Model Infrastructure Engineer Graduate (TikTok Recommendation Architecture) - 2026 Start (BS/MS)

Build and optimize the Recommendation Architecture team’s GPU-based AI infrastructure, helping deploy and scale LLM and large-scale recommender models in production. You’ll focus on performance and memory efficiency, develop tools and libraries to accelerate deep learning workloads, and collaborate with research and infrastructure teams to deliver high-throughput training and inference pipelines. You’ll also analyze system performance through GPU profiling and throughput tuning.