Co-author of The Pragmatic Programmer, Programming Elixir, Programming Ruby, The Pragmatic Starter Kit, Agile Web Development with Rails. Speaker. Trainer.
Irina Nazarova
Keynote, Panel Host
CEO at Evil Martians, co-founder at AnyCable and a true coffee geek!
José Valim
Keynote: Livebook: where Web, AI, and Concurrency meet
Creator of Elixir. Chief Adoption Officer at Dashbit. Prev. Rails core. Ruby Hero Award recipient.
Xavier Noria
Keynote: Zeitwerk: A Retrospective
Rails core. Author of Zeitwerk. Software veteran who does OSS for fun in spare time.
Koichi Sasada
Keynote: 20th years of YARV
Director of Ruby Association. Ph.D in Information Science and Technology. Improving Ruby interpreter (MRI/CRuby).
Victor Shepelev
Keynote: Seven things I know after 25 years of development
Ukrainian. Ruby committer. Software Architect at Hubstaff. Currently serving in the Armed Forces.
Carmen Huidobro
MC
Head of Developer Education at DevCraft academy.
Jean Boussier
Talk: A Decade of Rails Bug Fixes
Rails core. Ruby committer. Senior Staff Engineer at Shopify.
Maple Ong
Talk: Lessons from a Rails Infrastructure Team
Product Infrastructure Engineer at Gusto. Prev. Rails Infrastructure team at Shopify.
Yuta Saito
Talk: What you can do with Ruby on WebAssembly
Ruby, Swift and LLVM committer with focus on WebAssembly support. Ruby Prize 2022 winner.
Hitoshi Hasumi
Workshop: Embedded Ruby Revolution: A Hands-On Workshop with PicoRuby
Creator of PicoRuby and PRK_Firmware. Maintainer of IRB, Reline and mruby/c.
Cristian Planas
Talk: 2000 engineers, 2 millions lines of code: the history of a Rails monolith
Senior Staff Engineer at Zendesk
Anatoly Mikhaylov
Talk: 2000 engineers, 2 millions lines of code: the history of a Rails monolith
Senior Staff Performance Engineer at Zendesk
Magesh
Talk: Concurrency in Ruby: Threads, Fibers, and Ractors Demystified
Dev Coach - React/Rails coder. Lead Technical Consultant at RailsFactory. Opensource enthusiast.
Lucian Ghinda
Talk: The Modern Rubyist: When and How to Use the Latest Features
Workshop: Testing: How to write fewer tests and cover more cases
Product Engineer, Ruby on Rails Developer. Co-creator of ideatify. Curator of Short Ruby Newsletter.
Adrian Marin
Panel: A sustainable path in Open Source
Friendly.rb co-host and author of Avo
Dmitry Pogrebnoy
Talk: Demystifying Debugger
Senior Software Engineer at RubyMine team, JetBrains
Stephen Margheim
Workshop: SQLite on Rails: From rails new to 50k concurrent users and everything in between
OSS contributor. Head of Engineering at Test IO.
Igor Jancev
Talk: Patterns and solutions distilled from 10 years development and maintenance of a big campus software ruby on rails application
Bruno Sutic
Talk: Async Ruby
Senior full-stack developer working with web technologies for over a decade
Jakub Godawa
Talk: Visualized multi-threaded simulators in Ruby
I like Ruby and Ruby likes me. I'm a nerdy team player and I enjoy pair-programming.
Rafael Peña-Azar
Talk: How Ruby forged Crystal
Founder of Ruby Santa Marta. MSc. Web Engineering. Senior Software Developer.
Julik Tarkhanov
Talk: On the benefits of slot scheduling
Director of engineering at Cheddar Payments.
Karen Jex
Talk: Optimising your database for analytics
Ivan Nemytchenko
Talk: The Curse of Service Objects
Serial CTO of small-to-medium size startups
Guilherme Carreiro
Talk: Building native Ruby extensions in Rust
Staff Developer at Shopify
Fernando Perales
Talk: Let's give REST a rest: exploring the state of gRPC in Ruby
Prakriti Mateti
Talk: One does not simply... rebuild a product
Director of Engineering at Culture Amp
Samuel Giddins
Talk: A survey of recent RubyGems CVEs
Security Engineer in Residence at Ruby Central
Svyatoslav Kryukov
Talk: Assembling the Future: crafting the missing pieces of the Ruby on Wasm puzzle
Backend Developer at Evil Martians
Igor S. Morozov
Talk: Benefits and challenges of introducing a strict Content Security Policy
A lifelong software engineer who turned a passion into career.
John Gallagher
Talk: Squash Production Defects Quickly - The Power of Structured Logging in Rails
A joyful programming coach and Ruby engineer.
Seong-Heon Jung
Talk: Using Ractors and Making Ractors Usable
Marco Roth
Talk: Leveling Up Developer Tooling For The Modern Rails & Hotwire Era
Independent Consultant & Open Source Contributor
Piotr Szotkowski
Talk: Simplify, Then Add Lightness
Senior Staff Developer at Shopify
Joel Drapper
Talk: Building Beautiful Views in Ruby with Phlex
Full-stack engineer at Prevail — author and maintainer of Phlex, Quickdraw, Literal, Morphlex
Yaroslav Shmarov
Talk: Rails 8 Frontend: 10 commandments and 7 deadly sins in 2025
SupeRails.com
Yudai Takada
Talk: How does Lrama make the Ruby parser grammar G.O.A.T.?
OSS programmer. Committer of Lrama. Member of RuboCop RSpec team. Maintainer of Committee. Co-Founder of Kyobashi.rb.
Andrei Bondarev
Talk: Build an AI agent in 15 min
Author of Langchain.rb.
Obie Fernandez
Talk: Patterns of Application Development Using AI
Bartosz Blimke
Talk: WebMock Unmocked
Creator and maintainer of WebMock
Marko Ćilimković
Talk: Lessons From Escaping the Dependency Upgrade Maze
Software Developer at Infinum
Erica Weistrand
Talk: Ruby off Rails
Developer at 84codes
Tim Kächele
Talk: Mechanical sympathy, or: writing fast ruby programs
Software Engineer at Börse Stuttgart
Kasper Timm Hansen
Talk: How to Break into Reading Open Source
Former Rails core (2016-2022), now Rails consulting.