Felix Frank has used and programmed computers for most of his life. During and after working on his computer science diploma, he gained experience on the job as a systems administrator, server operator, and open source software developer. He spent 6 years of his 11-year career as a Puppet power user. In parallel, he spent about two years intensifying his studies through ongoing source code contributions and active participation in several conferences.
Martin Alfke is co-founder and CEO of example42 GmbH. He is a Puppet and automation enthusiast since 2007. In the past, he would have said he is a "system administrator". Nowadays, he likes the term "infrastructure engineer". The big difference is that system administrators sshs into systems to fix them, whereas infrastructure engineers fix their automation.
Martin is serving as a Puppet Labs' training partner in Germany since 2011, conducting official Puppet training. In his spare time, he likes reading books and visiting interesting locations.