Founders Fund leads $49M Series B in EnduroSat, the 'Dell for satellites' built in Bulgaria

Summary

Founders Fund is leading a $49 million Series B in EnduroSat, a Bulgarian satellite manufacturer that Founders Fund partner Delian Asparouhov describes as the "Dell for satellites." The round backs a company that has been profitable and growing 2–3x annually while operating at 75–90% gross margins — figures that are essentially unheard of in aerospace.

The supply chain bet

The core thesis is that the satellite industry is still running on the same specialized aerospace supply chain it used in 1972, while consumer electronics have compounded in performance and cost efficiency for decades. EnduroSat founder Raicho Ihaliyski built the company with no venture funding for years, which forced a different approach: adopt consumer electronics, medical device, and automotive supply chains, then stitch them together with firmware and materials engineering to produce space-grade hardware. The result is components and satellites priced at roughly 10x cheaper than traditional aerospace equivalents.

Manufacturing speed

The manufacturing advantage is stark. A typical 300-kilogram satellite takes three or four technicians around 90 days to assemble. EnduroSat's latest Gen 3 platform takes one engineer six hours. By the end of 2025, the company expects to produce 60 ESPA-class satellites per month — satellites in the 200–500 kg range — which would make it the largest satellite manufacturer in the world outside of Starlink. That is a current production target, not a projected one.

The customer model

EnduroSat has over 300 customers, avoiding the revenue concentration risk common at this stage. The company's pitch to those customers is that 90% of so-called space companies are actually data businesses, yet most try to build proprietary satellites in-house. Ihaliyski frames this as Uber deciding to manufacture cars, or Airbnb buying hotels. EnduroSat's platform is software-defined and modular — doubling battery storage, for instance, requires plugging in an extra module and turning a knob, with the satellite's software automatically recalculating weight and thermal profiles. Customers never need their own mission control.

Pricing trajectory

The company's stated goal is to drive the cost of orbital data to $1 per gigabyte across any sensor type. High-resolution radar imagery currently costs $2,000–$5,000 per gigabyte. EnduroSat's Gen 3 platform already delivers pricing below $200 per gigabyte, and Ihaliyski says reaching the $1 target is a matter of 12–18 months of further iteration.

Talent pipeline

Faced with a finite pool of Bulgarian aerospace engineers repatriated from Airbus, Boeing, and U.S. companies, Ihaliyski took over the junior and senior year curriculum at Sofia's local university, reorienting the aerospace engineering program around how EnduroSat builds satellites. Of the company's roughly 300 employees, 80 graduated from this program. The workforce skews toward engineers in their mid-twenties working long hours, with Asparouhov arguing that Bulgaria's economic history produces a different labor culture than what has developed in American tech.

Industry positioning

Asparouhov draws on Ben Thompson's framework of early markets requiring vertical integration — SpaceX had to build rockets, engines, satellites, and customer hardware from scratch — while maturing markets produce horizontal specialists. EnduroSat is making a bet on being that horizontal layer for satellite buses and components. Asparouhov's own company, Varda Space Industries, which focuses on re-entry capsules and in-orbit drug manufacturing, is a potential future customer now that EnduroSat's Gen 3 satellites are reaching the size class Varda needs.

EnduroSat is expanding manufacturing operations in Denver alongside its Bulgarian base, with Ihaliyski flagging a potential hands-on demonstration for investors by end of 2025 or early 2026.