# Demetrios (Dimi) Kellari

> Demetrios (Dimi) Kellari is the co-founder and CEO of Neion Bio. An engineer and company builder based in Brooklyn, he previously worked in aircraft research, shared solar, product and strategy at X, infrastructure investing at Sidewalk Infrastructure Partners, and product, systems and technology leadership at Cavnue. His MIT aircraft-design thesis received the Technology and Policy Program’s 2016 Best Thesis Award.

- **Role:** Co-Founder & CEO at Neion Bio
- **Organizations:** Neion Bio, Cavnue, Sidewalk Infrastructure Partners, X, the moonshot factory, McKinsey & Company, Massachusetts Institute of Technology, CERN, Airbus, Potluck Energy, New System Ventures, Radiant Intel
- **Education:** Master of Engineering in Aerospace, Aeronautical and Astronautical Engineering, Imperial College London, S.M. in Technology and Policy, Massachusetts Institute of Technology
- **Known for:** MIT Technology and Policy Program Best Thesis Award, 2016., Co-author of The influence of technology trends on future aircraft architecture, published in Journal of Aircraft in 2017., Co-founded Cavnue and Neion Bio.

## Career timeline

- **2011-2012** — Aerospace engineering work at Airbus in Bristol, as listed in his public professional history.
- **2013** — Mechanical and materials engineering work at CERN.
- **2014-2016** — Research at MIT; worked on Potluck Energy during his graduate years.
- **2016** — Received MIT Technology and Policy Program Best Thesis Award for aircraft architecture research.
- **2016-2019** — Senior analyst at McKinsey, according to his professional history.
- **2018-2020** — Product and strategy roles at X, the moonshot factory.
- **2020-2021** — Investor at Sidewalk Infrastructure Partners.
- **2021-2024** — Co-founder and head of product, systems and technology at Cavnue, according to his professional history.
- **2024** — Co-founded Neion Bio; also listed as an advisor to New System Ventures.
- **2026** — Neion Bio publicly launched in March and announced a $23 million Series A in June.

## Achievements

- MIT Technology and Policy Program Best Thesis Award, 2016.
- Co-author of The influence of technology trends on future aircraft architecture, published in Journal of Aircraft in 2017.
- Co-founded Cavnue and Neion Bio.
- Neion Bio announced a $23 million Series A led by Caffeinated Capital in June 2026.

## Latest updates

- **2026-03** — Neion Bio emerged from stealth on March 26.
- **2026-06** — Neion Bio announced a $23 million Series A led by Caffeinated Capital.
- **2026-09** — Kellari and Sam Levin appeared on Free Radicals; the episode was published September 1.
- **2026-10** — An October 2 Rockefeller University feature described Neion’s use of the Ford Center Incubator and team growth from 3 to 20 over the previous year, according to the founders.

## Links

- LinkedIn: https://www.linkedin.com/in/demetrioskellari
- Twitter/X: https://x.com/Dimkell

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Profile page: https://yespress.io/demetrios-kellari
Published by YesPress — https://yespress.io
Last updated: 2026-10-11