Nate is a Rails performance expert. He’s the author of several books, and he also maintains the Puma web server project.

Noah spent many years charting exactly how fast Ruby is for various tasks, and continues this work at speed.yjit.org. On the YJIT team, he bothers younger, more vigorous programmers with questions like, “would you say five warmup iterations are enough if we set this parameter?”

Siddharth is the CTO of InVideo. He has been a Ruby developer for fifteen years and has also been an investment banker and musician.

Yarden is a Software Engineer at Rookout, where you can find her in the office jumping between 6 different programming languages a day. She loves learning about new technology, creating iOS apps and making everything she can automated.

Elixir developer, former Ruby dev for over a decade. Freelancer, streaming at https://www.twitch.tv/Elixir_Bytes. Podcasting about freelancing for software devs at https://dreamclients.io

Anita is a self-learner who entered the Ruby world in 2013 as a backend developer. Since then, she has started a master’s degree in psychology. Initially a hobby, with time, psychology turned into a valuable experience that helped her transition to a managerial path in IT.

Charles works on JRuby and JVM language technologies at Red Hat.

Cristian is a software engineer in love with Ruby. He has been working with Rails since the release of Rails 3, more than 10 years ago. Currently, he leads performance optimization efforts at Zendesk as a Group Tech Lead.

Jeremy Evans is a Ruby committer who focuses on fixing bugs in Ruby. He the lead developer of the Sequel database library, the Roda web toolkit, the Rodauth authentication framework, and many other Ruby libraries. He is the author of “Polished Ruby Programming”.

Nerd, cyclist, and blogger. Jônatas is a pair programming evangelist, Vim editor user and enthusiast.

Michael is a developer keen on the people side of things. He loves pairing, and in particular with people new to writing software. He especially likes driving software out with tests and directing the evolution of the design. In his spare time he is busy camping with his 4 kids.

Paolo Perrotta is the author of “Metaprogramming Ruby” and “Programming Machine Learning”. He's been coding for most of his life, ranging from embedded to enterprise software, computer games, and web apps. He lives in Bologna, Italy.

Ratnadeep (rtdp), is a software craftsman, an entrepreneur and work with Ruby for the past 13 years. He runs a Rails consulting company BetaCraft Technologies. Earlier he was a digital nomad and changed his location every few weeks, coding Ruby and exploring places.

Rodrigo works with development since 1997, have worked with many languages and platforms before falling in love with Ruby and now has the objective to help developers to use the best tools for each job so they can solve hard problems, with less bugs and have more free time.

Selena is a full-stack lead engineer at Fresho in Melbourne Australia who is particularly passionate about TDD. As a self-taught coder with a background in management, she is well-equipped to mentor others. In her spare time, she is a nak muay ying, a professional kickboxer.

Stephan is working as a Software Developer at NEW WORK SE! When not working he's traveling with his family, hiking or sailing.

Audy's background is as a backend developer, then he's focused on SysAdmin/DevOps for the last 8 years. The guy who gets excited when talking about cloud technology and container orchestration!

Tim is a core team member of Hanami, dry-rb and rom-rb, and a Principal Engineer at Buildkite. He’s been writing Ruby for over 20 years and still loves it! He works to bring the joy of Ruby to the experience of writing real, maintainable apps of all shapes and sizes.

Yuji is a software developer based in Adelaide, South Australia. He is originally from Tokyo, Japan. He used to be a Windows desktop application developer until he discovered Ruby.