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EnduroSat

Builds modular satellite platforms and operates a fixed-cost space data service, enabling businesses to deploy constellations and access Earth observation data without owning ground infrastructure.

Founded 201551-200 employeesSofia, Bulgaria5 open positionsWebsiteLinkedIn

Space & Satellites

Products & Solutions

Space Service
An end-to-end mission service that takes customers from payload definition to operational data delivery at a fixed cost. EnduroSat handles mission analysis, satellite integration, launch coordination, commissioning and cloud-based operations, with customers receiving data via API. The service can get a mission to orbit in approximately six months.
FRAME Satellite Platforms
A family of modular small satellite platforms designed for serial production. FRAME-24 is a 24U-class microsatellite and FRAME-15 is an ESPA-class satellite in the 200-500 kg range, both built for constellation deployments. The platforms support remote sensing payloads including hyperspectral, multispectral, SAR, thermal and broadband connectivity applications.
CubeSat Platforms
Standardised 8U and 16U CubeSat buses with flight-heritage across dozens of missions. Designed as modular building blocks, they integrate with EnduroSat's own avionics modules or third-party payloads. A DeskSat flatsat variant is available for ground testing and development before flight.
Satellite Modules
A catalogue of individual satellite avionics and structural components sold separately: onboard computers, UHF/S-band/X-band radios, power systems, solar panels and CubeSat structures. Over 3,000 modules have been deployed in orbit across customer missions, with engineering support hours included.

Videos

FRAME: ESPA-Class Satellites Designed for Serial Production

Making Space Universally Accessible

EnduroSat One - The First Bulgarian Cubesat Mission

About

EnduroSat was founded in 2015 in Sofia, Bulgaria, and has grown into one of Europe's most active satellite manufacturers, with more than 80 satellites in orbit and 400+ customers across research institutions, commercial operators and government agencies.

Offices

Sofia, BulgariaToulouse, FranceBerlin, GermanyNaples, ItalyLuxembourg, LuxembourgDenver, United States

Backed by

Founders FundRiot VenturesGV (Google Ventures)Lux CapitalEuropean Innovation Council FundShrug CapitalCEECAT CapitalMorphosis Capital

Customers & Partners

NASAESAMetaSensingAIRMOHypernova

Timeline

2026
Preparing commercial launch of FRAME-24, its largest microsatellite platform to date.
2025-10
Raised $104 million and opened the Sofia Space Center, a 188,000 sq ft facility designed to manufacture ESPA-class satellites at industrial scale.
2025-05
Raised €43 million led by Founders Fund to begin construction of a new satellite production facility in Sofia.
2022
Introduced fixed-cost Space Service, enabling end-to-end missions at a transparent price.
2018
Launched first mission to space.
2015
Founded in Sofia, Bulgaria by Raycho Raychev.

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