Qifan Zhang

Android Developer @ TikTok

Qifan Zhang is an Android engineer at TikTok, where he focuses on building scalable, high-performance content creation experiences. With experience working on complex legacy codebases, Qifan has applied Jetpack Compose extensively in large-scale production projects. He is passionate about developer experience, migration strategy, and crafting smooth user interfaces at scale.

From Debugging to Real-World Tuning: A Practical Guide to Compose Performance

How can we achieve performance for Jetpack Compose that is monitorable, measurable, replicable, and sustainably improved in an ultra-large-scale Android project with tens of millions of DAUs and thousands of collaborating developers? In this talk, we will draw on real-world business scenarios from TikTok to share our methodology and implementation for achieving this goal: 1. quickly expose bottlenecks and pinpoint issues during the debugging stage 2. build a unified performance measurement and monitoring system to make data-driven decisions 3. engineer and standardize optimization approaches and integrate them into daily development workflows 4. leverage reusable tools and practices to scale performance improvements from isolated cases to the entire team and codebase.