I revel in being thrown an large data set (or sufficiently difficult problem) and having to find the solution without being told the question.
Being around a good team is key. Intelligent, driven, genuine, and curious people are a must - these are personal traits that I like to see in others.
Specialties: mathematical programming, converting theory to practical application, time series research and analysis
Languages: python, mathematica, haskell, sh, sql, F#, C#, VBA (unfortunately but there is a sublte beauty to it), pretty much anything else if I get a month to hack around on it first.