Momentus
Public
What they do:
The space infrastructure services company
Quick facts:
HQ: San Francisco, CA, United States
Top Space & Defense Startups in San Francisco
This list has 47 startups and was last updated on Oct 15, 2026. 20 of them are hiring right now. Largest teams: Astranis, Momentus, and Pyka.
47 startupsPage 1 of 2
Astranis
Hiring
What they do:
Advanced satellites for high orbits.
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HQ: San Francisco, CA, United States
What they do:
Autonomous electric airplanes
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HQ: San Francisco, CA, United States
Astro Mechanica
Hiring
What they do:
Supersonics for the new Jet Age
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HQ: San Francisco, CA, United States
What they do:
We're building satellites to create a real-time 3D map of the world.
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HQ: San Francisco, CA, United States
What they do:
Mass-produced AI strike systems and Counter-UAS
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HQ: San Francisco, CA, United States
Deepnight
Hiring
What they do:
Building The Next Generation of Night Vision Devices
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HQ: San Francisco, CA, United States
Farcast
Hiring
What they do:
We build advanced satcom user terminals
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HQ: San Francisco, CA, United States
Vendra
Hiring
What they do:
Custom Parts, Manufactured in America 🇺🇸
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HQ: San Francisco, CA, United States
Godela
Hiring
What they do:
AI Physics Engine to replace simulations and prototypes
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HQ: San Francisco, CA, United States
GroundControl
Hiring
What they do:
Vertical AI for highly-regulated manufacturing
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HQ: San Francisco, CA, United States
Navier AI
Hiring
What they do:
Agent-Driven Engineering
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HQ: San Francisco, CA, United States
Theseus
Hiring
What they do:
GPS Denied Navigation for Drones
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HQ: San Francisco, CA, United States
Apolink
Hiring
What they do:
24/7 satellite connectivity in low Earth orbit
Quick facts:
HQ: San Francisco, CA, United States
Cascade Space
Hiring
What they do:
Commercial alternative to the Deep Space Network
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HQ: San Francisco, CA, United States
What they do:
Constellations as a Service
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HQ: San Francisco, CA, United States
Edgerun
Hiring
What they do:
Military exoskeletons
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HQ: San Francisco, CA, United States
Orca Aerospace
Hiring
What they do:
AI spacecraft operators that lives onboard the vehicle
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HQ: San Francisco, CA, United States
General Astronautics
Hiring
What they do:
Superintelligent space Robots
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HQ: San Francisco, CA, United States
Dispatch
Hiring
What they do:
Satellites for Manufacturing in Space
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HQ: San Francisco, CA, United States
Nine Fives
Hiring
What they do:
RF test equipment for next-gen spacecraft, drones, and cellphones
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HQ: San Francisco, CA, United States
What they do:
Autonomous construction on Earth and beyond
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HQ: San Francisco, CA, United States
Vernius Systems, Inc.
Hiring
What they do:
Mass-deployable radars for air defense
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HQ: San Francisco, CA, United States
Enhanced Radar
Hiring
What they do:
AI for air traffic control
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HQ: San Francisco, CA, United States
IMPACT Drones
Hiring
What they do:
Air Defense as a Service for Civilian Infrastructure.
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HQ: San Francisco, CA, United States
What they do:
Drone swarm defence at a small-unit level
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HQ: San Francisco, CA, United States
Consus
Hiring
What they do:
The fastest and cheapest way to use AI with ITAR or CUI data.
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HQ: San Francisco, CA, United States
What they do:
Autonomous street sweeping as a service by retro-fitting vehicles
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HQ: San Francisco, CA, United States
What they do:
Search and automation for engineer-to-order companies
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HQ: San Francisco, CA, United States
What they do:
Unified flight software and hardware for the mission of tomorrow
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HQ: San Francisco, CA, United States
What they do:
The GD&T Analysis Platform for Engineering Drawings
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HQ: San Francisco, CA, United States
What they do:
A new kind of camera that can see through walls.
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HQ: San Francisco, CA, United States
What they do:
Building a nervous system for the atmosphere
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HQ: San Francisco, CA, United States
What they do:
Building drone swarms that hunt hidden enemies.
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HQ: San Francisco, CA, United States
What they do:
The new American reinsurance company.
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HQ: San Francisco, CA, United States
What they do:
Building a neutral, sovereign alternative to Starlink
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HQ: San Francisco, CA, United States
Questions and answers
How many startups are on this list?
There are 47 startups on this list, last updated on Oct 15, 2026.
Which of them are hiring?
20 of them are hiring right now, including Astranis, Astro Mechanica, and Deepnight.
Which of them have the largest teams?
By team size: Astranis (500 employees), Momentus (125 employees), and Pyka (75 employees).