The USDS-Platform and Community Integrity (PaCI) team is missioned to protect U.S. TikTok users, including and beyond content consumers, creators, advertisers. The team aims to secure platform health and community experience authenticity while building infrastructures, platforms, and technologies. Collaboration with many cross-functional teams and stakeholders is essential. The PaCI team works to minimize the damage of inauthentic behaviors on TikTok platforms, covering multiple classical and novel community and business risk areas such as account integrity, engagement authenticity, anti-spam, API abuse, growth fraud, live streaming security, and financial safety. In this team, you'll have a unique opportunity to have first-hand exposure to the strategy of the company in key security initiatives, especially in building scalable and robust, intelligent and privacy-safe, secure, and product-friendly systems and solutions. The work involves developing novel solutions to first-seen challenges of a non-stop evolution of a phenomenal product ecosystem. The work needs to be fast, transferrable, while still down to the ground to make quick and solid differences. To enhance collaboration and cross-functional partnerships, the organization follows a hybrid work schedule that requires employees to work in the office 3 days a week, or as directed by their manager/department. The specific requirements may change at any time.