Prox

Active · Air-breathing hypersonics for scale.

YC F25

Website YC profile

Why it ranks

How the rank works

9signal of 100 · rising 8

went through YCProgram · this site+4
team of 3Team size · YC's directory+3.1
hiringHiring · Titles (titles.fru.dev), YC+2

A sum of public facts, not a judgement and not investment advice.

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Founders

Dima YanovskyFounder
Gregory MakodzebaFounder

About Prox

Parity is a moving target. Every advance in offense prompts a response in defense, and every response starts another race. The West cannot take military superiority for granted. It has to keep building, fielding, and improving technology at scale. We believe hypersonics at scale can be the West's ultimate equalizer. Our mission is to give the United States and its allies the capacity to close capability gaps and sustain credible deterrence as threats evolve. Prox is developing a stand-in attack weapon platform powered by solid-fuel ducted ramjet propulsion (SFRJ), with repeatable production at the center of the effort. Based in Hawthorne, California. useprox.com

YC batch: F25 · Fall 2025
Status, per YC: Active
Category: Other
Team size: 3
Location: Hawthorne, CA, USA
Founded: 2025
Checked: 6h ago

YC tags: Defense