[15] In 2007, he won a bronze medal at the Pan American Games and competed at the World Championships.

[16] In 2012, he became the first Canadian wrestler with South Asian ethnicity to represent Canada at the Summer Olympics.

[17] Bhullar was one of the founding coaches of the UFV Cascades wrestling team at University of the Fraser Valley.

[19] Over the next few years, Bhullar competed exclusively in his native Canada and remained undefeated with a record of six wins.

Arjan won the vacant BFL Heavyweight Title with a victory over Blake Nash on October 17, 2015.

Bhullar made his promotional debut at UFC 215 on September 9, 2017, against Luis Henrique.

[28] On July 3, 2019, it was announced that Bhullar signed a deal with Asia-based MMA promotion ONE Championship, and was expected to make his promotional debut against Mauro Cerilli at ONE Championship: Dawn of Heroes on August 2, 2019.

[29][30] However, Cerilli pulled out of the bout due to staph infection and the fight was cancelled.

[31] The fight eventually took place at ONE Championship: Century on October 13, 2019, with Bhullar winning by unanimous decision.

[49] Through his MMA career, Bhullar has developed a friendship with fellow Indo-Canadian and former WWE champion Jinder Mahal.