Worked on the goauthentik/authentik repository to address a data integrity issue within the OAuth user flow. Focused on backend development using Python, the work involved fixing a bug to ensure that user IDs returned from the OAuth callback are consistently formatted as strings. This technical approach reduced type-related errors and improved interoperability with downstream components that rely on standardized data formats. The solution was implemented specifically in the sources/oauth path, with clear traceability through linked issue and commit references. Skills applied included API integration and OAuth, contributing to more reliable authentication processes and easier future maintenance within the codebase.