TikTok's User Growth team leads growth initiatives for TikTok and all its platforms (. TV, Lite, Web, with a data-driven and results-focused engineering and product mindset. We are seeking talented individuals who enjoy the intersection of product, data, design, and engineering to help us reach the next milestone of billions of users. You'll have the opportunity to build best-in-class onboarding experiences for our users as well as define A/B testing frameworks to measure and improve user retention rate. We encounter a diversity of technical challenges, allowing you to get a firsthand look at what technologies the most innovative organizations are using and be able to build up a bottom-up growth strategy from scratch. You'll be joining a full-stack team that can leverage all of TikTok's existing frameworks and be a part of designing and implementing new techniques and foundation work that can further improve user experience and showcase TikTok's value proposition. As a Senior iOS Engineer for the User Growth team, you will: • Leverage data to understand our users and our product in-depth, identify areas of opportunity and execute projects to drive user growth, retention, and/or engagement Design, implement the new-user features of our mobile application. • Collaborate with the design and product teams to create a world-class mobile experience. • Analyse and optimize iOS applications for efficiency and performance. • Promote robust and maintainable code, clear documentation, and deliver high-quality work on a tight schedule.

Minimum Qualifications: • BS/MS degree in Computer Science or equivalent majors. • Strong understanding of software development principles, capabilities, and limitations of iOS platform. • Proficiency in Objective-C or Swift. • Ability to understand and debug large and complex code bases. • Good team communication and collaboration skills. • Passion and experience building consumer-facing products is a huge plus; We would love to hear about apps you've developed!