After completing a second internship at the inland editors, Stax graduated from the University of Amsterdam in 2009.

[1] In June 2013 she became one of the fixed faces of the morning and daytime broadcasts of the NOS Journaal; since May 2015, Stax has also presented the evening bulletins.

Stax was on air during the Paris attacks in January 2015, breaking the news of both the Charlie Hebdo shooting and the hostage-taking at a Jewish supermarket two days later.

From 2015, Stax presented the election results as the successor to Herman van der Zandt.

In 2016, she wore a shirt with Palestinian black and white kufiyyeh in a gesture against Israeli human rights violations.