Piotr is a hacker scientist: an assistant professor at Warsaw University of Technology, a Ruby developer at Rebased and a founding member of Warsaw Hackerspace. When not coding (or talking about coding) he coaches at Rails Girls Warsaw, organises Warsaw Ruby Users Group and NetWtorek – monthly meetings of people from the NGO/non-profit and IT sectors, as well as SocHack – quarterly 48-hour hackatons for worthy causes, in coordination with Random Hacks of Kindness, Open Data Day and Open Education Week.