On April 15, 2015, Pinder made his major league debut against the Baltimore Orioles, going one inning and allowing one hit in a 7-5 loss. He was optioned to Triple-A on April 21 in exchange for Chasen Shreve. He was recalled on May 9 after Chris Martin was placed on the disabled list. He was sent back down on May 24 to make room for Jacob Lindgren. On June 19, Pinder was called up yet again after Martin was optioned to triple-A. On August 30, Pinder collected his first major league hit, an RBI double, off Atlanta Braves pitcher Jake Brigham. It would be the only at-bat of his career, giving him a career batting average of 1.000. He finished the 2015 season by making 25 relief appearances with an 0-2 record and a 2.93 ERA.

On April 22, 2016, Pinder was placed on the 15-day disabled list due to a right elbow strain. The next day on April 23, an MRI revealed that there was a partially torn UCL in the right elbow. After seeking a second opinion with Dr. James Andrews, Pinder decided to forgo the rest of the 2016 season as he chose to have Tommy John surgery. On November 8, Pinder was designated for assignment. On July 21, 2017, he was released from the Yankees organization.

The Los Angeles Angels signed Pinder on August 4, 2017. He was released on June 18, 2018.

On June 25, 2018, Pinder signed with the Long Island Ducks of the Atlantic League of Professional Baseball. He announced his retirement on July 23, 2018.