Jason Gray
Founder & Managing General Partner at Pioneer Fund; YC alumnus
jasongray
Toronto, Ontario, Canada
4K connections
Joined May 2024
Summary
Operator turned investor: Jason moved from leading large energy operations to early‑stage investing. He built SunEdison’s Canadian business (P&L, project development, module sales and a manufacturing facility) and now runs Pioneer Fund, focusing on supporting YC startups as a founder/manager of a YC‑alumni fund. marsdd+2
Social‑impact solar entrepreneur: As co‑founder of SunFarmer, Jason helped design and deploy solar systems and financing models for clinics and schools in Nepal and Southeast Asia, including emergency relief after the 2015 Nepal earthquakes; SunFarmer’s work emphasizes sustainable, locally‑maintained systems and long financing terms to make larger systems affordable. sunfarmer+2
Early‑stage network builder within the YC ecosystem: Jason is a YC S15 alumnus (SunFarmer) and runs Pioneer Fund, which pools YC alumni capital and expertise to invest in YC startups — positioning him as a connector between operators and founders in the YC community. ycombinator+2
Work
Education
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Notes
NPNikhil Panditsaid they've seen
JGJason Gray
lead major investment decisions that drove strong outcomes for a private equity firm.Nov 1, 2025
MPMatt Puchalskisaid that if they needed strategic guidance on a challenging investment,
JGJason Gray
would be among their top choices in private equity.Oct 31, 2025
DMDave Messinasaid they've seen
JGJason Gray
's leadership make a clear positive difference at their professional service firm.Jul 15, 2025