She began her career appearing in films The Ballad of the Windshield Washers (1998), The Gateway of Europe (1999), The Hexer (2001) and The Revenge (2002), receiving Polish Academy Award for Best Supporting Actress nomination for latter.

She won her second Polish Academy Award for Best Actress for performance in the 2021 comedy-drama film, My Wonderful Life.

Buzek starred in a various internationally-produced films, such as Nightwatching (2007), Hummingbird (2013), The Innocents (2016), High Life (2018), After Blue (2021) and Dovbush (2023).

[1] In 2013 she made her American film debut starring opposite Jason Statham in the action crime drama Hummingbird.

In 2016, Buzek starred alongside Lou de Laâge and Agata Kulesza in the drama film The Innocents receiving Polish Academy Award nomination for Best Supporting Actress.