Machine Learning Engineer (Content Ecology & Creator) -E-commerce Governance

Summary

TikTok is the leading destination for short-form mobile video, and they are seeking a Machine Learning Engineer to join their Governance & Experience Algorithm Team. This role focuses on ensuring the long-term health of TikTok Shop’s global platform by leveraging AI to manage creator governance, quality modeling, and ecosystem fairness.

Responsibilities

• Creator Governance & Quality Modeling
• Signal-Driven Creator Profiling: aggregated underlying multi-modal signals (e.g., static frames, low-aesthetic detection, piracy fingerprints) to build comprehensive Creator Quality Scores
• Combat Low-Quality & Malicious Intent: Develop sequence-based models to detect and penalize creators engaging in "low-effort selling," "re-recording/piracy," and "matrix account spamming," effectively purging the ecosystem of noise
• LLM & RAG Intelligent Governance: Build LLM + RAG systems that dynamic interpret complex governance policies. Develop agents that not only flag risky creators but provide explainable reasoning to guide creator education and improvement
• Graph Intelligence & Syndicate Detection
• Heterogeneous Graph Mining: Construct large-scale Heterogeneous Graphs (Creator-Product-Video-User) to uncover hidden relationships and organized bad actors (e.g., fake engagement rings, black-market account trading, sybil attacks)
• Cross-Domain Risk Propagation: Utilize graph algorithms to track how risk propagates across different scenarios (Content vs. Shelf) and markets, predicting where bad actors will migrate next
• Ecosystem Strategy, Fairness & Optimization
• Multi-Objective Optimization (MMoE/PLE): Develop advanced multi-task learning models to balance conflicting objectives—maximizing Ecosystem Prosperity and GMV while minimizing Governance Risk and User Complaints
• Fairness Algorithms: Design traffic regulation strategies that prevent the "rich get richer" effect for low-quality diverse content, ensuring fair exposure for high-quality, original creators

Skills

• Bachelor's degree or above in computer science or related field
• Proficient in Python/C++ with strong hands-on experience in PyTorch or TensorFlow
• Deep expertise in at least one of the following areas: NLP/LLM (Agents/Tuning), Graph Neural Networks (GNN), Sequence Modeling, or Machine Learning
• 1+ years of experience in Content Governance, Trust & Safety, Creator Ecology, or Advertising/Search/Recommendation
• Experience with RAG, DPO/RLHF, or Multi-Modal Representation Learning in a production environment is highly preferred
• You view problems through an ecosystem lens—caring about Health, Fairness, and Diversity, not just binary classification metrics (Precision/Recall)
• Ability to translate abstract business goals (e.g., 'Improve Creator Fairness') into concrete mathematical definitions and model targets
• Strong communication skills to articulate algorithmic strategies to Policy, Operations, and Product teams
• You enjoy the 'cat and mouse' game of outsmarting evolving bad actor techniques

Qualifications

Must Haves

• Bachelor's degree or above in computer science or related field
• Proficient in Python/C++ with strong hands-on experience in PyTorch or TensorFlow
• Deep expertise in at least one of the following areas: NLP/LLM (Agents/Tuning), Graph Neural Networks (GNN), Sequence Modeling, or Machine Learning
• 1+ years of experience in Content Governance, Trust & Safety, Creator Ecology, or Advertising/Search/Recommendation

Nice to Haves

• Experience with RAG, DPO/RLHF, or Multi-Modal Representation Learning in a production environment is highly preferred
• You view problems through an ecosystem lens—caring about Health, Fairness, and Diversity, not just binary classification metrics (Precision/Recall)
• Ability to translate abstract business goals (e.g., 'Improve Creator Fairness') into concrete mathematical definitions and model targets
• Strong communication skills to articulate algorithmic strategies to Policy, Operations, and Product teams
• You enjoy the 'cat and mouse' game of outsmarting evolving bad actor techniques

Benefits

• Employees have day one access to medical, dental, and vision insurance
• A 401(k) savings plan with company match
• Paid parental leave
• Short-term and long-term disability coverage
• Life insurance
• Wellbeing benefits
• Employees also receive 10 paid holidays per year
• 10 paid sick days per year
• 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure)