New offer - be the first one to apply!

November 4, 2026

Senior Java Developer

Senior • On-site

150 - 165 PLN/yr

Warsaw, Poland

Quick Facts

  • Role: Senior Java Developer (Contract)

Description

You will build and maintain scalable backend services and RESTful APIs in Java (Spring Boot) that power client-facing portal applications. You will model data and integrate with relational and NoSQL databases, coordinate API contracts with front-end developers, and deploy services in containerized environments. The role includes secure coding, unit/integration testing, CI/CD contributions, continuous improvement of performance and reliability, and production issue investigation with on-call/support rotations as needed.

Responsibilities

  • Build and maintain scalable Java backend services and RESTful APIs (Spring Boot)

  • Model data and integrate with relational and NoSQL databases

  • Collaborate with front-end developers on API contracts and seamless integration

  • Deploy and run services in Docker/Kubernetes/OpenShift environments

  • Apply secure coding practices, write unit and integration tests, and contribute to CI/CD pipelines

  • Improve performance, scalability, and reliability

  • Investigate and fix production issues, including on-call/support rotations

  • Participate in Agile ceremonies, sprint planning, and technical design discussions

Requirements

  • 7+ years of backend development experience with deep expertise in Java

  • Hands-on Spring Boot experience

  • Experience designing and consuming REST APIs

  • Container and orchestration experience (Docker/Kubernetes/OpenShift)

  • Solid SQL skills (relational data modeling and query optimization)

  • Familiarity with CI/CD pipelines and automated testing practices

Similar jobs you might like

Unlock Full Resume Report