Data Scientist, Platform Responsibility - USDS

Responsibilities
About the team
Join our team and leverage the power of data science to directly safeguard content, users, and privacy on Tik Tok. You will provide critical data-driven insights for platform responsibility and safety initiatives, including video content safety, live content safety, account security, privacy compliance, and moderation platforms, ultimately enhancing the safety experience for millions of users worldwide.

Main Responsibilities
- Design, build, and maintain core metrics systems and detection engineering data pipelines related to platform content safety and risk, including but not limited to content violation, user report, and account risk identification. Develop comprehensive monitoring and detection systems to quickly identify and analyze security incidents, providing data support for risk alerts and policy adjustments.
- Apply rigorous statistical methods, including A/B testing, causal inference, regression analysis, and more, to evaluate the effectiveness of security policies. You will deeply analyze experiment results, provide quantitative evidence for business decisions, and continuously optimize experiment design to improve evaluation efficiency.
- Develop quantitative analysis systems for specific business challenges and leverage data mining techniques to identify potential optimization opportunities. You will work closely with product, operations, R&D, and algorithm teams to translate analytical insights into actionable improvements and drive their implementation, ultimately improving platform safety.
- Continuously explore and summarize data analysis methodologies, create reusable analysis frameworks and tools to improve the overall analytical capabilities of the team. Participate in the design and iteration of data products, productizing data analysis capabilities to provide business teams with more efficient and convenient data services.
- Leverage AI & LLM techniques to increase efficiency and quality of the operational workflows.

Qualifications


Minimum Qualifications :
- 2+ years of data science experience, with experience in Internet/content platform safety business. Master s degree or above in statistics, data science, computer science, operational research, mathematics, or a related field.
- Proficient in SQL, skilled in using data analysis tools such as Python, and possesses excellent visualization skills. Familiar with common machine learning algorithm principles and understands methods such as causal inference and A/B testing.
- Possesses excellent logical thinking, problem analysis and solving abilities, as well as good communication, expression, and cross-team collaboration & project management skills.



Preferred Qualifications :
- Experience in content security, integrity, or risk management is preferred.

About USDS
Tik Tok USDS Joint Venture LLC is dedicated to the safety and security of millions of Americans who create, discover, and connect with what they love on the apps we operate. The Joint Venture has been established in compliance with the Executive Order signed by President Trump on September 25, 2025. Our foundation is a comprehensive data privacy and cybersecurity program we operate under defined safeguards to protect national security and secure U.S. user data, apps and the algorithm.

We safeguard the U.S. content ecosystem, holding decision-making authority for trust and safety policies and moderation. USDS Joint Venture helps ensure Americans can continue to express their creativity, discover new hobbies and interests, and build thriving communities and businesses on a global scale.

On-site presence across teams allows the company to operate with greater speed, alignment, and agility — especially in areas like real-time decision-making, team development, and integrated execution. As such, the company is shifting from a hybrid work model to a fully in-person schedule up to 5 days a week.

Why Join Us
Inspiring creativity is at the core of Tik Tok s mission. Our innovative product is built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and bring joy - a mission we work towards every day.
We strive to do great things with great people. We lead with curiosity, humility, and a desire to make impact in a rapidly growing tech company. Every challenge is an opportunity to learn and innovate as one team. We re resilient and embrace challenges as they come. By constantly iterating and fostering an "Always Day 1" mindset, we achieve meaningful breakthroughs for ourselves, our company, and our users.

When we create and grow together, the possibilities are limitless. Join us.

Diversity & Inclusion
Tik Tok is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. Our platform connects people from across the globe and so does our workplace. At Tik Tok, our mission is to…