Team Introduction
The E-Commerce Risk Control (ECRC) team is responsible for securing TikTok's global e-commerce platforms, such as TikTok Shop and Toko. We safeguard buyers, sellers, creators, and the ecosystem from fraudulent, abusive, or malicious behavior. Our mission is to make TikTok the safest and most trusted online marketplace worldwide. We achieve this through: - Advanced machine learning systems to detect and prevent evolving business risks (., account takeovers, collusion, incentive abuse, brushing, click-farms); - A hybrid approach combining machine learning models, retrieval-augmented reasoning, and multi-agent decision-making systems; - Cross-functional collaboration with product, ops, security, and trust teams. What You'll Do - Develop and deploy machine learning models (supervised, unsupervised, hybrid) to proactively detect fraud, abuse, and anomalies across seller behavior, user interactions, and transactions. - Explore cutting-edge techniques including: - Retrieval-Augmented Generation (RAG) - LangChain-based agents for task decomposition and external knowledge integration - Design prompt engineering and reasoning workflows that connect structured features, risk indicators, and real-time LLM-based decisions. - Knowledge Distillation and BERT-style architectures - Build agentic workflows for complex cases, including modular task agents (., structured data retrieval, open-source search, logical reasoning, decision reflection) orchestrated via a central controller agent. - Work with large-scale behavioral datasets to uncover fraud signals, design monitoring pipelines, and propose new feature generation strategies. - Collaborate with risk ops, product managers, and infra engineers to transform insights into scalable and explainable risk control strategies. Why Join Us - Work on real-world, high-impact challenges in global risk mitigation - Be part of a cutting-edge ML + LLM team shaping the future of risk intelligence - Enjoy a culture of autonomy, innovation, and cross-disciplinary collaborationMachine Learning Engineer (LLM)- E-commerce Risk Control • Seattle
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