(General Hire) Research Scientist Intern (TikTok Recommendation) - 2026 Start (PhD)

Build and improve TikTok’s recommendation systems by delivering end-to-end machine learning solutions for key product challenges. You’ll own the full-stack ML system, optimize algorithms and infrastructure, and enhance recommendation performance to improve user experience and content discovery. Collaborate with cross-functional teams to shape product strategy and expand growth in important markets, applying deep learning to areas like NLP, CV, and recommender systems.