Software Engineer Project Intern (Model Infrastructure) - 2026 Start (BS/MS)

Join TikTok’s Model Infrastructure team to improve engineering efficiency and architecture for large recommendation and LLM2Rec systems. You’ll work on project-based initiatives spanning training and inference optimization, memory-efficient integration of LLMs into the recommendation stack, high-concurrency sparse/dense streaming, hardware-aware co-design for GPU/NPU clusters, and distributed state management across heterogeneous memory hierarchies. Apply early as reviews are rolling.