Jean Sini in

Jean Sini

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Founder + Managing Partner at Irregular Expressions
📍 New York, New York, United States

Jean Sini is the Founder and Managing Partner at Irregular Expressions, a venture fund investing in early-stage technical founders. A serial entrepreneur and former CTO at companies like Mint. com and Cadre, he has over two decades of experience building and scaling software companies. He holds Masters degrees from Télécom Paris and Pierre and Marie Curie University.

Outside of his professional life, Jean is described as having an adventurous spirit and is an avid kiteboarder and snowboarder. He has a long-standing passion for mentoring founders, which began in 2012, and he famously let the Canva co-founders live with him for months during their first seed round.

Unique fact: Jean was an early angel investor in the graphic design unicorn, Canva, and still serves as an advisor to the company.

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Experience
10 Years
Current Role
Founder + Managing Partner
Job Level
Leadership
Location
New York, New York, United States
Personality Overview

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Communication Style
Decision Approach
Work Preference

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Priorities

Topics Jean cares about

Early-Stage Investing
As the founder of Irregular Expressions, his focus is investing in pre-seed and seed stage companies, particularly those led by technical founders.
Infrastructure Software
His fund and personal investment thesis are centered on infrastructure, data engineering, AI, DevOps, security, and developer tooling.
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Career

Work history

4-2018
Founder + Managing Partner
Irregular Expressions
Investor + Advisor
Canva
6-2016
Investor + Advisor
People.ai
3-2015
Investor
Antheia, Inc.
6-2025
Venture Partner
Partech
In the press

Media appearances

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Education
1993 - 1996
MS
Télécom Paris
1995 - 1996
DEA
Pierre and Marie Curie University
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

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