Jean Sini
Jean Sini is a General Partner at Irregular Expressions, which he founded. He previously served as CTO at several companies and is an angel investor in multiple startups.
What Jean can write
Career
- Activeweave · Co-founder and CTO
- Fountain · Co-founder and CTO
- Twelvefold · CTO
- Mint · VP, Engineering
- Ring · VP, Engineering
- Porch · VP, Engineering
- Partech · General Partner
- Irregular Expressions · Founding PartnerNow
Companies founded
Investments named in public bios
Focus
Also at Irregular Expressions
Partners like Jean
At firms with a similar stage, sector and check size.
Alert me when Irregular Expressions is active
One email when Jean's firm raises a fund, adds a partner or shows new activity.
Send Mode VC your deck
Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
Send your deckQuestions
Who is Jean Sini?
Jean Sini is a General Partner at Irregular Expressions, which he founded. He previously served as CTO at several companies and is an angel investor in multiple startups.
How much does Jean Sini invest?
Irregular Expressions has not reported a check size. It invests at pre-seed, seed.
How do I pitch Jean Sini?
Email [email protected], the firm's inbox for founders, and name Jean in the subject. A warm intro from a founder Irregular Expressions backed works better.
What did Jean Sini do before Irregular Expressions?
Co-founder and CTO at Activeweave; Co-founder and CTO at Fountain; CTO at Twelvefold; VP, Engineering at Mint; VP, Engineering at Ring; VP, Engineering at Porch; General Partner at Partech.
Last updated 2026-10-15. Is this you? Ask for a correction.