# José M. Mejía Oneto

> José M. Mejía Oneto is the Peruvian founder and CEO of San Francisco-based Shasqi. A Macalester graduate with a doctorate in organic chemistry from Emory and an MD from the University of Minnesota, he joined Y Combinator’s Winter 2015 batch and built the company with colleagues including his former college roommate Sebastian Sanchez de Lozada.

- **Role:** Founder and CEO at Shasqi
- **Organizations:** Shasqi, Tambo, Y Combinator, Macalester College, Emory University, University of Minnesota, University of California, Davis
- **Nationality:** Peruvian
- **Education:** Undergraduate studies in biology and chemistry, Macalester College, PhD in organic chemistry, Emory University, MD, University of Minnesota Medical School
- **Known for:** Founded and leads Shasqi., Participated in Y Combinator’s Winter 2015 batch., Led Shasqi during its announced $10 million Series A and $50 million Series B financings.

## Career timeline

- **2001** — Graduated from Macalester College.
- **2014** — Left residency training to pursue the venture that became Shasqi; watched Startup School talks to learn company basics.
- **2015** — Participated in Y Combinator Winter 2015 with Tambo, according to his YC biography.
- **2017** — Recruited former Macalester roommate Sebastian Sanchez de Lozada to join the company.
- **2018** — His YC biography identifies Shasqi as a Tambo spinoff in this year.
- **2019** — Shasqi announced a $10 million Series A on October 31.
- **2021** — Shasqi announced a $50 million Series B on November 11.
- **2023** — Shasqi announced a Johnson & Johnson Enterprise Innovation research collaboration in June and its expansion in October.
- **2025** — Shasqi appointed Roger Dansey to its board on October 1.

## Achievements

- Founded and leads Shasqi.
- Participated in Y Combinator’s Winter 2015 batch.
- Led Shasqi during its announced $10 million Series A and $50 million Series B financings.
- Built a research collaboration with Johnson & Johnson Enterprise Innovation.

## Latest updates

- **2025-10** — Welcomed Roger Dansey to Shasqi’s board, emphasizing the value of his prior Pfizer and Seagen experience.
- **2025-07** — Published a LinkedIn article discussing the question that motivated founding Shasqi.

## Links

- Website: https://www.shasqi.com/
- LinkedIn: https://www.linkedin.com/in/joseperu/

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Profile page: https://yespress.io/jose-m-mejia-oneto
Published by YesPress — https://yespress.io
Last updated: 2026-10-25