During February 2025, Oleksandr Shystriy developed a flexible, containerized database testing capability for the razz-team/eva repository. He introduced a DatabaseContainer class in Java and Kotlin, encapsulating PostgreSQL container configuration and management to centralize database setup logic. This approach enabled the use of different database containers across test scenarios, improving both flexibility and maintainability of the test infrastructure. By leveraging Testcontainers and focusing on backend development and CI/CD integration, Oleksandr reduced code duplication in test setup and streamlined onboarding for new environments. The work provided a scalable foundation for reliable, reusable, and efficient database testing within the project’s automated workflows.