Fullstack Developer

Senior Full Stack Engineer (Java + React / AngularJS)
Location: Hybrid Kraków/Warszawa
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. 

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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

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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

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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

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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

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