Perseus Defense
YC S25Austin, US · Founded 2025 · 3 employees · Hiring · 8 known investors
Perseus Defense builds autonomous defense systems. The company focuses on next-generation autonomous technologies for defense applications.
Also known as Perseus Defense
Founders & leadership· Y Combinator alumni (S25)
Perseus Defense was founded in 2025 by Jason Cornelius and Steve Messinger.
Investors · 8
Also in the syndicate · 2
Funding
SEC filings, press & company announcements- Undisclosed amountseed roundSep 2025 · 2 sources
Alumni Ventures, Bow Capital, Lobster Capital, Multimodal Ventures, Pioneer Fund, Rebel Fund, Sparkwave Capital
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026Perseus Defense develops counter-unmanned aerial system (C-UAS) hardware intended for U.S. Department of War and Homeland Security customers. Its stated mission is to enable mass production of micro-guided missiles that are affordable, scalable and portable, addressing the cost imbalance of intercepting inexpensive drones. The company positions its systems against Group 1 and Group 2 drone classes, which it describes as the categories most commonly used in one-way attack roles.
The product line comprises two disclosed elements. The Harpe interceptor is a kinetic missile roughly 24 inches long with a stated range of about 2 km and a target cost of under $10,000 per shot; the company states it has been flown in testing. The Perseus launcher is a portable, lightweight system weighing under 80 lb, with a stated setup time of under 60 seconds and 24-hour operation. Integrated tracking and engagement are combined in a single system, and launchers can be fielded singly or in a distributed architecture: units are deployed and powered, mesh with nearby launchers, receive targeting data from command-and-control or sensor systems, synchronize to build an engagement envelope, and then fire one or more missiles at the target. Systems are described as deployable in the field or mounted on vehicles.
Business model
Perseus Defense designs and intends to mass-produce counter-UAS interceptors and launcher hardware for government defense and homeland security buyers, with a stated per-shot cost target below $10,000.
Traction
The company states its Harpe interceptor has been proven in flight and publishes test footage. Its newsroom references exercise Golden Shield, a 1st Cavalry Division-led event at which counter-UAS capability providers tested new technologies.
▸Full profile — market position, technology, go-to-market, geography
Market position
Perseus Defense addresses the counter-drone segment, framing its offering against the practice of intercepting low-cost drones with far more expensive missiles.
The company frames its approach around cost and portability: micro-guided missiles priced under $10,000 per shot, optimized specifically for Group 1 and Group 2 drones, in a lightweight launcher that can be deployed by a single unit or distributed across a battlespace.
Technology
A portable kinetic missile interceptor system combining tracking and engagement in one unit. The Harpe interceptor is a micro-guided missile of approximately 24 inches with roughly 2 km range. The modular Perseus launcher meshes with nearby launchers, ingests targeting data from C2 or sensor feeds, synchronizes engagement envelopes across networked units, and supports autonomous operation, with system weight under 80 lb and setup in under 60 seconds.
Go-to-market
The company states it builds counter-UAS systems for the U.S. Department of War and Homeland Security.
Geography
Operations are based in Buda, Texas, United States, with the company describing itself as built in Texas.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Competitors · 3
by search overlapCompanies competing with Perseus Defense for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
▸Research sources · 1
primary sources listed
- Perseus Defenseperseusdefense.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Perseus Defense do?
- Texas-based developer of low-cost counter-UAS missile interceptors and portable launchers for U.S. defense customers.
- Who founded Perseus Defense?
- Perseus Defense was founded by Jason Cornelius, Steve Messinger in 2025.
- Who are Perseus Defense's investors?
- Perseus Defense's investors include Bow Capital, Lobster Capital, Olive Tree Capital, Y Combinator, Alumni Ventures, Rebel Fund.
- Where is Perseus Defense headquartered?
- Perseus Defense is headquartered in Austin, US.


