Machine Learning Engineer, TikTok - Business Governance

What you'll do

• Build content safety algorithms for video, text, image, and audio.
• Improve content moderation pipelines using machine learning and large models, focusing on efficiency, robustness, and production stability.
• Train and apply LLMs and MLLMs for content safety, and productionize AI Agents, multimodal reasoning, and video understanding.

What they ask for

• Bachelor degree or above in Computer Science, Software Engineering, Artificial Intelligence, Mathematics, or a related field.
• Strong understanding of machine learning and deep learning, with familiarity with Transformer architectures, LLMs, and MLLMs.
• Hands-on experience in Python, PyTorch, distributed training, and large-scale data processing.
• Ability to solve complex problems and collaborate across functions; track record of driving projects to high-quality execution.

Nice to have

• Experience with LLM post-training, multimodal understanding, AI Agents, or Trust & Safety systems.
• Publications at academic conferences such as NeurIPS, ICML, ICLR, CVPR, ECCV, ICCV, ACL, EMNLP, NAACL, Interspeech, or ICASSP.

Tools

Python, PyTorch, Transformer architectures, LLMs, MLLMs, SFT, RLHF, DPO

AI focus

Develop content safety systems using LLMs, MLLMs, multimodal reasoning, AI Agents, and video understanding, including post-training and safety alignment.