# Eunjoon “EJ” Cho

> Eunjoon “EJ” Cho is the co-founder and CEO of Tofu, a B2B marketing platform founded in 2023 with Honglei Liu and Elaine Zelby. A Stanford electrical engineering PhD with experience at Google, Meta and Affirm, Cho drew on the difficulty of marketing an earlier startup to build software for personalized campaigns across channels. Tofu announced a $5 million seed round in October 2023 and a $12 million Series A in February 2025.

- **Role:** Co-founder & CEO at Tofu
- **Organizations:** Tofu, Google, Meta, Affirm, Bolt Communications
- **Education:** MS, Electrical Engineering, Stanford University, PhD, Electrical Engineering, Stanford University
- **Known for:** Co-founded Tofu and led the company through a $5 million seed round and a $12 million Series A., Tofu reported 12x revenue growth and 36x growth in generated content over the year preceding its February 2025 announcement., Tofu’s publicly named customers include Check Point, RingCentral and Bluecore.

## Career timeline

- **2013** — Completed a Stanford electrical engineering PhD and joined Google’s speech team, working on neural networks for speech transcription.
- **2018** — Founded Bolt Communications to develop a correction interface for speech recognition.
- **Before 2023** — Worked at Meta and served as Director of Engineering at Affirm; exact employment dates are not established here.
- **2023** — Co-founded Tofu with Honglei Liu and Elaine Zelby.
- **2023-10** — Tofu announced a $5 million seed round led by Index Ventures.
- **2024-11** — Appeared on Gaurav Kotak’s AI Unveiled to discuss personalized B2B content and AI marketing workflows.
- **2025-02** — Tofu announced a $12 million Series A led by SignalFire, with HubSpot Ventures and other investors participating.
- **2025-04** — Listed as a speaker for AI User Conference sessions on autonomous campaigns and personalized landing pages.

## Achievements

- Co-founded Tofu and led the company through a $5 million seed round and a $12 million Series A.
- Tofu reported 12x revenue growth and 36x growth in generated content over the year preceding its February 2025 announcement.
- Tofu’s publicly named customers include Check Point, RingCentral and Bluecore.
- Earned an electrical engineering doctorate at Stanford.

## Latest updates

- **2025-02** — Announced Tofu’s $12 million Series A and reported 12x revenue growth over the previous year.
- **2025-04** — AI User Conference listed Cho for April 15 talks and a workshop on autonomous campaigns and personalized landing pages.

## Links

- Website: https://www.tofuhq.com/
- LinkedIn: https://www.linkedin.com/in/ej-makes-tofu/

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Profile page: https://yespress.io/ej-cho
Published by YesPress — https://yespress.io
Last updated: 2026-10-20