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The Los Angeles Defense & Space Ecosystem
Where LA's defense, space and energy companies are, what they build, who funds them and who is hiringPublished · By DefDex
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Short answer
What is the Los Angeles defense tech ecosystem?
Los Angeles is a center of hardware-heavy defense, space and energy companies, concentrated in the South Bay around El Segundo, Hawthorne and Torrance, with clusters in Long Beach, the Westside and the Antelope Valley. Companies based there disclosed $4.39 billion of equity in 2025 and $7.42 billion in 2026 through October 13.
Key takeaways
- 47 of the 75 companies in this guide are in the South Bay corridor of El Segundo, Hawthorne, Torrance, Redondo Beach and Inglewood.
- Companies based in Los Angeles County disclosed $4.39 billion of equity in 2025 and $7.42 billion in 2026 through October 13, up from $1.19 billion in 2024.
- The region's startups hold 367 federal prime awards in DefDex with $956 million obligated, led by the Air Force, Navy, Army and NASA.
- On October 13, 2026, these companies listed 3,211 open roles located in the region on their public job boards.
- Radiant, Valar Atomics and Antares Nuclear, three advanced-reactor developers, are all based in the South Bay.
Los Angeles builds more of the physical side of defense and space than almost anywhere else. Within a few miles of LAX, startups build hypersonic missiles, satellite buses, reentry capsules and nuclear microreactors next to the primes that built the region's aerospace industry. This guide maps where those companies are, what they make, who funds and buys from them, and who is hiring.
Where Are the Companies?
South Bay aerospace corridor · 47 companies
The South Bay corridor (El Segundo, Hawthorne, Torrance, Redondo Beach and Inglewood) holds most of the region's companies. SpaceX's Hawthorne campus sits among a dense ring of younger companies: Castelion, Epirus, K2 Space, Impulse Space, Varda, Radiant, Valar Atomics and Hadrian. Millennium Space Systems and Raytheon's El Segundo site anchor the established side, and Marvin Engineering builds weapons carriage and release equipment in Inglewood.
Long Beach and the port · 7 companies
Long Beach is the region's launch and space-station cluster: Rocket Lab's headquarters, Relativity Space, Vast, ExLabs and Long Wall (formerly ABL Space Systems). Bluecore Energy is developing floating nuclear power for the port, and Critical Loop deploys relocatable batteries for industrial sites waiting on grid upgrades.
Westside and central Los Angeles · 13 companies
Playa Vista, Santa Monica and Marina del Rey host spacecraft and software companies: Apex's satellite-bus factory, Outpost's and Inversion's reentry vehicles, and Sift's telemetry platform. Central Los Angeles adds Silvus Technologies' mesh radios, Nominal's hardware-test software and Parallel Systems' autonomous rail vehicles, while Edison International (Southern California Edison) is headquartered in Rosemead.
Antelope Valley and the San Fernando Valley · 7 companies
North of the basin, Palmdale hosts Lockheed Martin's Skunk Works and Northrop Grumman aircraft work, and Lancaster's Fox Field is home to Hydroplane's hydrogen fuel-cell powerplants. In the San Fernando Valley, L3Harris Aerojet Rocketdyne makes rocket propulsion in Canoga Park, Machina Labs forms sheet metal robotically in Chatsworth, and TransAstra develops debris-capture technology in Sylmar.
What Do They Build?
Missiles, counter-drone and electronic warfare
A new class of weapons makers builds for volume rather than bespoke programs. Castelion's Blackbeard is a mass-producible hypersonic strike missile for the F/A-18 and Army launchers, and Ares Industries builds container-launched cruise missiles. Epirus and Stellios work on high-power microwave defense. CHAOS Industries builds distributed radar and counter-drone interceptors, and CX2, Pacific Defense, Silvus and Doodle Labs supply electronic warfare and resilient communications.
Space: buses, mobility, reentry and stations
Los Angeles covers nearly every step of a space mission. Apex and K2 Space build satellite buses at scale. Impulse Space, Argo Space, General Galactic, Morpheus Space and Phase Four provide in-space propulsion and orbital transfer. Varda, Inversion and Outpost bring cargo back from orbit, Vast is building commercial space stations, and Northwood Space builds phased-array ground stations.
Nuclear and power
Three advanced-reactor developers have grown up within a few miles of one another. Radiant builds transportable microreactors, Valar Atomics high-temperature nuclear systems, and Antares Nuclear heat-pipe microreactors for military bases and space. Arbor Energy and Lazarus Energy are developing supercritical-CO2 turbines, and Bluecore Energy floating reactors for the port.
The factories behind it
A manufacturing layer serves all of them. Hadrian runs automated precision-machining factories, Divergent prints and robotically assembles airframes and structures, and Machina Labs and Freeform automate sheet-metal forming and metal printing. Senra Systems automates wire harnesses, and Cambium makes high-temperature composites.
How Much Private Capital Is Flowing In?
Disclosed equity rounds for companies based in the region, by announcement year. Debt facilities, grants and public offerings are excluded, and a tranche already counted inside a later headline round is counted once. 2026 is year to date.
| Year | Disclosed equity | Rounds |
|---|---|---|
| 2020 | $646M | 6 |
| 2021 | $1.38B | 16 |
| 2022 | $665M | 12 |
| 2023 | $628M | 20 |
| 2024 | $1.19B | 26 |
| 2025 | $4.39B | 35 |
| 2026 | $7.42B | 29 |
Public offerings are reported separately: SpaceX’s IPO (Jun 11, 2026, $75.00B).
Largest rounds since 2025
| Company | Round | Announced | Amount | Valuation |
|---|---|---|---|---|
 | Series D | Aug 6, 2026 | $1.37B | $7.87B |
 | Series B | Aug 3, 2026 | $1.00B | $6.00B |
 | Series C | Aug 19, 2026 | $800M | $13.00B |
 | Series D | Nov 13, 2025 | $510M | $4.50B |
 | Series D | Jun 2, 2026 | $500M | $4.26B |
 | Series D | Jul 30, 2026 | $500M | $6.80B |
 | Series C | Jul 27, 2026 | $370M | — |
| Series B | Dec 5, 2025 | $350M | $2.80B |
 | Series E+ | Jul 17, 2026 | $350M | $3.37B |
| Series D | Sep 16, 2026 | $308M | $5.40B |
| Series C | Jun 2, 2025 | $300M | — |
 | Series D | Dec 17, 2025 | $300M | $1.80B |
Who Are the Government Customers?
Startups in the region hold 367 federal prime awards in DefDex, with $956M obligated. Obligations are money committed, not contract ceilings; subcontracts and classified work do not appear.
Who Is Hiring?
3,211 open roles located in the region were listed on 35 companies’ public job boards on Oct 13, 2026. Companies without a public board are not counted.
| Company | Open roles in the region |
|---|---|
 | 732 |
 | 302 |
 | 272 |
| 187 |
 | 170 |
| 163 |
 | 133 |
| 126 |
| 120 |
 | 109 |
All 75 Companies
| Company | Area | Focus |
|---|---|---|
 | Long Beach and the port | Containerized missile-defense systems and flight testing |
 | Long Beach and the port | Autonomous defense platforms, sensing, and weapons |
| South Bay aerospace corridor | Compact fission microreactors |
 | South Bay aerospace corridor | Integrated RF communication, navigation, and sensing |
| Westside and central Los Angeles | Productized satellite platforms |
 | South Bay aerospace corridor | Turbomachinery, gasification and emissions-free baseload power development |
 | South Bay aerospace corridor | Mass-manufacturable missiles |
 | South Bay aerospace corridor | Water-propelled orbital transportation |
 | Westside and central Los Angeles | Engineering analysis, testing, and design |
 | Long Beach and the port | Floating nuclear power development |
 | South Bay aerospace corridor | Advanced composites and high-temperature materials |
| South Bay aerospace corridor | Hypersonic strike weapons and propulsion |
| South Bay aerospace corridor | Radar and distributed sensing |
 | Westside and central Los Angeles | EV charging reliability, repair and operations technology |
 | Long Beach and the port | On-demand power, batteries, and grid management |
 | South Bay aerospace corridor | Electronic warfare and spectrum sensing |
| South Bay aerospace corridor | Digital design, additive manufacturing, automated assembly |
 | Westside and central Los Angeles | Mesh radios for drones and autonomous systems |
 | South Bay aerospace corridor | Aerospace electronics and structural components |
Edison International / Southern California Edison | Westside and central Los Angeles | Electric utility and grid infrastructure |
 | Antelope Valley and the San Fernando Valley | Energy-storage and power infrastructure |
 | South Bay aerospace corridor | High-power microwave counter-drone systems |
 | Westside and central Los Angeles | Seawater electrolysis for hydrogen and carbon removal |
 | South Bay aerospace corridor | Public EV fast-charging network |
 | Long Beach and the port | Orbital capture, servicing, and space-resource infrastructure |
 | South Bay aerospace corridor | Programmable drones with onboard AI computing |
 | South Bay aerospace corridor | Autonomous metal additive manufacturing |
 | South Bay aerospace corridor | Military logistics and sustainment software |
 | South Bay aerospace corridor | Space energy, propulsion, and orbital logistics |
 | South Bay aerospace corridor | Robotic surface finishing and inspection |
| South Bay aerospace corridor | Automated precision manufacturing and dedicated factories |
 | South Bay aerospace corridor | Hybrid-electric regional airliner development |
 | South Bay aerospace corridor | High-speed aircraft and propulsion development |
 | Antelope Valley and the San Fernando Valley | Hydrogen fuel-cell aircraft propulsion and mobile power |
| South Bay aerospace corridor | Orbital transfer and space transportation vehicles |
 | Westside and central Los Angeles | Spacecraft reentry and orbital cargo delivery |
| South Bay aerospace corridor | Large high-power satellite platforms |
 | Huntington Beach; Brea; Santa Ana; South El Monte | Structures, payload protection, propulsion, and mission components |
L3Harris Aerojet Rocketdyne | Antelope Valley and the San Fernando Valley | Rocket propulsion and missile components |
 | South Bay aerospace corridor | Robotic manufacturing automation and assembly systems |
 | South Bay aerospace corridor | Supercritical CO2 power turbines |
 | Antelope Valley and the San Fernando Valley | Advanced aircraft, hypersonics and spacecraft development |
 | Antelope Valley and the San Fernando Valley | AI-driven robotic sheet-metal forming |
 | South Bay aerospace corridor | Weapons carriage, release systems, test equipment and thermal / power systems |
 | South Bay aerospace corridor | Ultraspectral sensing and material-aware perception |
 | South Bay aerospace corridor | Satellites, space programs and aerospace engineering |
 | South Bay aerospace corridor | Aircraft actuation and flight-control sustainment |
 | South Bay aerospace corridor | Electric satellite propulsion systems |
 | South Bay aerospace corridor | FPV military drones and domestic drone components |
 | Antelope Valley and the San Fernando Valley | Heat-driven clean hydrogen production development |
 | Westside and central Los Angeles | Hardware testing, data analysis, and mission operations software |
 | South Bay aerospace corridor | Aircraft, space systems and survivability testing |
 | South Bay aerospace corridor | Phased-array ground communications for satellites |
 | Westside and central Los Angeles | Autonomous mining robots for terrestrial and lunar operations |
 | Westside and central Los Angeles | Reusable spacecraft and autonomous cargo return |
 | South Bay aerospace corridor | Open-architecture electronic warfare, sensing, and communications |
 | Westside and central Los Angeles | Autonomous battery-electric rail vehicles |
 | South Bay aerospace corridor | RF plasma spacecraft propulsion |
 | South Bay aerospace corridor | Open integration of sensors, command systems, and autonomous platforms |
| South Bay aerospace corridor | Transportable nuclear fission microreactors |
| Long Beach and the port | Reusable launch vehicles and advanced manufacturing |
 | South Bay aerospace corridor | Civil helicopters and unmanned aircraft initiatives |
| Long Beach and the port | Launch vehicles, spacecraft, and satellite components |
 | South Bay aerospace corridor | Surveillance radars, electronic warfare and aircraft aerostructures |
 | Westside and central Los Angeles | Electricity, gas utilities and energy infrastructure |
 | South Bay aerospace corridor | Wire harness design and automated production |
 | South Bay aerospace corridor | Telemetry data tools for complex hardware |
 | Westside and central Los Angeles | Tactical mesh radios and unmanned-system communications |
| South Bay aerospace corridor | Launch vehicles, spacecraft, and satellite systems |
 | South Bay aerospace corridor | High-power microwave systems; compact fusion and propulsion development |
 | Antelope Valley and the San Fernando Valley | Orbital debris capture and space-resource technology |
| South Bay aerospace corridor | High-temperature nuclear power systems |
| South Bay aerospace corridor | Orbital processing and hypersonic reentry systems |
| South Bay aerospace corridor | Commercial space stations and orbital infrastructure |
 | South Bay aerospace corridor | Lunar rover development and planetary mobility |
Companies come from a 122-company Southern California directory researched for LA Tech Week (October 2026). This guide covers the companies headquartered in Los Angeles County, plus Orange County and San Diego companies with a Los Angeles site, which are listed but excluded from the funding and hiring totals.
Frequently Asked Questions
Where are defense tech companies in Los Angeles?
Most Los Angeles defense, space and energy companies are in the South Bay corridor of El Segundo, Hawthorne, Torrance, Redondo Beach and Inglewood: 47 of the 75 companies in this guide. Long Beach hosts launch and space-station companies, Playa Vista and Santa Monica host spacecraft and software companies, and Palmdale and Lancaster host advanced aircraft and hydrogen aviation work.
How much venture funding goes to Los Angeles defense and space startups?
Companies based in Los Angeles County disclosed $4.39 billion of equity across 35 rounds in 2025 and $7.42 billion across 29 rounds in 2026 through October 13, compared with $1.19 billion in 2024. The largest rounds since 2025 include Hadrian's $1.37 billion Series D, Valar Atomics' $1 billion Series B and Castelion's $800 million Series C.
Which government agencies buy from Los Angeles defense startups?
The Air Force is the largest buyer by obligated dollars in DefDex's federal prime award records for Los Angeles startups, followed by the Navy, the Army and NASA, then Space Systems Command. Together the region's startups hold 367 prime awards with $956 million obligated. These figures exclude subcontracts and classified work.
Which Los Angeles defense and space companies are hiring?
On October 13, 2026, SpaceX listed the most open roles located in the region on its public job board, followed by Relativity Space, Rocket Lab, Impulse Space, Vast and Castelion. Across 35 companies with public boards, 3,211 open roles were located in the region. Companies without a public job board are not counted.
Which nuclear startups are in Los Angeles?
Three advanced-reactor developers are based in the South Bay: Radiant in El Segundo builds transportable microreactors, Valar Atomics in Hawthorne develops high-temperature nuclear power systems, and Antares Nuclear in Torrance builds heat-pipe microreactors for military bases and space. Bluecore Energy in Long Beach is developing floating nuclear power for ports.