I've been using Ruby and involved with the NYC.rb meetup since the fall of 2005. During that time I've done Rails applications for the New York Jets, Flavorpill, BBC, Channel 4 UK, KGB, Efficiency 2.0, and my current employer Benchmark Solutions. I first started working with service architectures in Ruby at KGB. There we had a complex application with search, real-time indexing, and machine learning. That was in addition to all the standard web application stuff. Due to the complexity of the various pieces, we split it off into multiple services and I've been interested in the topic since.
My formal background is in CS with an emphasis on AI, machine learning, search, and natural language processing. I suppose that accounts for my other passion: machine learning. I organize the machine learning meetup in NYC which regularly features speakers from leading universities and labs giving talks about the latest in the field.
I'm pauldix on Twitter, Github, and most every other service on the web. Feel free to drop me a line to talk about Ruby, services, or machine learning.