Cross device connectivity re-architecture

Microsoft | Phone Link

Handpicked as the engineering lead for phone calling in Microsoft’s newly formed Phone Link team (then Your Phone), I architected and built the feature from the ground up—delivering full Bluetooth-based calling between Windows PCs and Android phones. This marked one of the first major capabilities in Microsoft’s cross-device initiative, and rapidly scaled to millions of users worldwide. Leveraging the Bluetooth HFP infrastructure I had previously implemented at the OS level, I created a fully native calling experience within the Phone Link app. I led development of the end-to-end stack, including device onboarding via Bluetooth pairing, real-time call controls (dial, answer, mute, hang up), contact sync, and call history. I also collaborated closely with PM and Design to define the user journey and ensure a polished, Windows-aligned UX. The feature was instrumental in establishing Phone Link as a flagship experience for Android + Windows integration, earning widespread media attention—including The Verge’s 2020 coverage and early previews. Today, it continues to serve as a foundational feature used by millions of users to stay connected across devices.