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§ Private Profile · Sofia, Grad Sofiya, Bulgaria
Satellite company designing, manufacturing, and operating software-defined nanosatellites and CubeSats for space data services and orbital access.
Based in Sofia, Bulgaria, EnduroSat designs, manufactures, and operates software-defined nanosatellites and CubeSats that can be reprogrammed for multiple orbital missions without requiring hardware modifications. The company provides end-to-end space mission services, including a shared satellite platform that allows multiple commercial, scientific, and government customers to lease payload capacity on a single spacecraft. Operating from a 3,200 square meter space facility with dedicated laboratories, the organization employs over 110 personnel and experienced three times year-over-year growth in 2022 after securing venture debt funding from the European Investment Bank. The firm deployed its first satellite in 2018 during a cargo resupply mission to the International Space Station utilizing launch vehicles from Antares and OrbitalATK, and subsequently launched its Spartan shared platform and a digital ground station network. EnduroSat was founded in 2015 by Raycho Raychev.
EnduroSat has raised $273.7M across 5 funding rounds.
EnduroSat has raised $273.7M in total across 5 funding rounds.
EnduroSat has raised $273.7M across 5 funding rounds. Most recently, it raised $104.0M Other Equity in October 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Oct 31, 2025 | $104M Venture Round | — | Mati Staniszewski, Paul Graham, Marko Virkebau, Mark Pincus, Rich Miner, Steve Blank, Taavi Madiberk, EIC Fund, Roni Hiranand, Brandon Reeves, Stephen Marcus, Shrug Capital | Announced |
| Oct 1, 2025 | $100M Series U | — | Founders Fund, Roni Hiranand, GV, LUX Capital | Announced |
| May 1, 2025 | $49M Series B | Founders Fund | Andreessen Horowitz, Bora&sons, Gaingels, Great Oaks Venture Capital, Hitachi Ventures, Humba Ventures, Softbank Group, Streamlined Ventures, SV Angel, Trajectory Ventures, UpHonest Capital, Walden Catalyst Ventures, Y Combinator, Adrian Aoun, Jeff Bezos, Paul Graham, Richard Branson, SAM Altman, Ceecat Capital, Morphosis Capital | Announced |
| Mar 25, 2024 | $10.8M Debt Financing | European Investment Bank | — | Announced |
| May 11, 2023 | $9.8M Series A | Anthony Stalker | Freigeist | Announced |
EnduroSat is a Bulgarian satellite manufacturer and space service provider that engineers, builds, and operates software-defined NanoSats and SmallSats, making space data universally accessible at reduced costs.[2][5] The company builds platforms like 1U to 16U CubeSats, DeskSats, and advanced modules (e.g., X-Band radios, S-Band transceivers) for Earth observation, remote sensing, communications, and more, serving over 400 clients including NASA, ESA, universities, SMEs, and commercial firms.[2][3][5] It solves high costs and complexity in satellite supply chains by offering fixed-cost, turnkey services—including shared satellite rides, constellation operations, data downlink, and a marketplace for commercializing space data—while downlinking 200 TB and orbiting 3000+ modules.[1][2][3][6] Growth is rapid: from 1st satellite in 2018 to 200+ customers by 2023, with a 110+ team, 17,500 m² facility, and backing from investors like GV and Riot Ventures.[3][5][7]
EnduroSat was founded in 2015 in Bulgaria as the country's only satellite company with a strategic focus on innovative space technologies, electronics, communications, and software.[4][7] Key founders and early leaders innovated NanoSat systems, launching the first CubeSat online store in 2017 and achieving the first NanoSat in space by 2018.[5][7] Pivotal moments include winning major contracts in 2019, developing 2nd-gen tech and signing the 100th customer in 2021, launching fixed-cost Space Service in 2022, and first exploration missions in 2023 amid 3x year-over-year growth to 110+ team members.[5][7] Early EU Horizon 2020 funding via InnoSpaceComm project accelerated advanced comms modules and ground services, earning a Seal of Excellence and positioning for exponential expansion.[4]
EnduroSat stands out in the satellite industry through these key strengths:
EnduroSat rides the democratization of space data trend, shifting from exclusive government/major-player access to affordable services for SMEs, entrepreneurs, and non-space industries amid LEO constellation booms.[1][2][6] Timing aligns with falling launch costs and rising demand for EO/imaging data in climate monitoring, agriculture, and defense, where EnduroSat's piggyback model and marketplace boost transactions between space/non-space entities.[1][6] Market forces like commercialization (e.g., SpaceX influence) and EU innovation funding favor its agile, in-house model over traditional vendors.[4][7] It influences the ecosystem by streamlining infrastructure, enabling new entrants, and fostering sustainable constellations—positioning Bulgaria as a space hub.[1][3][4]
EnduroSat is primed to scale its Gen3 satellites and universal data marketplace, targeting constellation dominance with exploration missions and broader sensor integration.[3][5] Trends like AI-driven data analytics and mega-constellations will amplify demand for its low-cost, upgradable platforms, potentially expanding to 500kg+ classes for diverse missions.[2][3] Influence may evolve toward global space data leader, empowering non-traditional users and partnerships (e.g., Africa via Kenya deals), sustaining hypergrowth if execution matches its flight heritage.[5][7] This builds on its core mission: transforming satellites from hardware hurdles to accessible data streams.[2][5]
EnduroSat has raised $273.7M in total across 5 funding rounds.
EnduroSat's investors include Mati Staniszewski, Paul Graham, Marko Virkebau, Mark Pincus, Rich Miner, Steve Blank, Taavi Madiberk, EIC Fund, Roni Hiranand, Brandon Reeves, Stephen Marcus, Shrug Capital.