He portrayed Chirag Gupta in the Diary of a Wimpy Kid film franchise and Ravi Ross on the Disney Channel Original Series Jessie and its subsequent spin-off Bunk'd.

[5][3] Brar began his acting career at the age of 11, starring as Indian middle schooler Chirag Gupta in the comedy feature film Diary of a Wimpy Kid.

[2][8] Ravi was originally intended to be a South American boy named Javier, but casting directors were impressed with Brar during the audition process and reimagined the character for him.

[14] Brar lived in the Los Angeles area with his parents and older sister,[2] until he moved in with fellow actors Cameron Boyce and Sophie Reynolds in May 2019.

[15][16] On November 30, 2023, Brar penned an essay for Teen Vogue, detailing his struggles with PTSD and major depressive disorder and coming out as bisexual.