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Constantin Schreiber

Founder

Founder at Fastgen · Founder at Blair

Berlin, Berlin, Germany

FoundedBlair · YCFastgen · YC

Find your path to Constantin

1,997 people in our graph share verified history with Constantin — schools, employers, funds. One of them is your warm intro.

Arhaan A.unlockedConstantin: together at Y Combinator (2022)
×2Constantin: together at EBS Universität für Wirtschaft und Recht
×8Constantin: together at Y Combinator
Constantin: together at EBSpreneurship Forum

About

Constantin Schreiber left college to co-found Blair, a Y Combinator-backed income-based financing platform for U.S. students that raised over $100M. He previously worked on autonomous drone projects and has experience with engineering and software systems.

Founder at FastgenYC W23

Intro paths

YC

Constantin went through Y Combinator (Winter 2023) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Gustaf Alstromer — the partner who ran Fastgen's batch and knows the company first-hand. YC profile ↗

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In turn, Constantin can intro founders to Fastgen's investors below.

Fastgen's investors · 4

468 CapitalBerlinRainfall VenturesSan Francisco · $100K – $1M checksRebel FundSan Francisco · $100K – $5M checksY CombinatorSan Francisco · $500K checks · since 2023

Co-founders at Fastgen

MMMike Mahlkow
Mike MahlkowFounder
DNDavid Nordhausen
David NordhausenFounder

Founder at BlairYC S19

Intro paths

YC

Constantin went through Y Combinator (Summer 2019) — any YC alum in your network can reach them through the YC community.

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In turn, Constantin can intro founders to Blair's investors below.

Blair's investors · 9

BONDSan Francisco · since 2026General CatalystSan Francisco · $30M checks · since 2026Index VenturesSan Francisco · $540K – $10.8M checks · since 2026Lightspeed Venture PartnersMenlo Park · $1.7M – $87M checks · since 2026Rainfall VenturesSan Francisco · $100K – $1M checksStepstone GroupCharlotte · since 2026Vibe CapitalSan Francisco · $250K – $500K checksY CombinatorSan Francisco · $500K checks · since 2019ZillionizePalo Alto · $200K checks

Co-founders at Blair

MMMike Mahlkow
Mike MahlkowFounder
DNDavid Nordhausen
David NordhausenFounder

Experience

  1. Fastgen (YC W23)Co-Foundercurrent2023 — presentNew York, New York, United States
  2. Blair (YC S19)Co-Founder2019 — 2023San Francisco, United States
  3. unicon - hosted at CODECo-Founder2017 — 2019Berlin, Germany
  4. Carl Mollenkopf GmbHInterim CIO2017 — 2018Neckarsulm, Germany
  5. foodspringBusiness Intelligence Intern2016Berlin, Germany
  6. EBSpreneurship ForumChairman2014 — 2015Oestrich-Winkel, Germany
  7. West Design Products LimitedPerformance Marketing Intern2013Folkestone, United Kingdom

Skills & more

Leadership9Management5Entrepreneurship23Strategic Partnerships14Online Marketing15Business Development11Social Networking16Web Design13Web Development10Analytics8SEO6Social Media Marketing4
+2 moreOnline AdvertisingWordPress

Languages Chinese · Englisch · German · Latin · Spanisch

From Constantin's professional profile.

Frequently asked questions

Who is Constantin Schreiber?
Constantin Schreiber left college to co-found Blair, a Y Combinator-backed income-based financing platform for U.S. students that raised over $100M. He previously worked on autonomous drone projects and has experience with engineering and software systems.
Where does Constantin Schreiber work?
Constantin Schreiber is Founder of Blair and Founder at Fastgen.
What companies did Constantin Schreiber found?
Constantin Schreiber founded Blair, Fastgen.
Where did Constantin Schreiber go to school?
Constantin Schreiber studied at Y Combinator (W23 Batch); Y Combinator (S19 Batch); CODE University of Applied Sciences (B.A., Software Engineering).

Founder mafias

Same school

Shared employers