Contract Java Developer jobs in London

We're looking to register interest from talented Java developers for upcoming contract opportunities in London. These roles could involve designing and building scalable microservices architectures, working with modern cloud platforms like Azure and AWS, and collaborating across distributed teams to deliver robust backend solutions. If you're an experienced Java professional ready to contribute to impactful projects, this could be an exciting next step.

Please note the content of this advert does not represent a live vacancy.

About the opportunity

This is an opportunity to register your interest in future Java Developer contract positions based in London. Roles of this type could sit within organisations modernising their technology stacks, building cloud-native applications, or scaling distributed systems. The work could involve partnering with cross-functional teams to design APIs, develop microservices using Spring Boot, and implement CI/CD pipelines in containerised environments. You'd be contributing to projects where technical excellence and collaborative problem-solving drive real business value.

Typical role overview

• Location: London, Greater London, England
• Contract type: Contract · Full-time
• Rate: £500–700 per day
• Domain: Java backend development · Cloud-native architecture

What you would do

Typical responsibilities could include:

• Designing and developing microservices using Java, Spring Boot and Spring frameworks
• Building and maintaining RESTful APIs and integrating with distributed systems
• Implementing CI/CD pipelines and containerisation with Docker and Kubernetes
• Writing clean, maintainable code and collaborating on code reviews
• Troubleshooting and optimising performance across cloud platforms such as Azure and AWS
• Contributing to architectural decisions and technical design discussions
• Working with SQL databases and managing data pipelines
• Supporting deployment and infrastructure automation using tools like Terraform

What you could bring

Most roles of this type require the following:

Must-have

• Proficiency in Java with proven experience developing production applications
• Strong knowledge of Spring Boot, Spring frameworks and microservices architecture
• Experience with cloud platforms (Azure and/or AWS) and containerisation (Docker, Kubernetes)
• Solid understanding of CI/CD practices and modern DevOps tooling
• Experience with SQL and relational databases
• Bachelor's degree in Computer Science or related discipline
• Right to work in the United Kingdom

Nice-to-have

• Oracle Certified Professional: Java SE Programmer or Oracle Certified Associate: Java SE certification
• Spring Professional (VMware) certification
• Experience with API design, RESTful principles and distributed systems
• Familiarity with monitoring, logging and observability tools
• Knowledge of additional languages such as Python or Bash
• Experience with infrastructure-as-code practices

What roles of this type could offer

Most roles of this type offer the following, dependent on the industry and seniority of the role:

• Opportunity to work on scalable, cloud-native applications impacting real-world business outcomes
• Exposure to modern development practices, containerisation and infrastructure automation
• Potential to collaborate with experienced engineering teams and contribute to architectural decisions
• Contract flexibility and competitive daily rates (£500–700 per day)
• Development of expertise in high-demand cloud and microservices technologies
• Potential for contract extension and future permanent opportunities, where available

About SThree

SThree is the global STEM workforce consultancy.
We advise businesses, build expert teams and deliver project solutions to outpace tomorrow, together.

Across the UK, we connect talented specialists with cutting-edge opportunities across technology, engineering, life sciences and financial services supported by our offices in London, Birmingham, Manchester, Glasgow and Leeds

How to register interest

If you are interested in being added to our database to be considered for future opportunities, registering is quick and easy. No cover letter required. We will be in touch when we are instructed on these roles to discuss the next step in your career.