Java Full-Stack Developer

Quick Facts

Hybrid role in Warsaw for an experienced Java Full-Stack Developer working on modern Java ecosystem projects.

Description

Drive system development using modern technologies across the Java ecosystem (Java 17+, Spring Boot, microservices, Cloud, Docker/Kubernetes) within mature teams on diverse projects. You will design, develop, and maintain scalable Java solutions, build and test APIs, and integrate frontend interfaces with backend services.

Requirements

• Minimum 5 years of commercial experience as a Java Developer
• Solid hands-on experience with Java 11–21, Spring, and Spring Boot
• Experience with JPA, Hibernate, and Spring Data
• Hands-on development of RESTful and SOAP web services
• Strong knowledge of relational databases and SQL
• Proficiency with Git
• Strong unit and integration testing skills (JUnit, Spock, Mockito) plus frontend testing experience (Jest, Cypress, TestNG or similar)
• Understanding of containerization with Docker
• Experience with Maven or Gradle
• Hands-on frontend development experience using Angular and/or React
• English communication skills (minimum B2)
• Readiness for hybrid work in Warsaw

Responsibilities

• Design, develop, and maintain robust, scalable software solutions using Java and modern frameworks
• Implement clean, well-tested REST/SOAP APIs and integrate frontend interfaces with backend services
• Write unit and integration tests to ensure code quality, stability, and high performance
• Collaborate in cross-functional Agile teams on architecture, code reviews, and feature planning
• Debug, optimize, and refactor existing applications while maintaining documentation and supporting deployment pipelines

Benefits

Opportunity to work in mature teams on diverse projects and develop systems with modern Java ecosystem technologies.