Open to opportunities

Nathan User

@nathanuser14

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I build real-time audio, communications, firmware, and cross-platform systems.

United States

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What I'm looking for

I'm looking to own complex, latency-sensitive systems from prototype through release, especially in real-time audio, communications, firmware, device integration, and cross-platform products.

I've optimized Webex real-time audio across Windows, macOS, iOS, and Android for a conferencing product used by millions daily. At Cisco, I also implemented client-side signaling and Bluetooth LE flows that connected hardware sensor inputs with cloud conferencing experiences.

At BabbleLabs, I built Windows and macOS virtual audio drivers, owned C#/.NET and Objective-C desktop applications, and delivered the real-time speech-separation prototype that helped validate the company’s core technology ahead of its Cisco acquisition.

Across Bowers & Wilkins, Doppler Labs, Qualcomm, and Kalloc Studios, I've shipped media systems, FreeRTOS firmware, USB update tooling, VoLTE and ViLTE features, and PS3 game systems. I enjoy owning complex systems from prototype through release, especially where latency, protocols, device integration, and platform-specific behavior matter.

Experience

Work history, roles, and key accomplishments

Technical Lead

Cisco

Oct 2020 - Oct 2025 (5 years)

Optimized and audited Webex client real-time audio engine behavior across Windows, macOS, iOS, and Android, improving low-latency performance for a high-volume conferencing product used by millions of daily users. Implemented client-side signaling and Bluetooth LE protocol flows for multi-participant colocation features.

C++Webex Windows MacOS iOS Android Signals Performance Optimization