Petr Chalupa
Petr Chalupa started to develop in Ruby 8 years ago and has become quite a Ruby enthusiast. He has authored or co-authored gems like: Algebrick, Htmless, Dynflow. He contributed to: Staypuft, Katello, Foreman. Most recently he joined concurrent-ruby team contributing his actor implementation, since concurrency puzzles and abstractions turned into his latest obsession. He is proudly wearing Red Hat.