Worked on enhancing TLS session resumption reliability within the JetBrainsRuntime repository, focusing on a targeted bug fix in Java network programming. Addressed issues in TLS session ticket parsing by refactoring the parameter reading logic to utilize Record.getIntXX and Record.getBytesXX methods, ensuring more accurate data interpretation during session resumption. Updated the SSL test harness to use PKCS12 keystores and corrected keystore filenames, aligning test scenarios with production configurations. These improvements reduced the likelihood of handshake failures on resumed connections, contributing to greater runtime stability. Demonstrated technical depth in Java, SSL/TLS protocols, and automated testing infrastructure throughout the process.