Worked on the go-gitea/gitea repository to address a critical bug affecting team member permissions, specifically ensuring that owners with zero access are correctly included in assignee and reviewer lists for repositories and project issues. The solution involved refining permission modeling and updating the code to use GetTeamUserIDsWithAccessToAnyRepoUnit for more accurate assignee and reviewer lookups, as well as directly loading assignee lists for project issues. This backend improvement, implemented in Go, enhanced the accuracy of permission data, reduced misassignments, and improved notification reliability. Demonstrated skills in API development, backend development, and database management while improving multi-repo data flow.