I co-founded makandra. We design, build and host ambitious web applications. We also make Rails LTS.

I currently focus on training junior developers and iterating on our tech stack.

Open Source

I created and maintained a large number of open-source libraries over the years. Here are some I'm still happy with:

  • Unpoly: Unobtrusive JavaScript framework for multi-page apps
  • capybara-lockstep: Synchronize Capybara commands with async browser work
  • minidusen: Low-tech search solution for ActiveRecord with MySQL or PostgreSQL
  • modularity: Traits and partial classes for Ruby


I like to give talks and trainings and user groups, companies and universities. Here is a small selection I still find relevant: