650 per day
/.NET services that underpin risk, collateral, and securities-financing platforms Building and integrating RESTful APIs to connect with upstream and downstream systems Delivering clean, maintainable, object-oriented code aligned with engineering best practices Supporting risk-related workflows, including exposure calculations, limits monitoring, and reporting Working with large … with C# and modern .NET frameworks Background in Financial Services technology, ideally within risk, financing, or trading environments Strong grounding in object-oriented design, clean coding practices, and scalable architecture Proven ability to design, build, and integrate RESTful APIs Solid experience working with SQL databases and optimising data-driven ...

Python Developer

Hiring Organisation
Vallum Associates
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £525/day
Ansible Collaborate with DevOps teams to implement and maintain CI/CD pipelines Manage cloud-based infrastructure and containerized applications (Docker/Kubernetes) Write clean, efficient, and reusable code following best practices Troubleshoot, debug, and optimize application performance Ensure security, scalability, and reliability of systems ...

Python Developer - Remote

Hiring Organisation
Vallum Associates Limited
Location
East London, London, United Kingdom
Employment Type
Contract
Contract Rate
£525 per day
Ansible Collaborate with DevOps teams to implement and maintain CI/CD pipelines Manage cloud-based infrastructure and containerized applications (Docker/Kubernetes) Write clean, efficient, and reusable code following best practices Troubleshoot, debug, and optimize application performance Ensure security, scalability, and reliability of systems ...

Senior KDB+ Developer

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract
disk I/O, and network considerations across kdb+ processes. Develop robust and reusable q libraries, utilities, and frameworks with a strong focus on clean, maintainable, and performant code. Drive continuous improvement through refactoring, performance benchmarking, and adoption of best practices. Mentor and guide junior and mid-level developers … fostering a culture of technical excellence, code quality, and knowledge sharing. Participate in design reviews, production support, and root cause analysis of complex system issues. Work collaboratively within an Agile or iterative delivery environment, contributing to design, implementation, testing, and release phases. Required Skills & Experience 8+ years of hands ...

Python Developer

Hiring Organisation
Maxwell Bond
Location
Manchester, United Kingdom
Employment Type
Contract
Contract Rate
£400/day Outside IR35
Spark or serverless architectures Core responsibilities and skills Build and maintain real-time and batch ETL pipelines using Python on large, complex datasets Write clean, scalable Python code for data ingestion, transformation, and processing Design and optimise SQL queries for performance, cost, and reliability across large data volumes … Work with distributed data processing tools such as Apache Spark to handle high-volume workloads Improve existing pipelines by identifying bottlenecks and refactoring code and queries Develop and maintain data workflows, scheduling, and orchestration processes Provision and manage AWS infrastructure using Infrastructure as Code tools such as Terraform ...

IOS Developer

Hiring Organisation
scrumconnect ltd
Location
City, Newcastle Upon Tyne, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
native iOS applications using Swift Collaborate with UX designers, product owners, and Back End developers to translate requirements into robust, accessible mobile experiences Write clean, testable, well-documented code following established coding standards and architectural patterns Implement and maintain CI/CD pipelines for automated builds, testing … deployment Ensure applications meet WCAG 2.2 accessibility standards and GDS service standards Conduct code reviews and contribute to engineering best practices within the team Integrate with RESTful APIs and Back End services, working closely with API developers Troubleshoot and resolve performance issues, crashes, and production defects Support App Store ...

Java Developers x 2 (Guildford)

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Guildford, Surrey, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £525/day
innovative geospatial solutions using modern cloud technologies. You'll work across the full software development lifecycle, designing and developing scalable cloud-based applications, writing clean, maintainable code, and ensuring quality through testing and best practices. Alongside contributing to code reviews and reusable solutions, you'll collaborate closely ...

Java Developers x 2 (Newcastle)

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Newcastle upon Tyne, Tyne and Wear, Tyne & Wear, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £525/day
innovative geospatial solutions using modern cloud technologies. You'll work across the full software development lifecycle, designing and developing scalable cloud-based applications, writing clean, maintainable code, and ensuring quality through testing and best practices. Alongside contributing to code reviews and reusable solutions, you'll collaborate closely ...

Scala Developer

Hiring Organisation
Teksystems
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £900/day
based platforms. Apply functional programming principles and Domain-Driven Design (DDD) to create maintainable, testable, and well-structured codebases. Participate actively in Agile ceremonies, code reviews, and continuous improvement initiatives to enhance delivery quality and team effectiveness. Essential Skills Strong proficiency in Scala development with a focus on writing … clean, efficient, and reliable code. Solid experience with functional programming principles and their practical application in production systems. Hands-on experience designing and building high-performance, distributed systems. Practical understanding of high-performance system patterns, including event-driven and low-latency architectures. experience working within Agile delivery teams ...

Bicep SME CGEMJP

Hiring Organisation
Experis
Location
United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
Remote Rate: up to 560 p/d Umbrella inside IR35 Role purpose/summary Our client is looking for a Lead Infrastructure as Code (IaC) Developer specializing in Bicep to architect and automate our client's Azure environment. You will bridge the gap between platform engineering, application teams … Automation : Integrate Bicep templates into robust Azure DevOps or GitHub Actions CI/CD pipelines. Security & Governance : Implement Azure Policy and Guardrails as Code to ensure compliance and cost management. State Management : Transition legacy ARM templates or manual builds into clean, Bicep code. Required Expertise Advanced Bicep : Mastery ...

Bicep SME CGEMJP00339238

Hiring Organisation
Experis
Location
Nationwide, United Kingdom
Employment Type
Contract
Remote Rate: up to £560 p/d Umbrella inside IR35 Role purpose/summary Our client is looking for a Lead Infrastructure as Code (IaC) Developer specializing in Bicep to architect and automate our client's Azure environment. You will bridge the gap between platform engineering, application teams … Automation : Integrate Bicep templates into robust Azure DevOps or GitHub Actions CI/CD pipelines. Security & Governance : Implement Azure Policy and ""Guardrails as Code"" to ensure compliance and cost management. State Management : Transition legacy ARM templates or manual builds into clean, Bicep code. Required Expertise Advanced Bicep : Mastery ...