Vernius Systems has collected more than $580 million in letters of intent for radar technology designed to transform inexpensive commercial drones into autonomous interceptors, the three-person startup disclosed through its Y Combinator profile in late September. The San Francisco team's pitch centers on a dramatic cost reduction: bringing down the price of a single intercept from $4 million to under $4,000.
That math matters. Over Ukraine, Patriot missiles—each costing roughly $4 million—have been fired at Iranian Shahed drones with reported estimates varying widely in value, a dynamic that rankled defense analysts and prompted a July Congressional Research Service report to call the economics unsustainable. The Pentagon appears to agree. It requested $3.1 billion for counter-drone systems in its fiscal 2026 budget, according to a senior defense official who briefed reporters last June.
Whether Vernius can deliver on those promises remains an open question. Letters of intent, after all, are not binding contracts. The company declined to disclose how much funding it has raised or whether any of those IOUs have converted into actual orders.
Radar Seekers for the Drone Wars
The core product is called Archimedes, a radar seeker built around 24 GHz phased array technology that guides interceptor drones toward targets beyond visual range before handing off to vision-based systems for the final strike. An 80-millimeter version fits first-person-view racing drones repurposed as interceptors. A larger 120-millimeter variant is intended for ground vehicles and unmanned systems. The company also mentioned a third product, Barca 1, which it said remains classified.
Vernius posted a job listing in late September seeking engineers capable of pushing 1,000 radar seeker circuit boards through assembly lines within 90 days. The goal, the posting stated, was monthly production of 10,000 interceptors.
The startup said it is working with "the largest interceptor manufacturers in Ukraine," though no confirmation of these partnerships could be located in verified company materials. Third-party LinkedIn posts from August referenced integration with Ukraine's STING interceptor, but no confirmation from Ukraine's defense ministry could be located.
Who's Behind It
CEO Arthur Nguyen-cao comes from Defense Tech for Ukraine, where he led a 14-person engineering team. Before that, he worked on U.S. Air Force B-52 radar proposals and spent over six years designing RF circuit boards. His co-founder, CTO Hisham El-Halabi, was a founding engineer at fintech startup Suave Money and holds an engineering science degree from the University of Toronto.
The third member of the team, COO Joe Gonzalez, previously held Q clearance as a solutions architect at Sandia National Laboratories, where he worked on secure communications for the Navy's Tomahawk missile fleet.
Y Combinator listed several backers, including retired Lieutenant General H.R. McMaster, Austin Howard, and Rob Lee, a defense analyst who has become a fixture in commentary on the war in Ukraine.
A Crowded Field
Vernius is entering a market projected to nearly triple in size over the next five years. MarketsandMarkets estimated in July that the counter-drone sector would grow from $9.17 billion this year to $29.7 billion by 2031.
The competition includes some well-established players. Raytheon's Coyote Block 2 and Block 3 interceptors use radar guidance, though the company does not disclose unit costs. The Army awarded rapid acquisition contracts for Coyote systems in January 2024. Anduril's Anvil interceptor, demonstrated in multiple U.S. military exercises through March, incorporates millimeter-wave radar according to a June Congressional Record entry. Fortem Technologies secured a multimillion-dollar Department of Homeland Security order for its DroneHunter system ahead of the FIFA World Cup, the company announced in February.
Smaller competitors are also moving into the space. Powerus markets a Guardian interceptor family that includes what the company describes as a "radar-based seeker entering service," though independent verification of those claims was not available. In September, Arbe Robotics, which makes automotive radar systems, announced its Alerion counter-drone radar, adding pressure in the detection layer of the market.
Faster Threats
The urgency around radar-guided interceptors has grown as drone threats have evolved. Russia ramped up deployment of jet-powered Geran-4 and Geran-5 drones through the summer, with some sources suggesting jet variants could soon outnumber propeller-driven models, according to Ukrainian outlet Militarnyi and Euronews reporting from early July. Higher speeds make vision-only guidance systems less effective at close range, creating an opening for radar-based seekers that can track targets from farther out.
"Novel interceptor drones bend air defense economics in Ukraine's favor," Air Force Times wrote in March, citing Ukrainian officials on sortie volumes. A Congressional Budget Office report released in July recommended layered counter-drone systems combining radar, radio frequency detection, and kinetic interceptors as the most affordable way to protect military installations.
Vernius said its letters of intent come from prime contractors in Ukraine, the European Union, and the Middle East. How many of those expressions of interest will translate into actual revenue remains to be seen. For now, the startup is racing to prove it can manufacture at scale while the window for venture-backed defense tech remains open.
