Full Stack Engineer (Java + React)
Summary
Build and modernize full-stack applications using Java and React, migrating legacy systems to scalable microservices and improving automation and efficiency.
Job Title: Full Stack Engineer (Java + React)
Location: Kraków, Poland (2 days office / 3 days remote)
Experience: 5–10 years
Role Overview
We are looking for a skilled Full Stack Engineer to design, build, and maintain modern applications and services. This role involves working across both backend and frontend technologies, contributing to system modernization, and improving efficiency through automation and microservices.
Key Responsibilities
- Build and support backend and frontend applications using Java (11/17/21) and ReactJS
- Develop and maintain microservices and APIs
- Modernize legacy systems by migrating from mainframe and IBM WebSphere to scalable microservices architectures
- Improve system efficiency by increasing Straight-Through-Processing (STP)
- Reduce testing costs through automation frameworks
- Contribute to overall system design, scalability, and performance improvements
Required Skills & Experience
- Strong experience with Java 11+ (Java 17+ preferred)
- Hands‑on experience with Kubernetes
- Proficiency in Git
- Strong command of Unix/Linux systems and CLI
- Solid understanding of RESTful APIs and microservices architecture
- Experience with Databases and SQL (Oracle Preferred)
Nice To Have
- Experience with JavaScript and React
- Exposure to DevOps environments
- Knowledge of application monitoring tools
- Familiarity with Spring / Spring Boot