He is known for playing Spencer on Good Luck Charlie, Josh Wheaton in God's Not Dead, and Victor Flynn on Power Book IV: Force.

In the spring of 2006, a talent agent on the judging panel of a regional dance competition offered Harper an agency representation.

[4] Harper also began his recurring role as Spencer Walsh on Disney Channel's Good Luck Charlie, playing alongside Bridgit Mendler, and guest-starred on an episode of Wizards of Waverly Place.

Next, Harper starred as Ian Chandler in short lived MTV series Happyland co-starring alongside Bianca A. Santos and Katherine McNamara.

[12] In 2017, Harper played the role of Robbie, a charming waiter at the resort who woos and then cheats on Baby's older sister, Lisa, in the TV movie Dirty Dancing for ABC.

[18] In 2020, Harper starred as Junior in the Starz series Hightown,[19] and the Hulu miniseries, A Teacher as Logan Davis.

The music video was released a couple of weeks prior and features Harper dancing and playing guitar.

The deluxe version of his debut album "Shane Harper" was released on February 14, 2012, at Target stores nationwide and features four bonus tracks.

[24] April 29, 2016, Harper announced on his Twitter that he would support Jacob Whitesides on his The Lovesick Tour, which begun in May and ended in October.