Our Speakers

Meet the industry leaders and experts who will be sharing their knowledge

Keynote Speakers

Obie Fernandez

Obie Fernandez

Shopify

Principal Engineer

Obie Fernandez is a Ruby and Rails pioneer, and best-selling author of The Rails Way. With three decades in software and a string of successful startups—including Hashrocket and Andela—he’s helped shape the Rails community from the start. Obie now leads AI and developer experience initiatives at Shopify, and still finds time to DJ and make music in Mexico City.

Vladimir (Vova) Dementyev

Vladimir (Vova) Dementyev

Evil Martians

Head of Backend

A mathematician who found his happiness in programming Ruby and Erlang, contributing to open source and being an Evil Martian. Author of AnyCable, TestProf, Action Policy and many yet unknown ukulele melodies.

Carmine Paolino

Carmine Paolino

Chat with Work

Founder and CEO

AI engineer and open source contributor, Carmine has built large-scale systems at OLX, Capgemini, and the Alan Turing Institute. He’s the creator of RubyLLM, bringing modern AI tooling to Ruby, and has co-founded startups like Freshflow, and Chat with Work. Carmine loves Ruby, deep learning, and producing electronic music in Berlin.

Marco Roth

Marco Roth

Independent

Consultant

Full-stack Ruby on Rails developer and open source enthusiast, Marco is a core contributor to Hotwire and StimulusReflex. He’s passionate about pushing the boundaries of real-time, server-rendered apps with HTML-over-the-wire, and maintains several key libraries in the Hotwire and Rails ecosystem.

Speakers

Justin Bowen

Justin Bowen

Active Agent

Founder

Justin Bowen is the creator of Active Agent, the first truly Rails-native AI framework, where Agents are Controllers. Since 2015, he’s been building real-world AI products in agriculture, healthcare, HR tech, and more, with a specialization in computer vision. His work with Active Agent combines his extensive experience in Python and Next.js, bringing it to Rails with the goal of making Ruby the language of choice for new startups in the AI age.

Jeremy Evans

Jeremy Evans

Ubicloud

Principal Engineer

Jeremy Evans is a Ruby committer who focuses on fixing bugs in Ruby. He the lead developer of Sequel, Roda, Rodauth, and many other Ruby libraries. He is the author of "Polished Ruby Programming".

Noel Rappin

Noel Rappin

Chime Financial

Staff Software Engineer

Noel is the co-author of Programming Ruby 3.3 and other technical books in the Ruby Community. He’s dedicated to making Ruby joyful and productive for developers, and is known for building community and championing better tools and practices. You can find Noel online at noelrappin.com.

Ngan Pham

Ngan Pham

Gusto

Distinguished Engineer

Ngan is a prolific open source contributor and Rubyist with a knack for scaling systems and building strong engineering teams. He’s known for mentoring developers and sharing insights on everything from Rails architecture to developer happiness. Outside of work he loves traveling with his family.

Svyatoslav (Svyat) Kryukov

Svyatoslav (Svyat) Kryukov

Evil Martians

Senior Backend Engineer

Svyat is passionate about bridging backend and frontend worlds in Ruby. He’s the creator of Skooma for strong interfaces and TurboMount for bringing modern widgets to Hotwire, and a key contributor to Inertia Rails. When he’s not coding, Svyat is a true coffee geek, always searching for the perfect pour over setup.

Fito von Zastrow

Fito von Zastrow

Cisco

Staff Software Engineer

Fito is a Staff Software Engineer @ Cisco's Network Platform. He is a SF Bay Area transplant from Asunción, Paraguay. He enjoys hiking, watching soccer, video games, and pair-programming.

Alan Ridlehoover

Alan Ridlehoover

Cisco

Senior Staff Software Engineer

Passionate Rubyist. Empathetic leader. Fallible human. Swell photographer. Rusty drummer. Loving husband & twins dad. Owner of too many hats, given I only have the one head.

Join as a Speaker

Submit your proposal by July 13, 2025 11:59 PM Pacific Time.

Submit a talk