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TikTok

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

San Jose, California · Internship · Posted Oct 28, 2026

Education
Currently pursuing a PhD in Computer Science, Engineering, Operations Research, or a related technical discipline.

About the job

Develop and launch machine-learning recommendation systems for TikTok Shop live commerce, spanning retrieval and ranking through experimentation and optimization.

What you'll do

  • Build and optimize recommendation models to improve GMV, conversion, watch time, and long-term user value.
  • Develop cross-domain and multimodal models connecting videos, live streams, products, and user behavior; advance generative recommendation, large recommendation models, and reinforcement learning.
  • Collaborate across teams to launch scalable solutions, run experiments, and translate research into measurable business impact.

What they ask for

  • Currently pursuing a PhD in Computer Science, Engineering, Operations Research, or a related technical discipline.
  • Strong machine-learning foundation and experience 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 in recommendation systems, particularly live commerce, e-commerce, search, ads, or other large-scale consumer products.
  • Experience with generative recommendation, large recommendation models, LLMs, multimodal models, or related recommendation and optimization methods.

Tools

Python, C++, PyTorch

AI focus

Develop and optimize live-commerce recommendation models, including generative recommendation, large recommendation models, reinforcement learning, multimodal learning, and long-term value optimization.

Model-written summary · the original posting is authoritative

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