Space & Satellites defence companies in Spain

Deep-tech company building sensors, space systems, robotics, and quantum technology for defence and aerospace applications.

Q-SLAM-40

A man-portable loitering munition with 25 km range and 25-minute endurance, carrying a 1.2 kg warhead, deployable from backpacks by a two-person team in under 5 minutes with GPS-denied operation capability.

Q-SLAM-100

A medium-range loitering munition with 120-minute endurance and 60-70 km range, equipped with the DeepArq AI platform for collaborative flight, autonomous target identification, and real-time threat classification.

Techfire

A fire control system for mortars and artillery howitzers that automates direct and indirect fire operations, currently in service with multiple NATO armed forces and armies in the Asia-Pacific region.

Castellón-based space propulsion startup developing green monopropellant thrusters for satellites based on hydrogen peroxide fuel. Secured €14.5M from the European Innovation Council Accelerator to scale its 5N thruster product line.

Builds and operates a constellation of nanosatellites that deliver satellite IoT connectivity to remote assets in industries including energy, agriculture, logistics and defence.

FOSSASat

FOSSA's 3U nanosatellite platform designed for low Earth orbit missions. Each satellite generates over 30W of power, carries a software-defined radio for communications, and supports multiple payload types including LoRa IoT, RF sensing (SIGINT/ELINT) and earth observation. The modular design allows missions to be tailored for connectivity, situational awareness or imaging applications.

FOSSA Nexus

A ruggedised IoT device and gateway that connects remote assets to FOSSA's satellite network or to cellular networks (GSM, NB-IoT). It supports a wide range of external sensors for monitoring parameters such as temperature, pressure, humidity and voltage, runs on batteries or solar power, and is built for outdoor and industrial deployments in areas without conventional network coverage.

Ground Station

A turnkey ground station for LEO satellite operations, starting at €200,000. The system includes UHF Yagi and S-band parabolic antennas, software-defined radio hardware, and a remote operations capability so the station can be controlled from any mission operations centre. It supports autonomous satellite tracking and is designed for operators running small satellite constellations.

SatIoT

FOSSA's satellite IoT connectivity service, currently in a selective beta programme. It links devices equipped with a FOSSA Nexus gateway or direct LoRa connection to the satellite constellation, routes data through ground stations, and delivers it to customers via API. The service targets businesses with assets in unconnected areas and IoT platform providers who need a satellite backhaul layer.

Builds air-breathing electric propulsion systems that allow satellites to operate continuously in Very Low Earth Orbit at around 200 km altitude, using atmospheric air and solar power in place of onboard fuel.

Builds very high-resolution optical imagers for Earth observation satellites. The iSIM instrument has flown on ISS missions and CubeSats launched on SpaceX Falcon 9, serving defence intelligence and methane monitoring customers.

Small satellite manufacturer offering end-to-end nanosatellite missions and communication subsystems. Partnered with ESA and GMV on the Celeste IOD-1 in-orbit demonstrator launched in 2026.

Santander-based RF specialist building solid-state power amplifiers, block upconverters, and low-noise receivers for space and defence satellite communications. Certified as a PYME Innovadora and competing with US primes in European military RF.

Valencia-based photonics spinout of the NTC institute providing next-generation radar warning, signal intelligence, and countermeasures solutions for defence primes and government agencies. AQAP/PECAL 2110 NATO quality certified with deployed systems across three continents.

Precision machining and subsystem assembly firm in Sant Cugat del Vallès supplying aerospace, defence, nuclear fusion, submarine and space customers since 1951. Backed by Hyperion Fund and operates +15,000 m2 of facilities.

Spanish satellite network software specialist focused on interference management, signal monitoring, and electronic warfare tools for defence and commercial customers. Over 30 years building VSAT deployment and link budget solutions for governments and telcos worldwide.

Barcelona spinout developing multi-frequency microwave radars, radiometers, and GNSS reflectometers for airborne and space platforms. Builds the RF front-end for the 3Cat-5/A satellite's FMPL-2 payload and a ground-based SAR for surveillance through dense vegetation.

Seville-based manufacturer of star trackers and sun sensors for satellites, with 4300+ flight units delivered since 2009 serving space and defence navigation programs.