Machine Learning Engineer Manager Trust and Safety

Responsibilities

Our Trust and Safety RD team is fast-growing and responsible for building machine learning models and systems to identify and defend internet abuse and fraud on our platform. Our mission is to protect billions of users and publishers across the globe every day. We embrace state-of-the-art machine learning technologies and scale them to detect and improve the tremendous amount of data generated on the platform.

With the continuous efforts of our team, Tik Tok can provide the best user experience and bring joy to everyone in the world.

We are looking for people like you with solid experience in designing and deploying state-of-the-art models in the combination of NLP and CV-related areas. This position will work with a team of excellent research scientists and machine learning engineers who can take initiative, design and develop advanced machine learning solutions, and deploy them directly to Tik Tok s global platform.

• Build efficient content recognition models for critical scenarios such as CSAM (Child Safety), CBS (Cross-border Sync), and Misinformation, to enhance the automation capability of content moderation.
• Address challenges in cross-lingual, multimodal, and low-resource environments to improve model generalization under complex compliance constraints.
• Collaborate with Recommendation, Policy, and Product teams to develop joint safety strategies, enabling flexible governance from content recognition to traffic control.
• Participate in the full-stack development process—from data curation and strategy modeling to model deployment—to continuously improve system response speed and compliance granularity.

Minimum Qualifications:

• Experience in multimodal algorithm development, with exposure to large model applications in real-world scenarios; familiarity with content moderation tasks; modeling experience in safety or compliance domains is preferred.
• Strong understanding of compliance-driven requirements, with the ability to abstract policy needs and translate them into practical technical solutions.
• Skilled in cross-functional collaboration, capable of driving joint policy design and integrated system implementation.

Preferred Qualifications:

• Publications in top conferences (e.g., NeurIPS, ICML, ICLR, CVPR, ICCV) or experience in competitive AI challenges.
• Highly responsible and self-motivated, with a strong interest in content safety technology and the ability to adapt to the fast-evolving landscape of risk governance.

Tik Tok is the leading destination for short-form mobile video. At Tik Tok, our mission is to inspire creativity and bring joy. Tik Tok s global headquarters are in Los Angeles and Singapore, and we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.

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.

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 inspire creativity and bring joy. To achieve that goal, we are committed to celebrating our diverse voices and to creating an environment that reflects the many communities we reach.

We are passionate about this and hope you are too.

Tik Tok is committed to…