OpenStreetMap

martien-vdg

Mapper since: April 11, 2019

My name is Martien van de Griendt. I live in Nijmegen, The Netherlands. I am a freelance website developer.

I am a volunteer for Missing Maps. I am a member of the HOT Global Validators. As a member of the HOT Training Working Group i keep learnosm.org up to date.

My Slack display name: @martien