Company Directory

Defense Companies in Washington, D.C.

A curated directory of defense companies headquartered in Washington, D.C., with live hiring activity and funding context.

12 companies · Updated Sep 2026

Air

Series C+ · Arlington, VA

36 jobs

Coordinates defense readiness across development, production, sustainment, and delivery.

$177.4M raisedFunded Dec 2024
Forterra

Series C+ · Clarksburg, MD

31 jobs

Develops ground autonomy systems.

$575.6M raisedFunded Nov 2025
Twenty

Series B · Arlington, VA

28 jobs

Builds offensive cyber capabilities.

$168.1M raisedFunded Jul 2026
Bridge Defense

Washington, D.C.

25 jobs

Builds secure software, mission infrastructure, and deployable edge-computing systems for defense and intelligence customers.

Cape

Series C+ · Arlington, VA

24 jobs

Privacy-first mobile carrier built for secure communications.

$196.5M raisedFunded Mar 2026
Auterion

Series B · Arlington, VA

21 jobs

Open-source software platform for autonomous drones and defense systems.

$194.2M raisedFunded Sep 2025
Valinor Enterprises

Series A · Washington, DC

9 jobs

Building and buying critical defense and government technology for the modern battlespace.

$85M raisedFunded Jan 2026
Shift5

Series C+ · Arlington, VA

6 jobs

Secures the defense cyber stack.

$180.5M raisedFunded Sep 2025
Aslan

Seed · Washington, D.C.

Contesting and preventing national security threats at their digital source.

$20.3M raisedFunded Jul 2026
Brynhild Industries

Washington, DC

Defense innovation, deployable infrastructure, and AI-powered operator tools to protect American sovereignty.

How this list is built

BuildList includes active companies with a canonical sector and headquarters metro. Hiring counts come from verified openings collected directly from company applicant-tracking systems.

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