Jean Sini is a General Partner at Partech, where he joined in 2019 after spending over 20 years as a software. See portfolio, sector focus and contact routes.
Jean Sini is a General Partner at Partech, where he joined in 2019 after spending over 20 years as a software engineer and CTO at companies like Mint.com and Activeweave. He invests primarily in pre-seed and seed-stage technical founders across data, infrastructure, security AI, and developer tools, with a focus on the US and Europe. His typical check size ranges from $100K to $12M, and he participates in both seed and Series A rounds, often backing Series A companies that demonstrate clear traction. Notable portfolio companies include ProdPerfect, People.ai, Memfault, and Airdfold, the latter receiving a $4M seed investment in August 2024. Sini describes his thesis as “investing in picks and shovels for engineers,” emphasizing business-to-developer startups that provide foundational tools. He co-founded Irregular Expressions, an early-stage advisory and investment vehicle, and maintains a hands-off but supportive approach to founder guidance.
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