Machine Learning Engineer - TikTok BRIC Live Integrity

About the Role

TikTok Live is a globally leading live streaming platform with hundreds of millions of users. Joining this team means engaging with highly complex scenarios involving large-scale operations and global adversarial challenges. This is an excellent opportunity to advance professionally by applying state-of-the-art AI technologies to practical applications, safeguarding both user safety and financial integrity across TikTok Live's ecosystem.

Key Responsibilities

• Lead initiatives to identify and mitigate risks associated with the TikTok Live ecosystem, including content and financial threats.
• Develop and refine risk detection models that prioritize accuracy and responsiveness, leveraging large-scale multimodal data from text, images, audio, and behavioral patterns.
• Investigate adversarial tactics and design resilient defense mechanisms to respond promptly to evolving threats.
• Implement advanced AI innovations such as AI Agents, fine-tuning of Large Language Models (LLMs), and multimodal modeling to enhance automated reasoning and decision processes in high-risk environments.

Qualifications

• Bachelor’s degree or above in Computer Science, Mathematics, Statistics, or related disciplines.
• Strong foundational knowledge in machine learning and deep learning algorithms, including classification, clustering, sequence modeling (e.g., XGBoost, DeepFM, Transformers).
• Proficient programmer skilled in Python, C++, or Go, with experience using major machine learning frameworks like TensorFlow or PyTorch. Experience in handling large-scale distributed systems is advantageous.
• Excellent logical reasoning and data sensitivity with a keen interest in risk control and adversarial challenges.
• Effective communication and team collaboration abilities.

Preferred Experience

• Hands-on experience constructing AI Agents for complex task execution, autonomous decision making, or tool utilization.
• Practical knowledge in fine-tuning Large Language Models via methods such as Supervised Fine-Tuning (SFT) and Reinforcement Learning with Human Feedback (RLHF), as well as deploying LLMs for specific business domains.
• Expertise in multimodal representation learning, video analytics, or cross-modal retrieval techniques.
• Previous exposure to domains like community content safety, trust & safety, or fraud prevention.

About TikTok

TikTok is a premier platform for short-form mobile video, headquartered in Los Angeles and Singapore with multiple offices worldwide. The company's mission is to inspire creativity and bring joy by enabling genuine self-expression and connection among diverse, global communities.

Why Work With Us

At TikTok, creativity fuels innovation. The organization fosters a collaborative and inclusive culture promoting curiosity, humility, and impactful growth. The team embraces challenges with resilience and continuous improvement under an "Always Day 1" mindset, driving meaningful innovation and success for users and employees alike.

Diversity and Inclusion

TikTok is dedicated to cultivating an inclusive environment that values diverse skills, experiences, and viewpoints. The company actively promotes an equitable workplace that mirrors its broad user base, reflecting a commitment to celebrating varied cultural voices and fostering mutual respect.