Job Description
Job Title: Senior Java Developer
Location: Hybrid
Contract Length: 6 months
Day Rate: £550 per day
Industry: Global eCommerce
About the Role
I am seeking a Senior Java Developer contractor to join a global eCommerce business. As a Senior Java Developer, you will play a key role in building scalable backend systems that support millions of users worldwide, driving performance, reliability, and maintainability. You’ll be working in a fast-paced, agile environment, collaborating with cross-functional teams to deliver high-quality software that directly impacts customer experience.
Key Responsibilities
* Design, develop, and maintain scalable Java-based backend systems
* Collaborate with product owners, architects, and fellow engineers to deliver new features and improve system performance
* Write clean, maintainable, and testable code, following best practices
* Participate in code reviews and mentor junior developers
* Contribute to architectural decisions and technical design discussions
* Integrate with third-party APIs, payment gateways, and microservices
* Ensure the reliability, uptime, and performance of production systems
Tech Stack
* Languages: Java, Spring Boot
* Architecture: Microservices, REST APIs, Event-driven architecture
* Databases: Cockroach DB
* Cloud: AWS (EC2, Lambda, S3, ECS), Docker, Kubernetes
* CI/CD: Jenkins, GitLab CI/CD, Terraform
What We’re Looking For
* 7+ years of Java development experience in high-scale environments
* Strong experience with Spring Boot and building RESTful APIs
* Deep understanding of microservices and distributed systems
* Comfortable working in CI/CD and cloud-native environments (ideally AWS)
* Experience with eCommerce platforms or large-scale transactional systems is a big plus