Series A · Aerospace & Defense · Sofia, Bulgaria · Founded 2015 · 100–200 employees
EnduroSat is a Bulgarian aerospace manufacturer that designs, builds, and operates CubeSats and nanosatellites for commercial and scientific missions. Founded in 2015, the company has grown from 5 employees to over 100 people and has developed software-defined nanosatellites capable of carrying multiple sensors at a fraction of industry cost. In 2025, EnduroSat raised €43 million led by Peter Thiel's Founders Fund to scale production of its new Gen3 ESPA-class satellites and build a new facility in Sofia capable of producing up to 60 satellites monthly. The company provides end-to-end space services including payload integration, testing, launch brokerage, and operations, making space more accessible for entrepreneurs and scientists worldwide.