Sébastien Sikorski
Angel Investor
Paris, France
Sébastien Sikorski is an entrepreneur who has built multiple large-scale applications, garnering millions of users.Sébastien was the founding employee of the leading French dating application AdopteUnMec and successfully led the revamp of the RATP app, the public transportation application for Paris and its regions. He has been accepted into theprestigious Y Combinator accelerator twice. Additionally, he teaches at Sciences Po Paris.At Ingenuity, Sébastien is now helping startups and corporates reach their best potential.
- Total investments:
- 4
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Sébastien Sikorski invests in
Stages Sébastien Sikorski invests in
Countries Sébastien Sikorski invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $549k–$2.3M
Investment Focus
Industry
- SaaS 2 (50%)
- Apps 1 (25%)
- Banking 1 (25%)
- FinTech 1 (25%)
- Finance 1 (25%)
Stage
- Seed 3 (75%)
- Angel 1 (25%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Payment solutions for mobility | $1.8M / Seed / Jan 14, 2021 | ||
| Nfinite develops a cutting-edge CGI platform that leverages AI and 3D technology to help brands and retailers enhance their sales with limitless product visual experiences. Our new offering includes comprehensive AI training and fine-tuning services, utilizing high-quality synthetic data to tailor AI models for specific industry needs. Thisensures superior performance, reduced deployment times, and improved rendering efficiency, making us the ideal partner for AI-driven initiatives across various industries.The company was founded in 2017 and is based in the US and in France. | $1.3M / Angel / Jul 17, 2017 | ||
| Onoff Telecom offers a variety of products for private and business customers that seek to revolutionize communications. | $2.3M / Seed / Jun 10, 2015 | ||
| 5M Ventures is a unique Start-Up accelerator that has a complete ecosystem that meets all the needs of entrepreneurs: Fundraising, Consulting, Media For Equity, Purchase of Space and an Investment Fund dedicated to Products Consumer Goods.The founders and shareholders of 5M Ventures, investors in over 250 Start-Up companies, are convinced thatbusiness creators need tailor-made support to succeed in the world of Venture Capital.5M Venture is an innovative model for capital risk investment, offering B2C companies experiencing rapid growth the possibility to advertise in top quality media space in exchange for shares in the said companies. | $549K / Seed / Jul 17, 2014 |
Co-Investors
Aster
1 deal together
Puzzle Media
1 deal together
WaterStart Capital
1 deal together
XLR Capital
1 deal together
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FAQ
What does Sébastien Sikorski invest in?
Sébastien Sikorski invests primarily in SaaS, Apps and Banking startups, most often at Seed and Angel stage. Most of the 4 investments tracked by Shizune back companies in France. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Sébastien Sikorski's check size?
Sébastien Sikorski typically joins rounds of $549k–$2.3M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Sébastien Sikorski participates in.
How do I contact Sébastien Sikorski?
Public channels for Sébastien Sikorski include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Sébastien Sikorski last invest?
The most recent investment recorded for Sébastien Sikorski closed in Jan 2021. Shizune tracks 4 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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