Russ Olsen started his career doing that other kind of engineering, the sort that involves motors, gears and getting dirty. Pretty rapidly the wonder of computer programming lured Russ away, which probably explains why most of his fingers are still intact. Since turning to coding, Russ has worked on everything from 3D design and image processing software to database query engines and workflow systems. Along with being a frequent conference speaker, Russ is the author of three books about programming, including Design Patterns in Ruby and Eloquent Ruby. Russ's most recent book is Getting Clojure.