• 2021 John Mertens on Adopting Elixir at Change.org | Elixir Wizards podcast
• 2019 Going with the Flow with John Mertens | Elixir Mix podcast
• 2019 Lessons From Our First Trillion Messages with Flow (bonus Broadway content) | ElixirConfEU Prague
• 2019 Lessons From Our First Trillion Messages with Flow | EMPEX LA
• 2011 Mapping Public Art in Philadelphia | Code for America Summit