I am Martijn van Exel, and I've been part of the OSM project since 2007 in one form or another. I contribute to OpenStreetMap as mvexel. I was a member of the OpenStreetMap US  Board of Directors from 2011 until early 2017, and again since early 2020 until 2022. I was a member of the OpenStreetMap Foundation Board of Directors from 2016 until early 2019. I was / am program co-chair for and involved in organizing the 2009 International and 2012-2022 US State Of The Map conferences. I am the author / maintainer of a few OSM related software projects, most notably MapRoulette.
I love OpenStreetMap and firmly believe that we are changing the world together. I believe that fundamentally, OpenStreetMap is about building the best map of the world by giving people the power to share their knowledge of the world around them with everybody else.
I live in Salt Lake City, Utah, United States. Before that, I lived in The Netherlands. I helped start the local community in both places. I enjoy connecting with mappers in person.
I write on my OSM diary very infrequently. I also have a personal blog where I write about OSM sometimes. Some posts from there:
- Using GeoServer and QGIS to Add a Custom Tile Layer to JOSM (2022)
- Experiments with PyOsmium Part 1, Part 2 (2022)
- Create Your Own MapRoulette Challenge: Updating Deprecated Tagging (2020)
- Updates to Meet Your Mappers (2018)
- Right to upload maps (about loading OSM data onto a Garmin device, 2018)
- OpenStreetMap Then and Now (2017)
I worked for Telenav on OSM things between 2012 and 2019, then for TomTom in 2019 and 2020, and for HERE Technologies in 2021. Currently, I run my own consulting firm advising companies about OSM and Open Source Geospatial topics.
If you want to get in touch, please drop me a line at email@example.com. I look forward to hearing from you!