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TikTok

Machine Learning Engineer Graduate (E-Commerce Recommendation Live) - 2027 Start (PhD)

Seattle, Washington · Full-time · Posted Oct 28, 2026

Education
PhD in Computer Science, Electrical Engineering, Mathematics, Statistics, or a related discipline; completing or recently completed.

About the job

Build and optimize recommendation systems for TikTok Shop live commerce, connecting content, products, and user behavior to improve user experience and business outcomes.

What you'll do

  • Build and optimize models for recall, pre-ranking, ranking, and mixed ranking.
  • Develop cross-domain and multimodal modeling solutions for live commerce recommendations.
  • Advance recommendation technologies and partner with teams to launch scalable solutions and measure impact.

What they ask for

  • Completing or recently completed a PhD in Computer Science, Electrical Engineering, Mathematics, Statistics, or a related discipline.
  • Strong machine learning foundation and expertise in at least one of recommendation systems, search, advertising, NLP, multimodal learning, or large-scale applied AI.
  • Strong programming skills in Python or C++, with hands-on experience using deep learning frameworks such as PyTorch.
  • Understanding of data structures, algorithms, and large-scale model training or production machine learning systems.

Nice to have

  • Experience with recommendation systems, especially for live commerce, e-commerce, search, ads, or large-scale consumer products.
  • Experience with generative recommendation, large recommendation models, LLMs or multimodal foundation models, or related modeling areas.

Tools

Python, C++, PyTorch

AI focus

Generative recommendation, large recommendation models, multimodal learning, reinforcement learning, and long-term value optimization for live commerce recommendations.

Model-written summary · the original posting is authoritative

First seen Oct 28, 2026 · Last verified Nov 5, 2026 (UTC)