# Siva Yellamraju

> Siva Yellamraju is the co-founder and CEO of Fourier, a Palo Alto hydrogen startup building modular, software-controlled electrolyzers no bigger than two server racks. A four-time founder whose previous companies were acquired by Apple, Google, and Polycom, he spent a career in cameras and video before turning a 10-15% side exploration into a clean-energy company. Fourier treats hydrogen production as a data-optimization problem, aiming to deliver on-site hydrogen at $6-7/kg. The company raised an $18.5M Series A led by General Catalyst and Paramark Ventures in April 2025.

- **Role:** Co-Founder & CEO at Fourier
- **Organizations:** Fourier, Apple, Google, Polycom, Akruta, Baarzo, ViVu
- **Nationality:** Indian / American
- **Education:** BTech, Computer Science and Engineering, Indian Institute of Technology, Guwahati, MBA, Stanford University
- **Known for:** Four-time founder with three acquisitions (Apple, Google, Polycom), Contributed to iPad's Center Stage and iPhone Portrait and Cinematic camera modes at Apple, Ran YouTube engineering at Google after the Baarzo acquisition

## Career timeline

- **2007** — Co-founded ViVu (browser-based video conferencing, pre-Zoom), later sold to Polycom
- **2011** — Director of Engineering at Polycom following the ViVu acquisition
- **2013** — Co-founded Baarzo, applying deep CNNs to video/audio/image understanding
- **2014** — Joined Google as an engineer after Baarzo's acquisition; worked on YouTube engineering
- **2017** — Co-founded Akruta, a smart speaker with a 360-degree camera
- **2019** — Joined Apple after Akruta's technology merged in; worked on Portrait, Cinematic, and Center Stage camera features
- **2022** — Co-founded Fourier to make hydrogen universally accessible
- **2025** — Raised $18.5M Series A led by General Catalyst and Paramark Ventures
- **2026** — Partnered with Payal Industrial Park to deploy hydrogen-based energy storage in Dahej, Gujarat

## Achievements

- Four-time founder with three acquisitions (Apple, Google, Polycom)
- Contributed to iPad's Center Stage and iPhone Portrait and Cinematic camera modes at Apple
- Ran YouTube engineering at Google after the Baarzo acquisition
- Raised $18.5M Series A for Fourier from General Catalyst, Paramark, Airbus Ventures, Borusan Ventures, GSBackers, MCJ Collective, and Positive Ventures
- Built modular hydrogen electrolyzers targeting $6-7/kg, roughly half current market price

## Latest updates

- **2026-06** — Fourier partnered with Payal Industrial Park to deploy a hydrogen-based energy storage system in Dahej, Gujarat, India.
- **2025-04** — Fourier raised an $18.5M Series A led by General Catalyst and Paramark Ventures, with Airbus Ventures and others participating.

## Links

- Website: https://fourier.earth
- LinkedIn: https://www.linkedin.com/in/siva-yellamraju/

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Profile page: https://yespress.io/siva-yellamraju
Published by YesPress — https://yespress.io
Last updated: 2026-06-04