Senior Full Stack Engineer (Java + React / AngularJS)

Location: Hybrid Kraków

Contract Type: B2B

Workload: Full-time

Are you looking to make a real impact in a global financial project? We are working FullStack engineer to join our Clients team.

Your responsibilities will include:

• Developing and maintaining backend services using Java / Spring Boot and frontend applications in ReactJS or AngularJS
• Designing and implementing scalable microservices and RESTful APIs
• Participating in system architecture and data modeling design
• Conducting code reviews, writing unit and integration tests
• Collaborating with global teams in an Agile environment
• Working with CI/CD pipelines and daily deployments
• Troubleshooting complex production issues and driving solutions
• Contributing to engineering best practices and team culture

Must-have qualifications:

• 5+ years of experience as a Full Stack Engineer
• Hands-on experience with Java, Spring Boot, JPA/Hibernate
• Strong knowledge of building and consuming REST APIs (JSON/XML)
• Solid frontend experience with ReactJS / AngularJS / JavaScript / jQuery
• Familiarity with version control systems (GIT), CI/CD tools (Jenkins), Docker, and shell scripting
• Database experience with PostgreSQL, Oracle, MongoDB
• Understanding of microservice architecture and secure coding practices

Nice-to-have experience:

• Cloud platforms like GCP, GKE, or AWS
• System architecture and integration patterns
• Database migration experience (e.g. from MongoDB to PostgreSQL)
• Experience in financial services or banking sector
• Leading engineering efforts in distributed/global teams

What we offer:

• International team and collaborative environment
• Work with modern tech stack and have influence on architecture decisions
• Stable cooperation
• Opportunities to grow into technical leadership or architectural roles