Senior ML Engineer for Risk & Integrity (Multimodal AI)

TikTok USDS Joint Venture; San Jose (CA); On-site; USD 187,000 - 360,000; Full time

Benefits offered by this job

Medical, dental and vision insurance

401(k) with company match

Parental leave and disability coverage

Paid holidays and Paid Personal Time

Job summary

TikTok USDS Joint Venture LLC is hiring a senior ML architect in California to lead architecture and governance for risk across the US platform. You will build cross-scenario risk representations from diverse data and integrate Generative AI and multimodal tech to improve decisioning and enforcement.

The role requires translating product goals into robust risk infrastructure, mentoring teams, and collaborating in a global, cross-cultural environment.

Qualifications

• Bachelor's degree in Computer Science, Mathematics, Statistics, or a related field.
• Solid foundation in Machine Learning; proficient in applying Transformer and GNN architectures to solve large-scale integrity challenges with social graph and behavior sequence data.
• Strong engineering and coding skills. Proficient in at least one language among Python, C++, or Go; familiar with distributed computing (e.g., Spark, Flink) and deep learning frameworks (e.g., PyTorch).
• A passion for building world-class risk infrastructure and the ability to communicate effectively in a global, cross-cultural environment.

Responsibilities

• Lead the algorithmic architecture and governance for TikTok US across key domains, including account integrity, incentive abuse, content safety, and financial risk, ensuring a fair and secure ecosystem for a billion-user community.
• Build high-precision, risk representation models leveraging massive heterogeneous data (video, live streams, audio, behavior sequences, and social graphs) to enable cross-scenario risk perception.
• Research and counter global adversarial threats and architect self-evolving defense systems that maintain robustness against rapid tactic shifts and data drift.
• Drive the integration of Generative AI and Multimodal technologies into the risk lifecycle; leverage LLMs and deep learning to solve complex adjudication and interpretability challenges.

Skills

Transformer architectures

GNN architectures

Python

C++

Go

Model evaluation systems

Communication in global teams

Risk infrastructure

Education

Bachelor's degree in Computer Science, Mathematics, Statistics, or related field

Tools

PyTorch

Spark

Flink

Job description

TikTok USDS Joint Venture LLC is hiring a senior ML architect in California to lead architecture and governance for risk across the US platform. You will build cross-scenario risk representations from diverse data and integrate Generative AI and multimodal tech to improve decisioning and enforcement.

The role requires translating product goals into robust risk infrastructure, mentoring teams, and collaborating in a global, cross-cultural environment.