Based in New York City and San Francisco where he invests in early stage technology startups, Jean Sini joined venture firm Partech as General Partner in 2019.

Jean is also managing director of Irregular Expressions, a collective of 75 seasoned engineering leaders backing seed stage founders.

He’s been advising and investing since 2012, in Treasure Data (sold to ARM in 2018 for $650m+), Canva(currently valued at over $3b), People.ai (backed by Lightspeed Ventures, a16z, and Iconiq), Antheia, ProdPerfect, Clubhouse, Datakin and Firefly amongst others.

A repeat founder with 20+ years of software engineering experience, Jean’s held Chief Technology Officer roles at several startups including social media platform Activeweave (sold to TwelveFold Media in 2007), fintech pioneer Mint.com (acquired by Intuit for $175m in 2010), home decor retailer One Kings Lane, on-demand expertise marketplace Fountain (acquired by Porch in October 2015), and real estate investment platform Cadre from 2016 to 2018.

Earlier, he was Director of Engineering at Motorola and Oracle.

Jean holds M.S. degrees in C.S from Telecom Paris and from the Computer Science Labs at the Paris 6 University.


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