Aerospace and defense systems startups hiring now

CesiumAstro

Austin, US · Series C

CesiumAstro provides full-stack infrastructure for agile space communications. The company designs, manufactures, and tests communication systems and satellites in U.S. facilities. Its products enable connectivity between satellites, drones, planes, cars, and other mobile devices. CesiumAstro delivers next-generation systems that connect, detect, and defend across commercial, government, and national security missions.

270 open roles0% remote

Relativity Space

Long Beach, US · YC W16

Relativity Space is an aerospace company that designs, develops, and builds 3D-printed rockets.

231 open roles6% remote

K2 Space

Torrance, US · Series C

K2 Space is developing the Giga Class satellite bus, an ultra-high-power spacecraft capable of delivering over 115kW of power and 15,000kg of payload mass to enable previously unattainable capabilities spanning ISR (Intelligence, Surveillance, and Reconna K2 Space is developing the Giga Class satellite bus, an ultra high-power spacecraft capable of delivering up to 115kW of power and 15,000kg of payload mass to enable previously unattainable capabilities spanning ISR (Intelligence, Surveillance, and K2 Space is developing a multipurpose, dual-use, wideband, software-defined phased array payload that leverages the capabilities of the K2 Space Mega Class satellite bus to perform various functions for the commercial and national defense markets.

183 open roles62% remote

Impulse Space

Redondo Beach, US · Series C

Impulse Space develops in-space transportation technology and services, including orbital transfer vehicles and rocket engines. Its vehicles move payloads across and between orbits for commercial, civil, and government missions.

153 open roles0% remote

Mach Industries

Huntington Beach, US · Series C

Mach Industries develops advanced unmanned systems and the manufacturing infrastructure to scale their production. Its product portfolio includes strike aircraft, long-range munitions, high-altitude platforms, counter-drone systems, and propulsion technologies designed for military applications.

118 open roles0% remote

Harmattan AI

Paris, FR · Series B

Harmattan AI is a defense technology company developing vertically integrated autonomous systems, including layered air-defense solutions, coordinated autonomous ISR and strike UAVs, electronic-warfare products, and C2 platforms. It designs and manufactures autonomous aerial systems such as surveillance drones and high-velocity interceptor drones capable of autonomously countering hostile unmanned threats.

117 open roles2% remote

Muon Space

Mountain View, US · Series B

Muon Space delivers critical data and enables real-time compute and decision-making in space.

117 open roles30% remote

Chaos

Los Angeles, US · Series D

CHAOS Industries is redefining modern defense with a multi-product portfolio that gives the ultimate advantage—domain dominance. The company's products are powered by Coherent Distributed Networks (CDN™), empowering warfighters, commercial air operators, and border protection teams to act faster, adapt rapidly, and stay ahead of evolving threats. Its flagship platform, HYDRA, harnesses the CDN framework to deliver software-defined multi-domain capabilities across land, sea, and air environments while integrating with existing infrastructure under constrained conditions.

112 open roles2% remote

Saronic Technologies

Austin, US · Series C

Saronic Technologies designs, manufactures, and operates AI-enabled autonomous surface vessels. It also provides Echelon, a unified command-and-control platform for planning, simulating, monitoring, and controlling autonomous fleets.

111 open roles0% remote

Maxar

westminster, US · Private Equity

Maxar provides advanced space technology solutions, including geospatial intelligence and manufacturing space systems. The company delivers high-resolution satellite imagery, digital basemaps, and 3D datasets through its Vivid and Precision3D platforms.

107 open roles34% remote

Neros Technologies

El Segundo, US · Series B

Neros is a defense technology company that builds asymmetric systems to ensure the West's strategic edge. It makes tactical, attritable, one way drones that ensure an asymmetric advantage for Western military forces.

85 open roles33% remote

Axiom Space

Houston, US · Series D

Axiom Space is the leading provider of human spaceflight services and developer of human-rated space infrastructure.

78 open roles10% remote

Divergent Technologies

Torrance, US · Series E

Divergent has created the Divergent Adaptive Production System (DAPS), an end-to-end software-hardware production system for industrial digital manufacturing. DAPS uses in-house developed AI-driven generative design software to computationally engineer structures, additive manufacturing to materialize them, and automated fixtureless assembly to create large multi-part assemblies. The company supplies the automotive, aerospace, and defense industries as a certified Tier 1 supplier.

71 open roles1% remote

Varda Space Industries

El Segundo, US · Series C

Varda processes materials in orbit and returns them to Earth.

71 open roles0% remote

Inversion

Vista, US · Series A

Inversion builds advanced reentry vehicles for next-generation defense capabilities. Its vehicles are designed to deploy to anywhere on Earth in under an hour, operating through extreme reentry conditions and landing with high precision.

68 open roles0% remote

Re:Build Manufacturing

framingham, US

Re:Build Manufacturing integrates design, engineering, and manufacturing to deliver complex, multi-technology products from concept through full-rate production. Its primary markets are aerospace and defense, energy and electrification, medical, and robotics and automation.

64 open roles10% remote

The Exploration Company

Munich, DE · Series B

The Exploration Company develops, manufactures, and operates Nyx, a modular and reusable orbital vehicle which can be refueled in orbit. Nyx serves low Earth orbit and lunar destinations, starting with carrying cargo and with the potential to fly humans afterwards.

62 open roles0% remote

Northwood Space

Los Angeles, US · Series B

Northwood builds a global network of phased array ground stations that enable real-time, reliable communication for satellite missions. Its core product is a production-ready, fully digital phased array antenna system named Portal.

60 open roles0% remote

Destinus

Valkenburg, NL

Destinus is a European defence manufacturer focused on scalable strike and air-defence systems for European and allied armed forces.

58 open roles5% remote

Isar Aerospace

Ottobrunn, DE · Series D

Isar Aerospace develops and builds launch vehicles for transporting small and medium-sized satellites and satellite constellations into Earth's orbit. The company is developing Spectrum, a two-stage, liquid-fueled rocket designed to launch 1,000 kilograms to low Earth orbit.

54 open roles0% remote

Stratolaunch

Mojave, US · Private Equity

Stratolaunch is a leading pure-play hypersonics company focused on the design, manufacture and operation of advanced aerospace systems for national security. The company enables faster, more affordable and more realistic hypersonic development through an autonomous, reusable, air-launched flight test platform and a growing portfolio of hypersonic target and mission-system offerings.

52 open roles4% remote

Reliable Robotics Corporation

Mountain View, US · Series D

The system is designed to work on any aircraft and in any airspace to enable fully automated aircraft operation.

51 open roles53% remote

Ursa Major

Berthoud, US

Ursa Major delivers flight-proven systems for hypersonics, solid rocket motors, and space mobility. The company builds high-performance systems for all domains: land, sea, air, and space.

50 open roles44% remote

Echodyne

Kirkland, US

#### Echodyne’s proprietary metamaterials electronically scanned array (MESA) is a rare technology breakthrough in radar design and manufacturing. Echodyne’s radar solutions are trusted by Defense, Government, and Commercial customers as the foundation for better situational awareness and safer outcomes. #### Echodyne proudly designs and manufactures its high-quality radars in its facilities outside Seattle, WA.

43 open roles12% remote

Fuse

San Leandro, US

Fuse delivers pulsed-power systems to accelerate the world's transition to fusion. Customers span defense, energy, and aerospace. Fuse is also developing a fusion generator able to deliver clean energy.

35 open roles0% remote

EnduroSat

Sofia, BG · Series B

EnduroSat designs, builds, and operates CubeSats and nanosatellites for commercial, governmental, and scientific missions. The company streamlines space missions in LEO and beyond, handling every step from mission design to launch and operations.

32 open roles56% remote

Overland AI

Seattle, US · Series A

Overland AI develops autonomous ground vehicle technology for tactical and operational applications. The company designs fully autonomous vehicles capable of navigating rugged terrain and GPS-denied environments.

31 open roles0% remote

Aalyria

Livermore, US · Series B

Aalyria develops network orchestration software and optical communication technologies for space and terrestrial connectivity. It offers Spacetime, a managed PaaS for developers to orchestrate networks in motion, and Tightbeam, a laser-based communication technology for high-bandwidth data transmission.

30 open roles70% remote

Forterra

Seattle, US · Series B

Forterra develops autonomous mission systems that combine mobility, communications, sensing, and computing for military operations.

29 open roles23% remote

Amca

El Segundo, US · Series B

Amca rapidly develops and manufactures critical aerospace and defense components. The company combines engineering, qualification testing, technical data development, and certified manufacturing capacity into a single integrated platform.

29 open roles0% remote