Java Developer – Spring Boot, REST API, Kubernetes/AWS
Location: Dublin or Manchester (Hybrid)
Department: Engineering
Reports to: Engineering Manager
About the Role
We are looking for a skilled and motivated Java Developer to contribute to the modernization of our backend architecture. You will support the transformation of SOAP-based services into RESTful microservices using Spring Boot, working in a cloud-native environment built on Docker, Kubernetes (or ECS), and AWS. Our platform consists of multiple distributed services which process millions of requests per hour. This is a great opportunity to deepen your experience in scalable systems and modern development practices while learning from senior engineers.
Key Responsibilities
API Development & Architecture
1. Assist in designing and implementing REST APIs using Spring Boot and SwaggerHub
2. Contribute to the transformation of SOAP/XML to REST/JSON for backend services
3. Support API development and integration in a microservices environment
Microservices & Cloud Deployment
4. Contribute to containerized microservice development using Docker and Kubernetes, or AWS ECS
5. Participate in deploying and managing services on AWS cloud infrastructure
6. Collaborate on integrating with API Gateway, Lambda, and IaC tools like CloudFormation
Testing & Quality
7. Write and maintain integration and unit tests using tools such as JUnit and Mockito
8. Assist with debugging API issues and ensuring accurate data transformations
9. Work with the team to implement CI/CD and automation practices
Performance, Caching & DevOps
10. Support performance tuning and catching solutions (e.g., Redis)
11. Contribute to stateless microservice design and improvements
12. Help monitor application health using tools like Prometheus or ELK Stack
Collaboration & Learning
13. Work closely with senior engineers, QA, and product teams
14. Actively participate in agile ceremonies and sprint planning
15. Engage in peer reviews, mentorship opportunities, and continuous learning
Required Skills & Experience
16. 3+ years in Java development with Spring Boot
17. Understanding of REST architecture principles and best practices
18. Experience building REST APIs and integrating with JSON-based services
19. Exposure to SOAP-to-REST migration or service transformation projects
20. Hands-on with Docker and familiarity with Kubernetes or AWS ECS
21. Basic knowledge of Infrastructure as Code (IaC) tools like Terraform or CloudFormation
22. Familiarity with relational and NoSQL databases: PostgreSQL, MySQL, MongoDB, or Redis
23. Experience with CI/CD pipelines and tools such as Jenkins or GitLab CI
24. Proficiency in unit and integration testing (e.g., JUnit, Mockito)
25. Understanding of authentication protocols like OAuth2 or JWT
26. Working knowledge of Java 8+
Preferred Skills
27. Experience with API Gateways (e.g., AWS API Gateway)
28. Familiarity with messaging systems like Kafka or RabbitMQ
29. Basic understanding of serverless technologies (e.g., AWS Lambda)
30. Interest in evolving DevOps, automation, and cloud-native best practices