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Senior Java Engineer (AWS, REST, SOAP) - Hybrid - Sussex
Daily rate: £500 - £700 (inside IR35)
Duration: 6 months
Hybrid: 2 days per week (Tues + Wed)
Start: ASAP
My new client is looking for a highly skilled Senior Java Engineer to join their engineering team. The ideal candidate combines deep technical expertise with strong engineering discipline, independent problem-solving ability, and a commitment to building robust, scalable systems. You will work across modern cloud-native architectures, contribute to API and microservices development, and help drive best practices across the engineering organization.
Key Responsibilities
- Design, develop, and maintain high-quality Java applications using Spring Boot.
- Build and optimise RESTful APIs and contribute to GraphQL service development.
- Develop cloud-native solutions using AWS services such as Lambda, API Gateway, DynamoDB, ECS, S3, and others.
- Contribute to microservices architecture, event-driven systems, and distributed design patterns.
- Implement CI/CD 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 of RESTful API design and exposure to GraphQL.
- Experience with microservices, event-driven architectures, and distributed systems.
- Familiarity with CI/CD pipelines and DevOps practices.
- Knowledge of Docker and container orchestration fundamentals (ECS, EKS).
- Experience with unit testing, integration testing, and automation frameworks.
- Understanding of security best practices, authentication/authorisation standards (OAuth2, JWT).
- Experience with SOAP/WSDL, JAXB, and legacy service integration.
- Experience with test automation and Cucumber.
Preferred Attributes
- Strong proficiency in software engineering fundamentals, including clean code, design patterns, and maintainable architecture.
- Demonstrated ability to think independently, validate information, and apply sound engineering judgment - including the ability to use AI tools effectively without over-reliance on them.
- Ability to work in a fast-paced environment and contribute to continuous improvement.
- Excellent communication skills and a collaborative mindset.
*Rates depend on experience and client requirements
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