Worked on stabilizing and enhancing test suites for espressif/esptool and osbuild/osbuild, focusing on cross-version Python compatibility and CI reliability. Addressed changes in Python 3.14’s argparse behavior by dynamically computing expected program names in esptool tests, reducing false negatives and improving test accuracy. For osbuild, implemented environment-aware test adjustments, including skipping problematic tests in RPM builds and introducing a custom Pytest marker to manage TOML-writing dependencies. Leveraged Python, Shell scripting, and CI/CD practices to ensure robust validation across diverse build environments. These efforts improved release stability, reduced flaky test outcomes, and streamlined validation processes for both repositories.