Mitch was reared in Gillette, Wyoming; and, his family tree is rooted in Campbell County's early ranching and energy industries. Mitch moved to Laramie in 1996 to attend the University of Wyoming, receiving his B.A. degree in 2000 and his J.D. degree in 2004. After graduating from the University of Wyoming College of Law, he joined the firm of Nicholas & Tangeman, LLC.

Mitch became a partner with Nicholas & Tangeman in 2015. His practice focuses in the areas of property law, oil & gas law, mining law, natural resources law, environmental law, ranching and agriculture, real estate transactions, land use and planning, local government law, administrative law, employment law, and civil litigation in both federal and state courts (including complex litigation). Having represented individuals, landowners (both large and small), mineral companies, and various types of businesses, Mitch's practice and experience is very diverse.

Mitch is admitted to practice in Wyoming and before the United States District Court for the District of Wyoming, the United States District Court of North Dakota, the United States District Court for the Northern District of Illinois, the United States Court of Federal Claims, and the United States Court of Appeals for the Federal Circuit. He is a member of the Rocky Mountain Mineral Law Foundation. He is also a member of the Wyoming Bar Association, the Wyoming Trial Lawyers Association, and the National Trial Lawyers Association. In 2012, Mitch was recognized by the National Trial Lawyers as a "Top 40 under 40" trial lawyer.

In his free time, Mitch enjoys spending time with his wife, Julie, in Wyoming's great outdoors cycling, rock climbing, fly fishing, and backpacking.