I served as a platform-level designer worked under TikTok's Core Product Infrastructure team, acting as a design auditor across the main app — help setting component standards and leading the weekly app-wide design review to align all vertical teams.

I owned the foundational UI components used globally across the app, including pop-up modals (alerts), feed bottom action area, intro sheet, navigation bars, floating notices, and in-app push notifications.

In parallel, I led account design — raising the security baseline for global users, advancing authentication and verification infrastructure for business accounts, and streamlining the multi-account switching experience.