Full Stack Java Developer

Harvey Nash Technology is hiring for a Full Stack Java Developer role based in Warsaw, Poland. The position involves working in a global team on distributed systems and complex legacy codebases, focusing on backend services and integrations.

• 4+ years of experience as a Java / Full Stack Developer
• Strong hands-on experience with Java, Spring, Spring Boot (DI, Spring Data, Spring Security)
• Experience with Hibernate and DB2
• Experience with Apache Kafka (producers, consumers, Kafka Streams, Kafka Connect)
• Experience with MongoDB (document modelling, Spring Data MongoDB)
• Knowledge of RESTful APIs, microservices, event-driven architectures
• Experience with Maven (multi-module builds)
• Experience with Docker
• Experience with Git & CI/CD (GitLab CI preferred)
• Experience working in distributed systems and complex legacy codebases
• Strong analytical skills and ability to understand complex business logic
• Good communication skills and ability to work in a global team

• Gather and analyse requirements with business stakeholders
• Design, plan, implement and test changes with the engineering team
• Adapt and enhance legacy Java applications for ISO 20022 changes
• Develop and maintain backend services and integrations
• Participate in code reviews, UAT support and production releases
• Continuously improve code quality and system design