Senior Security Engineer (Multiple Positions)

About TikTok TikTok is the leading destination for short-form mobile video. At TikTok, our mission is to inspire creativity and bring joy. TikTok'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.

Why Join Us Inspiring creativity is at the core of TikTok'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.

About the Team Our team plays a crucial role in ensuring the company’s success. We seek people who are willing to learn and put in the effort to solve problems. Our challenges are not your regular day-to-day problems - you’ll be part of a team that’s developing new solutions to new challenges. It’s working fast, at scale, and we’re making a difference. We are looking for talents to join us on this exciting journey!

Responsibilities Drive the building of scalable and secure-by-design systems to ensure our applications are designed and implemented with the highest security and privacy standards, maintaining and enhancing user trust. Conduct reviews and analyze designs, architectures, existing systems, services, operating systems, networks and applications from a security perspective, via black box testing, code reviews, automation, threat modeling and research. Participate in the Software Development Life Cycle (SDLC) by performing security assessments of new application features. Work with cross-functional stakeholders to analyze new threat scenarios, identify security vulnerabilities, perform forensic analyses, and coordinate incident response and resolution. Conduct developer feedback interviews to optimize the SDLC. Mentor junior-level team members.