Ákos Kukucska focused on stabilizing and delivering the Dataverses API test infrastructure within the IQSS/dataverse repository. He developed a robust, isolated test suite in Java using JUnit, refining metadata language handling and implementing instance-scoped test lifecycle hooks to ensure reliable cleanup and consistency across tests. By removing static from afterEach methods and resolving faulty merges, Ákos improved per-test isolation and overall test reliability. His work enhanced CI stability through cleaner setup and teardown processes, providing clearer failure signals. This effort demonstrated a deep understanding of backend development, API testing, and test automation, resulting in a more maintainable testing framework.