Worked across the richard67/joomla-cms and plone/volto repositories to deliver targeted improvements in form validation, type safety, and backend reliability. Enhanced Joomla CMS by refining grouped list field validation, allowing both grouped and direct options to be processed accurately, which improved data integrity and user experience. In plone/volto, corrected TypeScript typings for settings icons to ensure accurate SVG path handling. Addressed backend stability in Joomla CMS by safeguarding action logging against unauthenticated users, preventing PHP warnings and improving audit trail security. The work emphasized clear, commit-scoped changes and demonstrated proficiency in PHP, TypeScript, frontend development, and form validation.