Java Test Engineer

Experis

📍 Warsaw, Masovian Voivodeship, Poland

Contract Computer Occupations Posted February 22, 2026

Job Description

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Location: hybrid: 1 - 2 times a month in the office (Wrocław or Poznań)
Salary: 150 - 160 PLN net/h





Tasks

  • Increase unit and integration test coverage, focusing on complex and legacy modules
  • Prepare and maintain a Docker image of the database used for integration tests
  • Build and maintain a Testcontainers‑based integration testing framework
  • Support refactoring of modules that cannot be meaningfully tested in their current form
  • Improve structure and consistency of test code across the backend
  • Maintain CI/CD stages including coverage, performance and reliability checks
  • Ensure long‑term maintainability of the test suite

  • Requirements
  • Java 21
  • Spring Boot 3.x
  • JUnit 5
  • Mockito
  • AssertJ
  • Testcontainers for integration tests with real databases
  • Docker for b...