Barton began his acting career in 2014, making his television debut with a small role in the comedy series
Workaholics. In 2015, he made appeared in guest roles on
See Dad Run,
Instant Mom, and
Henry Danger. In 2016, Barton was cast as Beast Diaz in the
Disney Channel sitcom
Stuck in the Middle. The show ran for three seasons, concluding in 2018, during which he appeared in all episodes. In 2019, he played young Diego in the live-action film
Dora and the Lost City of Gold. He voiced Lionel in the
Disney Jr. animated series
Fancy Nancy, Leo in
Elena of Avalor, and has made appearances on ''
Bunk'd and Just Roll with It. In 2021, he starred as Marshall in Under Wraps, a Halloween-themed remake of the 1997 film. In 2022, he reprised his role in the sequel Under Wraps 2''. From 2022 to 2023, Barton starred as Colby Madden/Flashform in the Disney Channel Original series
The Villains of Valley View, a superhero comedy series. In 2024, it was confirmed that he had joined the cast of the
Disney Channel Original movie
Zombies 4: Dawn of the Vampires, the fourth film installment of the
series. He played Victor, a vampire character, marking his debut in the fantasy/teen musical genre. He appeared with
Freya Skye in the music video for "Snow Angels", their duet from
Zombies 4. Barton was a part of the
Descendants/Zombies: Worlds Collide Tour. On August 15, 2025, it was announced that he was cast as Jake for the Disney+ and Disney Channel series
Coven Academy, slated for release in 2026. In September 2025, it was announced that Malachi was cast as Fletch in
Camp Rock 3, which will be released on
Disney+ and
Disney Channel. == Filmography ==