There are JRuby users all over the world! This is a good thing, too, since there are Ruby, Java, and JRuby conferences, events, and user groups all over the world.
The users listed on this wiki page have volunteered to act as local "JRuby Delegates" when the JRuby core team members are unable to travel. They can answer questions about JRuby, meet up for lunch/dinner/hacking, speak at nearby conferences, and generally act as a local JRuby "expert" for some definition of "expert". You should feel comfortable contacting them directly with questions, and know that they'll either help you or put you in contact with someone who can.
If you are interested in joining this list, we would recommend you meet the following criteria:
In return, the JRuby community will help you fulfill the role of JRuby Delegate, providing speaking tips, presentation material, demos, and more. There's no requirement to start doing conferences, of course; we really just want folks that can help new JRubyists feel comfortable. And of course the JRuby community and the core team are always standing by to assist you.
Note that you can also include your Github or Twitter (or other) information if you'd prefer not to publicize your email here. Just make sure there's a way for folks to contact you, and we're all good!
Welcome to the JRuby Community!
Anil Wadghule - use JRuby at work for several projects for more than an year. Have contributed to JRuby by couple of trivial patches. Recommends using JRuby for production deployments. Find me on Twitter, and GitHub
L. David Varvel email@example.com - JRuby on Rails, Java library integration, practiced public speaker. Interested in bridging the gap between the Java and JRuby communities.
Nick Zalabak - Uses JRuby day to day and has been using JRuby to simplify existing Java applications for many years, very familiar with the Java interop features, as well as performance tuning JRuby/Java applications. I'm always willing to lend a helping hand or lead a discussion. Check my blog or hit me up on Twitter.
Erik Michaels-Ober firstname.lastname@example.org @sferik - Author of a number of gems that support JRuby. I also help maintain support for Travis CI, which involves debugging JRuby issues for a wide variety of libraries and applications. Occasional speaker on Ruby and open-source software at conferences and meetups.
Frederic Jean email@example.com, firstname.lastname@example.org - Staff Engineer at Sun Microsystems currently working on http://kenai.com . Speaker coordinator for the Boulder JUG and attends Derailed and Boulder Ruby. Works on JRuby MemCache Client.
OpenLogic - We wrote a tool that discovers open source code on developer machines and servers using JRuby. It's been used by large enterprises, small shops, and everything in between since 2006.
Kinetic Data developed Kinetic Task, a workflow engine leveraging the JRuby platform, and is continuing to expand usage of JRuby in other areas and products.
Three members of the JRuby core team are based in this area and attend the local Ruby user group.
Jeff Lembeck email@example.com - using JRuby daily with Sinatra to leverage legacy Java services while making mobile web apps.
Chris Ochs firstname.lastname@example.org - Using jruby with rails/sinatra to run large scale social games.