Matthew is an energetic 15 year veteran of enterprise software development, world-traveling open source educator, and co-founder of Ambient Ideas, LLC, a US consultancy. Matthew currently is the director of training at GitHub.com, author of the Git Master Class series for O’Reilly, speaker on the No Fluff Just Stuff tour, author of three of the top 10 DZone RefCards, including the Git RefCard, and President of the Denver Open Source Users Group.