Machine Learning Scientist Intern (TikTok-Recommendation) - 2026 Start (PhD)

Build and improve end-to-end recommendation system models that enhance user experience, platform safety, and content discovery. Tackle high-priority ML challenges spanning content understanding, LLM-related problems, robustness, and fairness. Own the full-stack ML pipeline from algorithm design through system infrastructure, partnering with researchers and engineers to continuously push recommendation performance and support TikTok’s growth in key markets.