About the TeamThe AI Data Service and Operations (ADSO) team provides safety and non-safety data annotation services, search operation services, and customer services for TikTok's international products, helping them to build their own data ecological security. In order to optimize user experience while upholding negative content governance on our platforms, the Eco Governance team within ADSO focuses on data labeling work to support online content strategies and AI/LLM model development. As the AI Model Evaluation Project Lead in the Eco Governance team, you will lead end-to-end delivery of AI data annotation projects and play a critical role in evaluating AI/LLM model performance. You will directly manage a team of AI Project Managers while driving rigorous model evaluation, analyzing results, identifying gaps in model behavior, and delivering clear, actionable recommendations to improve model quality. You will bridge annotation operations with model performance insights to ensure hi...