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April 24, 2026

Senior Java Developer

Senior • Remote

160 - 180 PLN/hr

Warsaw, Poland

Summary: The Senior Java Developer plays a crucial role in designing and implementing complex Java-based solutions, mentoring other team members, and contributing to large-scale projects in either the enterprise or public sectors.

  • Remote work model

  • Contract type: B2B, long-term- 48 months

  • Business travels: No

  • Salary Grids: 160-180 zł/h

Main Responsibilities:

  • Design and implement complex Java-based solutions.

  • Mentor junior developers and assist in team knowledge sharing.

  • Manage and contribute to large-scale enterprise or public-sector projects.

Key Requirements:

  • Fluent in German (C1) and English (min. B1).

  • Degree in Computer Science or equivalent.

  • Minimum of 5 years of professional experience in Java

  • Strong understanding of Spring Boot, RESTful APIs, testing frameworks (JUnit, Mockito)

  • Experience in OpenShift and Helm charts and ORM frameworks like Spring Data or JPA

  • Knowledge of Oracle or PostgreSQL (min. 1 year).

  • Experience with Gradle for continuous integration (min. 2 years).

  • Experience with large public sector projects or comparable private sector engagements.

Nice to Have:

  • Additional years of experience with core technologies beyond the stipulated minimum.

  • Frontend experience with React and TypeScript, and understanding of Ajax (min. 1 year).

  • Experience with complex enterprise application integration.