TikTok
Machine Learning Engineer Intern (E-Commerce Recommendation Video)- 2027 Summer
Seattle, Washington, United States of America · Intern · Internship
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About the role
- Team Introduction: Global E-Commerce (TikTok Shop) is one of TikTok's fastest-growing businesses and a core driver of the company's revenue growth.
- We believe recommendation is being rewritten in the compute era.
- Candidates may apply to a maximum of two positions across Our Company and its affiliates globally.
Responsibilities
- You will help build - and rewrite - an industrial recommendation system serving a billion-scale user base across short-video, livestream, and product scenarios, covering retrieval, pre-ranking, ranking, and blending end to end.
- Build one-stage generative retrieval.
- We expect, and support, original research: internal papers, patents, and publication at top external venues.
- Our Global E-Commerce Content Recommendation team owns the end-to-end recommendation stack for e-commerce video and image-text content on TikTok worldwide - retrieval, ranking, and multi-queue blending; supply ecosystem and cold start; and the browsing-to-purchase experience for hundreds of millions of users.
- Our ambition is to build the most advanced recommendation system in the world, and the next generation after that.
Requirements
- Deep research or engineering practice in at least one of: LLMs / foundation models, NLP, CV, RL, or recommendation / search / ads - and you can articulate why you made the choices you made, and where they fell short.
Nice to have
- Publications at KDD, SIGIR, RecSys, WWW, ACL, NeurIPS, ICML, ICLR, or comparable venues - or high-quality open-source work.
- Hands-on experience with LLM post-training (SFT / RLHF / DPO / GRPO), agent-system construction, or inference acceleration.
- Led or deeply contributed to a key project in search, ads, recommendation, or large models, with a complete problem-to-online-impact loop.
- Awards in ACM-ICPC, NOI, Kaggle, or comparable competitions.
Benefits
- Interns will gain practical experience, explore potential career paths, and participate in social events, learning programs, and development workshops alongside industry professionals.
Company info
- We are looking for talented individuals to join us for an internship.
- We are embedding coding agents deep into the algorithm-development loop: automated feature mining and pipeline generation, experiment configuration and training orchestration, automated evaluation and online-diagnosis attribution, bad-case mining and patrol.
- Our internship program offers students hands-on experience, industry exposure, and opportunities to apply their knowledge to real-world challenges while building a strong foundation for personal and professional growth.
This listing is sourced directly from TikTok's careers page and normalized into a canonical job model.