Worked on the open-telemetry/opentelemetry-java repository to enhance the reliability of automated testing by addressing a bug in the JUnit5 extension’s cleanup logic. Focused on improving how nested test classes are handled, the work ensured that resources were properly managed and released during test execution, reducing the likelihood of resource leaks and flaky failures in continuous integration environments. Using Java and JUnit, the developer refined the test infrastructure to support more stable and predictable test outcomes. This targeted bug fix contributed to better developer productivity and CI stability, with careful attention to maintaining performance while increasing test robustness and reliability.