Java Full Stack Developer (Hybrid – 2 Days Onsite in Kraków, Poland)

We are looking for a skilled Java Full Stack Developer to join our team in Kraków. This is a hybrid role requiring 2 days per week onsite, offering the opportunity to work on modernizing enterprise systems and building scalable, cloud-native solutions.

Key Responsibilities

• Design, build, and support scalable services, microservices, and applications (both backend and frontend) using Java (11/17/21) and modern web technologies such as React
• Contribute to the modernization of legacy systems, including migration from mainframe and IBM WebSphere to API-driven and microservices-based architectures
• Help reduce operational costs and system complexity through modern engineering practices
• Improve testing efficiency by implementing and expanding automated testing frameworks
• Enhance Straight-Through Processing (STP) capabilities across services and platforms
• Required Skills & Experience
• Strong experience with Java (11 or higher); experience with Java 17+ is highly preferred
• Hands-on experience with Kubernetes and containerized environments
• Proficiency with Git for version control
• Strong command of Unix/Linux systems and CLI toolsSolid experience with databases and SQL (Oracle preferred)

Good understanding of RES

• Tful APIs and microservices architecture
• Familiarity with HTTP/web technologies and Java
• Script
• Nice to Have
• Experience with Reactjs for frontend development
• Background working in a DevOps-oriented delivery team
• Knowledge of application monitoring and observability tools
• Experience with Spring / Spring Boot