Worked on user experience and maintainability improvements for opentensor/btcli by simplifying the command line interface, specifically removing an obsolete wallet inspect option to streamline onboarding and reduce confusion. In January, contributed to symfony/symfony by implementing strict validation for ObjectMapper transform callables, enhancing robustness and preventing runtime errors. Addressed compatibility in yuwata/systemd by resolving macro conflicts with libbpf, ensuring smoother installations. Enhanced protocol parsing in curl/curl by refining IMAP literal detection logic. Leveraged C, PHP, and Python across these projects, applying backend development, system programming, and unit testing skills to deliver more reliable, maintainable, and user-focused software solutions.