Doorkeeper is a platform for event organizers to build communities through events. We help organizers recruit and manage participants for their events. Doorkeeper Inc is the Japanese company that runs the Doorkeeper service.

Paul McMahon & Michael Reinsch
Founders of Doorkeeper Inc
Hi, we're Doorkeeper

Company Outline

Company Name Doorkeeper Inc
Established 21st of June, 2013
Headquarters 1st Floor, Insatsu Kojo
2-11-3, Meguro, Meguro-ku
Tokyo 153-0063
Representative Director Paul McMahon

Our Vision

The communities that form through events support people both personally and professionally. We want to make it easier for event organizers to grow these communities, and encourage participants to get further involved in them.


July 2010 First public release of Doorkeeper
June 2013 Doorkeeper Inc established

Dd24adb5a3a430fed83a33ed552fe1b5?s=80 Paul McMahon
Co-Founder & Representative Director

I am originally from Vancouver, Canada. Since 2006, I have been living in Tokyo, where I'm a prolific event participant, an organizer of my own event, Tokyo Rubyist Meetup, and staff at events of many others.

C7915a424cbb28fdd6c1cce270be6b58?s=80 Michael Reinsch

I'm from Germany originally, and came to Japan in 2004. Being involved in communities has always been important to me, which lead me to become an organizer at Startup Weekend Japan, and help with many other events.