Mobile Engineer

Responsibilities
TikTok is the leading destination for short-form mobile video. Our mission is to inspire creativity and bring joy. TikTok has global offices including Los Angeles, New York, London, Paris, Berlin, Dubai, Singapore, Jakarta, Seoul and Tokyo.

Why Join Us
Creation is the core of TikTok's purpose. Our platform is built to help imaginations thrive. This is doubly true of the teams that make TikTok possible.
Together, we inspire creativity and bring joy - a mission we all believe in and aim towards achieving every day.
To us, every challenge, no matter how difficult, is an opportunity; to learn, to innovate, and to grow as one team. Status quo? Never. Courage? Always.
At TikTok, we create together and grow together. That's how we drive impact - for ourselves, our company, and the communities we serve.
Join us.

The Business Risk Integrated Control (BRIC) team of TikTok, is missioned to:

- Protect TikTok users, including and beyond content consumers, creators, advertisers.
- Secure platform health and authenticity of community experience.
- Collaborate with cross-functional stakeholders to improve TikTok infrastructures, services, tools and algorithms, towards a higher standard of privacy and security.

The BRIC team works to measure and minimize the damage implied by inauthentic behaviors on TikTok and its extended platforms, covering multiple classical and novel interity/security areas such as fake account, fake traffic, spam, scraping, cyberbullying, live room risks, incentive fraud, monetization abuse, etc.

**In this team, you will have a unique opportunity to**:

- Have a first-hand experience contributing to TikTok's key security initiatives.
- Build scalable, resilient, intelligent integrity solutions that are also privacy-safe and user-friendly.
- Solve product and technical challenges that are often first-seen and highly adversarial. Both quick short term tactics and long term strategical moves are expected at various paces.
- Be part of a diverse and enthusiastic global workforce, grow with and learn from security and integrity experts across Asia, Europe, North America, etc.

**Job Description**:

- Responsible for the development, iteration, maintenance and technical support of risk control security of mobile components
- Responsible for the performance optimizations of risk control mobile products;
- Competitive product analysis and product technology breakthrough
- Work together with other stakeholders to research malicious tools, identify newest attacks and build anti-automation measures.

**Qualifications**:

- Strong interest in Information Security
- Computer science related majors, bachelor degree or above, more than 2 years of working experience
- Deep understanding of Android or iOS systems and proficient in (at least one): Java, Objective-C, Swift, C/C++. With solid programming skills and good coding habits;
- Familiarity with common mobile app protection methods, including but not limited to obfuscation, confusion, reinforcement, anti-debugging, anti-injection, etc.;
- Familiarity with the common cheating methods of blackhat and grayhat hackers, and have the priority to oppose practice;
- Experience with mobile infrastructure or app performance optimization is a plus;
- Have a good team spirit and a sense of proactive communication

TikTok 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 TikTok, 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.