Polish developer coding in Ruby since 2007 (first attended Rupy conference in 2007 as a Python developer and left as a Ruby developer). Has alternated between Mac/iOS development and Ruby over the years and recently returned more to Ruby. Active builder on Bluesky/AT Protocol: author of Ruby gems Skyfall, minisky, didkit and Blue Factory, runs his own PDS (lab.martianbased.net, previously on the Amanita mushroom PDS), maintains network-wide statistics dashboards, a Linux custom feed, a liked-posts search, and the SDK.blue catalogue of AT Protocol libraries across languages. Gave the 'Building on Bluesky's AT Protocol with Ruby' talk at wroclove.rb 2026.