Krisp focused on backend development and testing improvements for the cashapp/misk repository, addressing test reliability and internal tooling. They implemented a reset method for the FakeRedis test utility, ensuring internal state is cleared between tests to prevent state leakage and reduce flakiness. By integrating the TestFixture interface, Krisp enabled standardized setup and teardown processes, which improved test isolation and contributed to more stable continuous integration workflows. Working primarily with Java and Kotlin, they centralized test utility state management, enhancing maintainability. Over the month, Krisp’s work demonstrated depth in backend testing practices, prioritizing robust, maintainable, and reliable test infrastructure.