Contributed to backend and mobile development by delivering targeted improvements in two open-source repositories. In searxng/searxng, addressed a data integrity issue by refining Python logic in the defaults_from method, ensuring fields with empty or None values are handled correctly while maintaining proper treatment of zero values. This fix improved result reliability and reduced the risk of misleading outputs for configurable fields. In bitwarden/android, implemented a security-focused feature by adding eu.weblibre.gecko.alpha to the privileged apps list, enabling secure interactions and supporting future trusted-app integrations. Work demonstrated proficiency in Python, Android development, and careful code review for robust, maintainable solutions.