Fundraising Fox
Find your path to Sirian
Sign up to see every warm intro you have to Sirian
- Paths you didn't know you had: your email and LinkedIn already hold routes to Sirian. We find them for you
- 2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
- Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone
Days of research, done the moment you sign in, with every route ranked by how warm it is.
About
Sirian Maathuis is a designer and builder who now works on Bloom.
Founder at BloomYC X25
Intro paths
Sirian went through Y Combinator (Spring 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was David Lieb, General Partner at Y Combinator — the partner who ran Bloom's batch and knows the company first-hand. YC profile ↗
In turn, Sirian can intro founders to Bloom's investors below.
Bloom's investors · 4
Co-founders at Bloom
Founder at BloomYC W21
Intro paths
Sirian went through Y Combinator (Winter 2021) — any YC alum in your network can reach them through the YC community.
In turn, Sirian can intro founders to Bloom's investors below.
Bloom's investors · 16
Co-founders at Bloom
Frequently asked questions
- Who is Sirian Maathuis?
- Sirian Maathuis is a designer and builder who now works on Bloom.
- Where does Sirian Maathuis work?
- Sirian Maathuis is Founder of Bloom.
- What companies did Sirian Maathuis found?
- Sirian Maathuis founded Bloom, Bloom.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Delft University of Technology mafia122
Also came through, then founded or led a company.
University of Amsterdam mafia95
Also came through, then founded or led a company.
Bloom mafia7
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Bloom's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights