Veal’s debut was with a guest appearance in 2007, in a voice role for Holi Hana/Hana’s Helpline as the character Ellen. She then was cast in her first major role as the main character Lucy in Disney Channel UK’s As the Bell Rings, one of many adaptations of the original Italian version, entitled Quelli dell’intervallo. She played the role for two years until 2009, when the show ended.

In 2012, Veal started a YouTube Channel entitled “jenniferveal28” in which her content was focused more towards comedy.

In 2012, Veal landed the recurring role of Nanny Agatha on Disney Channel sitcom Jessie, which she held until 2013. Her performances as the “hideous” nanny brought notoriety to Veal, as she received praise for her performance. Later in 2012, Veal made a guest appearance as Chelsea in the Nickelodeon sitcom Victorious, in the episode “Tori Goes Platinum”. For her performance, she earned a Young Artist Award nomination, though she did not win.

In 2013, she met YouTuber and actor Lucas Cruikshank, who is best known for creating the character Fred, and soon began to collaborate together in several videos on his channel, which varied from skits and vlogs. At the time, the channel had been titled “Lucas and Jenny”. The duo received much attention and praise for their work, thus helping Veal’s career.

In 2014, Veal departed from Cruikshank’s channel to focus on her channel, as well as pursue other ventures. Her activity on the platform has fluctuated, retiring in 2016, and making a comeback in early 2019, before soon taking yet another hiatus for an undefined time from YouTube. She published a youtube video in February of 2020 before taking yet another break.

In 2015, Veal had a recurring voice role as Ally in the Disney Channel Animated Series Descendants: Wicked World, which is part of the Descendants franchise. In 2016, she recurred as Abby in the television series This Just In. Veal played the character until the show’s end in 2017. Also in 2017, she had a guest role as Princess Magma in Penn Zero: Part-Time Hero.

In 2018, Veal made her film debut as the main role of Brooke in the action film The Agency. In 2019, she began starring in a recurring voice role in the Disney Channel animated series Rapunzel’s Tangled Adventure, and also appeared in two episodes of the television show Evil Touch as Vicki.