Fastgen was founded by Mike Mahlkow, David Nordhausen, Constantin Schreiber in 2023.

Who are Fastgen's investors?

Fastgen's investors include Y Combinator, 468 Capital, Rainfall Ventures, Rebel Fund.

How much funding has Fastgen raised?

Fastgen has disclosed $1.7M raised across 1 round.

Where is Fastgen headquartered?

Fastgen is headquartered in New York City, US.

Fastgen

YC W23

New York City, US · Founded 2023 · 7 employees · 4 known investors

Fastgen provides a drag-and-drop platform for building custom APIs and data workflows, with an integrated PostgreSQL database that handles data operations for applications.

Also known as Hyrule Technology

Developer Tools Enterprise Software Healthtech B2B API No-codeUnited States of AmericaGermanyAmerica / CanadaEuropePartly Remote

Founders & leadership· Y Combinator alumni (W23)

Fastgen was founded in 2023 by Mike Mahlkow, David Nordhausen, and Constantin Schreiber.

Mike Mahlkow inCo-Founder & CEO2023–2025Mike Mahlkow was CEO at Blair, an income-based student financing company that raised over $100 million, and previously worked at Stripe and Uber. He is now co-founder and CEO of Fastgen.

David Nordhausen inCo-Founder2023–2025David Nordhausen is co-founder of Fastgen (W23) and previously founded Blair (S19).

Constantin Schreiber in 𝕏Co-FounderConstantin Schreiber dropped out of college to co-found Blair (YC S19), an income-based financing platform for US students that raised over $100 million, where he led engineering for software processing millions of dollars in weekly transactions. He has prior experience in autonomous systems and cryptography.

N.C. Joseph LaiNamed on SEC filing

Michael Chi Kin ChengNamed on SEC filing

Albert Wing-Kin TamNamed on SEC filing

Paul J. TauberNamed on SEC filing

Anselm N. LeungNamed on SEC filing

Investors · 4

Y CombinatorSan Francisco · $500K

468 CapitalreportedBerlin

Rainfall Venturesreported · 2 sourcesSan Francisco · $100K – $1M

Rebel FundreportedSan Francisco · $100K – $5M

Reported raises · per SEC filings

Form D private placements

$1.7M disclosed across 1 round · 2007

▶$1.7MraisedMar 2012 · 9 investors · Other Health Care

Rule 506(b)

Officers, directors & promoters on the filing

N.C. Joseph LaiDirector
Michael Chi Kin ChengExecutive Officer, Director
Albert Wing-Kin TamExecutive Officer, Director
Paul J. TauberExecutive Officer
Anselm N. LeungDirector

Offering amount: $2M
Amount sold: $1.7M
Proceeds to insiders: $519.5K
First sale: Jan 2007
Incorporated: Corporation, California
Federal exemptions: 06

Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Founder mafia

4 people who came through Fastgen went on to found or lead other companies.

Mike MahlkowFounderFounded Blair David NordhausenFounderFounded Blair Constantin SchreiberFounderFounded Blair Lukas VollmerHead of ProductFounded Uplane

In the news

Uplane Raises $4.5M Seed for AI Ad Automation - TAMradar Funding Rounds Signalstamradar.com · Apr 2026

Lumos to acquire YC-backed Fastgen's Technology, Marking a Transformation in Identity Securityfinance.yahoo.com · Dec 2024

Fastgen - Low-Code API and workflow builderycombinator.com · Mar 2023

Frequently asked questions

What does Fastgen do?: Fastgen provides a drag-and-drop platform for building custom APIs and data workflows, with an integrated PostgreSQL database that handles data operations for applications.
Who founded Fastgen?: Fastgen was founded by Mike Mahlkow, David Nordhausen, Constantin Schreiber in 2023.
Who are Fastgen's investors?: Fastgen's investors include Y Combinator, 468 Capital, Rainfall Ventures, Rebel Fund.
How much funding has Fastgen raised?: Fastgen has disclosed $1.7M raised across 1 round.
Where is Fastgen headquartered?: Fastgen is headquartered in New York City, US.