Yuichi Fukunaga

Technologist. Based between Tokyo and San Francisco.

🧬 Co-founder, Taxa

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I’m a Japan-born technologist building at the intersection of biotechnology, markets, and public policy, building technologies that allow non-linear leaps rather than incremental progress.

After a semester at Keio University, I moved to the U.S. to study psychology and neuroscience, graduating with Highest Honors from Williams College. I’ve worked across healthcare and preventive medicine at M3 and Ubie, conducted memory research at RIKEN, and entered the PhD program at the Max Planck Institute for Brain Research before leaving academia to build in San Francisco.

Today, I am a co-founder at Taxa Technologies to invent new personal-care categories through skin microbiome engineering and to deliver them with our D2C medical platform.

Penna et al. (2026) Multiple-Context Training Enhances Generalization of Cued Fear Extinction and Requires the Dorsal Hippocampus. BioRxiv.
Su and Fukunaga et al. (2025) No effect of partial reinforcement on fear extinction learning and memory in C57BL/6J mice. Learning and Memory.

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