TikTok
Machine Learning Scientist Graduate (TikTok Trust and Safety) - 2027 Start (PhD)
San Jose, California · Full-time · Posted Oct 28, 2026
- Education
- PhD in computer science or a related discipline.
About the job
Develop content-understanding machine learning models and optimize distributed training to detect content and behaviors that violate TikTok’s community guidelines and related regulations.
What you'll do
- Collaborate with product, engineering, and data science teams on trust and safety goals, model deployment, serving workflows, and data-driven strategies.
- Develop content-understanding techniques, including unimodal and multimodal classifiers, learning models, reinforcement learning models, and large language models.
- Continuously optimize the distributed model training framework.
What they ask for
- Completing or recently completed a PhD in computer science or a related discipline.
- Hands-on or academic experience in machine learning, large language models, recommendation systems, or related areas.
- Strong coding skills.
- Curiosity about new technologies and entrepreneurship, plus communication and teamwork skills.
Tools
computer vision, NLP, Large Language Models, Reinforcement learning
AI focus
Develop content-understanding models to recognize violating content and improve trust and safety; optimize distributed model training.
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