Marcus is the release manager for the Catalyst project. He's been part of the Catalyst project since it's first releases. He is also the main author of mojomojo, the wiki that powers this site.
Marcus runs a small web development company, Nordaaker, with his friend Arne. Nordaaker has developed iusethis.com and several other projects. In addition they offer commercial consulting based on the Catalyst platform, and commiercial support and development of extensions for mojomojo.