Stefan is known on the Internet as Costenslayer and has used this name for many years and as a result its origins are now lost.
Stefan works with the Community Web Services (MCWS) Team Cureantly manging the services offered to the community
Access Groupsnda, mcws team, slack-access
Tagsblogger, bitcoin, mozfamily, mentor, mozfest, webmaker, sf-monument, mozilla guides, support, communityit, buddies, sumo, it, education, engagement, firefox student ambassadors, marketing, firefoxos, flame users, community management, community builders, mozfest volunteers, moco, community sites wpengine administration
Stefan has shown a great deal of initiative in figuring out new ways to bring youth into Mozilla. We need more of this.
One of the volunteer heroes of Mozilla Festival who bring their unique skills and dedication to the festival each year to make it the success it is today. Stefan is an entusiastic team player who has worked across many areas of the festival.
Luis A. Sanchez Romero
Stefan Is an extraordinary Mozillian, this year he help at Mozfest as volunteer always happy to help the sessions.
Stefan has helped with live train the trainer events and is always willing to help people find their way in IRC channels and via various lists.
I've met Stefan and he's helped run a training for Webmaker Mentors. He's a great guy and very dedicated Mozillian.
Stefan is a youth mentor at EPIK. He helps teach kids in kent how to code, ultimately building towards the goals of webmaker.