Amir Yazdanmanesh focused on improving the reliability of the OkHttp test suite by addressing a persistent issue with flaky TLS handshake tests. Working in Kotlin, Amir expanded the Major Issuer List within the certificate validation logic to include additional recognized authorities, ensuring that cross-platform tests accurately verified valid certificate issuers. This change reduced intermittent CI failures and enhanced the stability of automated testing for the square/okhttp repository. Amir’s work demonstrated a strong understanding of software testing and TLS security practices, contributing to more dependable test outcomes and enabling faster, more confident releases through improved test data maintenance and validation processes.