In October 2014, Dhinsa was reported to have signed a contract with WWE and would begin training to become a professional wrestler at the WWE Performance Center. He made his in-ring debut at a NXT house show in Orlando, Florida on April 4, 2015, competing in a battle royal, which was won by Scott Dawson. By February 2016 Dhinsa had formed a tag team with Gzim Selmani and they became known as the Authors of Pain in April 2016. Dhinsa and Selmani made their televised NXT debuts on June 8, 2016 at ; following the NXT Tag Team Championship match, they attacked former champions American Alpha before being joined on stage by veteran manager Paul Ellering. The duo had a push during his time in NXT, winning the Dusty Rhodes Tag Team Classic, after defeating TM-61 at and winning at the NXT Tag Team Championship when they defeated #DIY. The duo retained the titles at and in a ladder match to retain the titles. The duo turned face on August 9 edition of NXT after being attacked by SAnitY. At, the Authors of Pain lost the titles to SAnitY at, Authors of Pain and Roderick Strong competed in a 3 team WarGames match which was won by The Undisputed Era. At, Authors of Pain got a rematch but failed to win back the titles. At, Authors of Pain competed in a Triple threat tag team match for the NXT Tag Team Championship and Dusty Rhodes Tag Team Classic trophy which was won by The Undisputed Era.
On the April 9 episode of Raw, The Authors of Pain, along with Ellering, made their main roster debut, defeating Heath Slater and Rhyno. After the match, Akam and Rezar ended their partnership with Ellering by pushing him away and leaving him ringside as they returned backstage. On the September 3 episode of Raw, The Authors of Pain, now under the shortened name of "AOP", were accompanied to the ring by the 205 LiveGeneral Manager, Drake Maverick, who announced himself as their new manager. On the November 5 episode of Raw, The Authors of Pain defeated Seth Rollins in a handicap match to win the Raw Tag Team Championshipfor the first time. They went on to defeat SmackDown's Tag Team ChampionsCesaro and Sheamus in an interbrand Champion vs Champion match at Survivor Series. They lost the titles to Bobby Roode and Chad Gable on the December 10 episode of Raw. In January 2019 Akam suffered an undisclosed leg injury that reportedly would keep him out for "at least a few months". He would be cleared to return to action in May, however the team has yet to return to action. He and Rezar returned to action at Super ShowDown on June 7, 2019. In September 2019, AOP began appearing in vignettes, warning of their return. During the 2019 WWE Draft in October, AOP went undrafted, becoming free agents and able to choose which brand to sign with. Three days after the draft's conclusion, AOP signed with Raw, remaining on the brand. Then, they started allying with Seth Rollins after they helped beat down Kevin Owens on the Raw after Survivor Series.
