Location: hybrid: 1 - 2 times a month in the office (Wrocław or Poznań)TasksIncrease unit and integration test coverage, focusing on complex and legacy modulesPrepare and maintain a Docker image of the database used for integration testsBuild and maintain a Testcontainers‑based integration testing frameworkSupport refactoring of modules that cannot be meaningfully tested in their current formImprove structure and consistency of test code across the backendMaintain CI/CD stages including coverage, performance and reliability checksEnsure long‑term maintainability of the test suiteRequirementsJava 21Spring Boot 3.xJUnit 5MockitoAssertJTestcontainers for integration tests with real databasesDocker for building and running local environmentsAzure Cloud services including SQL DB, App Services, Application Gateway, Application Insights, Log Analytics workspace, ADF, Storage Account and Key VaultBicep for IaC definitionsAzure Pipelines with YAML‑based CI/CDHybrid mode: 1–2 times per month in the officeNice to have: familiarity with financial or regulatory systemsNice to have: experience with FSCP or SSNS stacksNice to have: understanding of performance tuningNice to have: experience with Playwright for E2E testingNice to have: experience with JMeter for performance and load testingOfferMultisport cardPrivate healthcareAccess to an e‑learning platformGroup life insurance