10 of 10 Contract Clean Code Jobs in London

Junior Software Engineer (Java / Kotlin / JVM)

Hiring Organisation
Salt
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£0.00 - £200.00 per day
based backend development. The successful candidate will be working on modern applications and services that support customer-facing digital products, with a focus on clean code, APIs, service-based architecture and production-quality software delivery. Experience within digital banking, fintech, financial services or insurance would be beneficial, although … support * Develop and integrate APIs that support customer-facing digital products and internal platforms * Contribute to both greenfield and brownfield development projects * Participate in code reviews, technical discussions and system design conversations * Work closely with product, engineering and wider technology teams to refine requirements and deliver new features * Write ...

Senior Analytics Engineer - NHS

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £515 per day
similar) to communicate insights to stakeholders Build and maintain repeatable analytical solutions to support programme monitoring and reporting needs Produce well-documented, maintainable code and processes Technical Requirements Strong experience with: SQL and Python AWS (data/analytics services) Hands-on experience with BI tools (e.g. Power BI, Tableau … delivery environments Familiarity with: Paired programming Test-driven development (TDD/Playwright) Git/GitHub CI/CD and DevOps practices Strong commitment to clean code, documentation, and best practice engineering Key Behaviours Strong communication and relationship-building skills Collaborative and effective across multidisciplinary teams Proactive, self-starting ...

Data Science AI Engineer - RAG Chatbot LangGraph exp

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £650 per day, Negotiable
Chatbots, MCP Servers and Agentic models for our SaaS platforms Collaborate with product and engineering teams to productionise models and pipelines Contribute high-quality code to GitHub-based workflows and peer review processes Validate model performance and maintain high standards for data and model accuracy Communicate insights and technical … experience as Data Science AI Engineer - RAG Chatbot LangGraph exp: Core Skills Strong Python and SQL skills – We want people who write clean code (using AI assistant coding is fine, but we want people that understand the language and can explain why they went with a certain approach ...

Lead AI Enabled Software/DevOps Engineer

Hiring Organisation
Guidant Global
Location
London, City of London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £850/day
Senior or Lead Software Engineer, Lead DevOps Engineer, or similar hands-on technical leadership role - Excellent software engineering fundamentals, including system design, clean code, testing, and maintainability - Strong experience designing and delivering API-driven and microservice-based systems - Proven ability to modernise or integrate legacy applications into modern ...

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/ ...

Fullstack Camunda Developer

Hiring Organisation
eTeam Workforce Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 358 - 402 Daily
using Java and SQL-based Back End systems Participate in SCRUM ceremonies, update JIRA in timely fashion Understand business requirements to write and implement, clean, scalable, testable code Ensure features/user stories delivered with requirements under 100% automated test coverage 3rd line support of production environment ...

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 ...

SC Cleared Lead Software Developer (Power Platform)

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Power Apps, Power Automate) Developing and integrating services within a wider architecture Ensuring solutions are user-focused, accessible, and aligned to government standards Writing clean, maintainable, and reusable code/configuration Supporting issue investigation, resolution, and continuous improvement Applying secure development practices, including awareness of OWASP principles Collaborating … Leadership experience working for a government end client Strong experience building solutions using Power Platform in production environments Solid software development background beyond low-code tools Ability to engage with senior stakeholders and non-technical users Experience breaking down requirements, refining work items, and defining acceptance criteria Understanding ...

Lead Software Engineer

Hiring Organisation
Solos Consultants Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£750 per day
will: Lead the design, build, and delivery of scalable, secure software solutions Take ownership of end-to-end feature development across complex services Produce clean, secure, test-driven code using Python and Django Support live services, ensuring performance, resilience, and stability Collaborate closely with BAs, UCD specialists ...

Applied AI Scientist

Hiring Organisation
Guidant Global
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £800 per day
Strong, demonstrable experience as an Applied AI Scientist, Data Scientist or similar hands-on technical role - Excellent Python skills, with the ability to write clean, efficient, production-quality code - Experience developing and deploying AI solutions outside of fully managed cloud services - Solid understanding of modern AI and machine ...