After graduating high school, he did a post-graduate year at esteemed Choate Rosemary Hall .He graduated in 1991 from Dartmouth College, where he earned a bachelor's degree in English and was a quarterback for the football team.
In 2012, Koldyke starred as the lead character in the short-lived ABC comedy series Work It and later guest starred in HBO's The Newsroom. 2013 saw him star in another ABC sitcom, Back in the Game, opposite James Caan and Maggie Lawson. He has recently been seen in a significant arc on Showtime's Masters of Sex as Teacher and football coach Paul Edley.
Koldyke was seen on the big screen in 2016 in a supporting role for Disney's The Finest Hours alongside Chris Pine, Casey Affleck, Eric Bana, and Ben Foster.
In early 2017, Lawson filed for divorce from Koldyke.
