At age ten, Buechner got the lead role in a Toronto film production Saint Monica.

[4] In 2005, Buechner played the daughter of Brooke Shields in the Tom Green-led film Bob the Butler.

[6] Buechner has notable recurring roles on the television series Caprica, The 100, and UnREAL.

In 2015, she played the lead role of Annie Emmerson in the Lifetime television film Jim Henson's Turkey Hollow.

[7][8] In 2023, Buechner voiced and provided facial expressions for the character of Ashley Graham in the video game Resident Evil 4.