Jeremy Crawford

Jeremy Crawford is a game designer who has worked primarily on role-playing games. He is most widely known for being the Lead Rules Designer for Wizards of the Coast.
Career.
Jeremy Crawford co-designed and edited the "Blue Rose" role-playing game along with Steve Kenson (2005).
He was hired by Wizards of the Coast in 2007 as a game designer for their flagship "Dungeons & Dragons" product, and has worked there since then. His "Dungeons & Dragons" design credits include "Player's Handbook 2" (2009), "Dungeon Master's Kit" (2010), and "Heroes of the Fallen Lands" (2010).
He was the rules manager for the 4th Edition of "Dungeons & Dragons." Development on a new edition started in 2011 and Crawford became the Co-Lead Designer, along with Mike Mearls, of the 5th Edition of "Dungeons & Dragons". Crawford also became the lead rules developer and managing editor of the edition. Under Crawford and Mearls, there became a concerted effort to boost inclusiveness both in the game and in the development of the game. The 5th Edition version of the game credits women as contributors to its design more than any previous one: about 26 percent are female, as opposed to 20 percent in 4th Edition and 12 percent in 3rd Edition. He is credited as one of the authors of the "Player's Handbook" for the 5th edition of "Dungeons & Dragons", along with several other books in the edition. He also authors the monthly "Sage Advice" newsletter.