We plan to bring eChai across 100 cities in India. The next eChai Startup Demo Day is on 29 August in Bengaluru and Pune. The next after that is on 26 September, all in person, with 12 cities confirmed and 523 founders registered. See your city

Defense & hard tech startups in Los Angeles

The defense and hardware wave out of El Segundo: Anduril, Castelion, CX2, Radiant, Hadrian and Divergent, building physical things at scale.

14 companies building in Defense & hard tech here.

Karman Space & Defense Manufacturing

Tony Koblinski (CEO)

Huntington Beach-HQ'd fabricator of mission-critical space & defense systems (payload fairings, propulsion, missile/hypersonic and UAS structures). IPO'd on NYSE (ticker KRMN) Feb 2025 at a ~$4B valuation, r...

Apex Spacetech

Ian Cinnamon & Maximilian Benassi

LA-HQ'd productized satellite-bus maker; first Aries spacecraft (SN1) has been on orbit 1+ year and won a $46M Space Force contract. Raised a $200M Series C (Apr 2025, Point72/8VC) and a $200M Series D (Sep ...

Divergent Technologies Manufacturing

Kevin Czinger

Founded 2014, Torrance (plus Long Beach); its DAPS end-to-end digital manufacturing platform designs, 3D-prints and auto-assembles complex structures without fixed tooling. Expanded into defense (Lockheed, R...

K2 Space Spacetech

Karan Kunjur & Neel Kunjur

Ex-SpaceX team building high-power, low-cost 'mega' satellite buses (Mega-class) for MEO/GEO. Opened a 180,000 sq ft Torrance factory and flew its first in-space demo in Feb 2025. Raised a $110M Series B (Fe...

Relativity Space Spacetech

Tim Ellis (fdr), Eric Schmidt (CEO/Chair)

Founded 2015; 3D-prints rockets via its Stargate printers in a 1M+ sq ft Long Beach factory. Ex-Google CEO Eric Schmidt took a controlling stake and became CEO/Chairman in March 2025, refocusing on the fully...

Castelion Deeptech

Bryon Hargis & team (ex-SpaceX)

Founded late 2022 by ex-SpaceX engineers; mass-manufactures low-cost hypersonic weapons (the Blackbeard missile) using SpaceX-style vertical integration. Ran 20+ development flight tests in 2025. Closed a $3...

Hadrian Manufacturing

Chris Power

Founded 2020; builds AI-powered, tooling-free automated factories ('Factories-as-a-Service') for precision aerospace and defense parts. Raised a $260M Series C in July 2025 (Founders Fund/Lux, Morgan Stanley...

Radiant Deeptech

Doug Bernauer

Founded 2020, El Segundo (founder is ex-SpaceX); building the Kaleidos 1 MW portable/failsafe nuclear microreactor for remote and defense sites. Signed a USAF base supply agreement; first reactor (KDU) targe...

Freeform Manufacturing

Erik Palmer & T.J. Ronacher

LA-based, founded by ex-SpaceX engineers; AI-native autonomous metal 3D printing. Its GoldenEye (18-laser) system is evolving into the hundreds-of-lasers Skyfall platform (on-site H200 GPU clusters for real-...

Neros Deeptech

Soren Monroe-Anderson & Olaf Hichwa

Founded 2023 by former pro drone racers; American-made FPV strike drones (the Archer / Archer Strike). Selected for the US Army PBAS program plus USMC contracts. Opened a 15,500 sq ft El Segundo facility; sc...

Senra Systems Manufacturing

Jordan Black & Benjamin Shanahan

Founded 2023 by ex-SpaceX engineers; onshores wire-harness manufacturing (the hand-made cable bundles behind satellites, drones and missiles) via proprietary design software + assembly-as-a-service. Raised a...

Ares Industries Deeptech

Alex Tseng & Devan Plantamura

Founded 2024, El Segundo (YC S24 — one of YC's first missile bets); builds low-cost, compact anti-ship cruise missiles ~10x smaller and cheaper than legacy systems, using commercial parts and vertical integr...

Critical Loop climate

LA-based (founded 2023) energy startup by ex-SpaceX flight-safety engineer Bala Ramamurthy (Indian-origin), building modular microgrids + battery storage + software to cut grid-interconnection delays from ye...

Nano DC HVAC climate

City-of-LA-based cleantech startup (LACI Cohort 10, Spring 2025) building a fully integrated DC-native HVAC system that connects directly to solar and battery storage for building electrification. Early-stag...

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Want to help launch eChai in Los Angeles?

eChai is free, open and community-led, and LA does not have a chapter yet. If you are a founder or operator here who wants to bring the diaspora and the wider ecosystem together, email [email protected]. The natural launch partner is TiE SoCal, and the nearest live chapter meanwhile is San Francisco.

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