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People · Technology
Joel Stein — Co-Founder and Chief Technology Officer · Arch Investments · New York, New York, United States.
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Profile updated Nov 2026 · Sourced from public professional profiles · Legitimate-interest B2B basis
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About
Joel Stein is a co-founder of Arch. The company’s founder story describes his background as an MIT engineer and his experience scaling engineering teams as a founding engineer at early-stage businesses. His work at Arch helped develop software infrastructure for private-market investment operations, beginning with document and K-1 workflows and expanding into alternative-investment data.
Experience
CTO and CofounderCurrent
Arch · Greater New York City Area
Jan 2018 – Present
CTO and Cofounder
Cosali
Jul 2016 – Jan 2018
Education