First coming to attention in the recurring role of Emma in the 2013–2014 Nickelodeon series The Haunted Hathaways, Bassinger went on to star as Bella Dawson, the lead role in Nickelodeon's 2015–2016 television series Bella and the Bulldogs.

From 2020 to 2022, Bassinger played the title role on the American superhero television series Stargirl from DC Universe and The CW.

[8] In 2014, Bassinger was cast in the lead role of the Nickelodeon comedy series Bella and the Bulldogs,[9] which ran for two seasons from 2015 to 2016.

[10] Also in 2018, Bassinger played the role of Roni in the Hulu television series All Night from AwesomenessTV.

[12] In 2018, Bassinger was cast in the lead role of Courtney Whitmore in the television series Stargirl,[13] which premiered on DC Universe and The CW in May 2020.