Kuntz is the son of Kathy and Theo Kuntz and he has two brothers, Jimmy and Louis. He attended Chartiers Valley High School in Pennsylvania, where he played basketball and football. Kuntz suffered a ruptured spleen prior to his senior season of football, forcing him to miss the season.[1] On the basketball court, he won a WPIAL title alongside future NBA player and friend T. J. McConnell.[2]
After going undrafted in 2017, Kuntz was signed by the New England Patriots on August 28, 2017.[3] He was waived the following day.[5] After his experience with the Patriots, Kuntz decided to focus more on being a long snapper.[10]
Denver Broncos
Kuntz was signed by the Denver Broncos on March 21, 2018.[11] He was waived on June 14.[12]
Jacksonville Jaguars
The Jacksonville Jaguars signed him to their practice squad on December 17.[13] Kuntz signed a futures contract with the Jaguars on December 31.[14] He was waived on June 13, 2019.[15]
Pittsburgh Steelers (first stint)
Kuntz was signed by the Pittsburgh Steelers on August 15, 2019.[16] He played in the preseason finale against the Carolina Panthers and had five tackles and a sack.[4] Kuntz was waived during final roster cuts on August 31.[17]
Dallas Renegades
His performance in the preseason drew the attention of former Dallas Cowboys fullback Daryl Johnston, the director of player personnel of the Dallas Renegades of the XFL. Johnston was impressed by Kuntz's abilities as a long snapper and he suggested to assistant coach Kenny Perry that they sign him as a long snapper. Even though the Renegades already had a long snapper, Kuntz got the job due to his superior coverage abilities.[10] Five games into the season, the XFL season was canceled due to the COVID-19 pandemic.[1] He had his contract terminated when the league suspended operations on April 10, 2020.[18]
Pittsburgh Steelers (second stint)
Kuntz was signed by the Steelers on March 30, 2020.[6] He was waived on August 2.[19]
Kuntz had a tryout with the Houston Texans on August 20, 2020,[20] and with the Indianapolis Colts on August 23.[21] On November 24, the Steelers signed Kuntz to their practice squad.[22] He was released on December 23, 2020,[23] and re-signed to the practice squad on December 29, 2020.[24] He was again released on January 6, 2021.[25] On January 14, 2021, Kuntz signed a reserve/futures contract with the Steelers.[26]
On February 22, 2023, Kuntz re-signed with the Steelers on a one-year contract.[27]
On March 14, 2024, Kuntz signed a three-year contract extension with the Steelers.[28]