Dan served as my mentor for the first month of my apprenticeship at thoughtbot, inc. and as a trusted advisor for the duration of my time. Dan is an exceptional mentor and I learned more working with him for one month than previous work put together. His attention to detail, patience with questions, and deep technical knowledge were invaluable to me as I continued to learn Rails.
Additionally, Dan is an excellent consultant who cultivates solid client relationships, serving as a trusted thought partner not just with code decisions, but product design, and innovative workflow using agile methods. In my opinion, he also exhibits the most important (and at times rarest) consulting quality: unquestioned integrity.
Finally, Dan is fun to work with. During intense work-sessions, his capacity for levity and random discussion is unparalleled, which provides a great balance to work and improves productivity.
I highly recommend Dan as a colleague and consultant. I would welcome the opportunity to work with him again in the future.