Aleyse Shannon

In 2018, Shannon made her television debut in the fantasy drama series Charmed, portraying Jada Shields. In 2019, Shannon starred as Kris Waterson in a second reboot of Black Christmas, a contemporary interpretation of the 1974 horror cult classic directed by Sophia Takal and produced by Blumhouse Productions. Shannon has stated that the film was her first major shoot. She had not seen the original films prior, saying of eventually watching the original, "It was the first thing I did after shooting the movie. I'm one of those people that's like, I can't watch the old one while shooting the new one, I'm just going to feel inadequate. I fought it off for a bit, but I watched it and loved it. It was good..."

When Leverage: Redemption, an Amazon Freevee continuation of the 2008 TNT TV series Leverage, was announced in 2020, it was revealed that a main character from the original series, Alec Hardison (Aldis Hodge), would be reduced to a supporting role, with Hodge seeking to focus on other projects. It was subsequently reported that Shannon would be cast as Breanna Casey, a skilled hacker and the younger foster sister of Hardison, who would effectively replace him in the primary cast.

Aside from her film and television career, Shannon continues to act in plays. In 2023, she performed in Thomas Bradshaw's rendition of The Seagull, first written by Anton Chekhov in 1895.