German Ruby framework author and conference speaker. Started programming around age 8 on a Mac, learning C++ from 'Tricks of the Mac Game Programming Gurus' and then Perl before moving to Ruby and Rails. Author of Trailblazer, Cells (2008) and Reform. Works for the German police building workflow-heavy applications, which drove Trailblazer 2.1's BPMN-inspired process modeling. Inspired by Piotr Solnica and Scott Wlaschin's Railway Oriented Programming. Panel representative of Trailblazer at the wroclove.rb 2018 Enterprise Rails Panel. At wroclove.rb 2022 presented '10 Things You Never Wanted To Know About Reform 3', announcing the Reform 3 redesign built on Trailblazer activities and discussing prior Reform retrospectives he gave in Odessa (~2017/18, 'Reform: What Went Wrong') and an earlier RusRuby/Rosslavl talk.