I am a first-year PhD student in Computer Science at the University of Maryland, Baltimore County (UMBC), where I work in the Future Sensing and Interaction (FSI) Lab with Dr. Dong Li. My research develops smartphone-based methods for cardiovascular health sensing, combining digital signal processing, acoustic sensing, and machine learning to bring meaningful health insights to everyday devices.

Before starting my PhD, I spent over five years as a Senior iOS Engineer at Gojek and Nuclei, building large-scale mobile applications used by millions of users. I am especially interested in research that bridges low-level sensing with real-world, deployable mobile systems that reach people who need them.

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[Emerging Ideas] Phonotonos: Through-Skin Ultrasonic Blood Flow Sensing Using Smartphones

Shirui Cao, Jie Xiong, Rishav Gupta, Sunghoon Ivan Lee, Jeremy Gummeson, Dong Li

ACM MobiSys 2026

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