I like to speak at conferences all over the world. Some of those talks have been recorded. Feel free to check them out.
RailsConf 2019 - Localize your Rails application like a pro
RailsConf 2017: Tricks and treats for new developers
Nickel City Ruby 2014- Live Coding Music
RailsConf 2014 - Web Applications with Ruby (not Rails)
Rails Conf 2013 From Rails to the Web Server to the Browser
ElixirDaze 2016 - Processing 2.7 million images with Elixir (vs Ruby)
RubyConf Colombia 2015 - Escribiendo Música con Ruby