TikTok
Tech Lead Machine Learning Engineer - Multimodal/LLM, Trust and Safety
San Jose, California · Full-time · Posted Oct 28, 2026
- Experience
- 4+ years of hands-on experience in machine-learning system development.
- Education
- Master’s or Ph.D. in Computer Science, Machine Learning, Artificial Intelligence, or a related field.
About the job
Leads the design and delivery of production machine-learning systems that moderate harmful content across video, images, text, and audio.
What you'll do
- Own a core content-safety system module and lead engineers in delivering production-ready solutions.
- Architect and implement ML pipelines spanning data processing, training, evaluation, deployment, and monitoring.
- Improve moderation models and collaborate with product, policy, and operations teams on safety requirements.
What they ask for
- Master’s or Ph.D. in Computer Science, Machine Learning, Artificial Intelligence, or a related field.
- 4+ years of hands-on experience in machine-learning system development.
- Experience leading small technical teams or driving major ML modules end-to-end, and deploying large-scale ML models in production.
- Expertise in at least one of Computer Vision, Natural Language Processing, Large Language Models / Generative AI, or Multimodal modeling.
Nice to have
- Experience with LLM alignment, safety modeling, or trust & safety domains.
Tools
Computer Vision, NLP, LLMs, Generative AI, Multimodal modeling
AI focus
Develops and deploys multimodal ML and LLM-based content moderation systems, improving model performance for trust and safety.
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