Ehasz began his writing career in the year 2000, working as a staff writer on Ed and on Mission Hill.

In 2001 he took a position as story editor on Matt Groening's animated Fox series Futurama, where he worked until its cancellation in 2003.

[3] In 2017, Ehasz co-founded the multimedia studio "Wonderstorm" with video game director Justin Richmond (Uncharted).

Notably, General Amaya, who is "a major step forward in portraying a deaf person as a badass military leader".

[11] According to CBR writer Meagan Damore, in November 2019, a female former employee of Ehasz who never worked at Wonderstorm alleged that "he would bring his children to work and leave them with female production staff members without asking", treating her "like his own personal assistant […] transitioning her editorial duties to a group and shut down her ideas.