He worked for Blizzard Entertainment from 1997 to 2005 and was a co-founder and CEO of Red 5 Studios during the development and promotion of the video game Firefall.

He moved to the United States to attend college at the University of Rochester, earning a Bachelor of Arts in cognitive science in 1992.

Notably, he devised a marketing strategy involving a Firefall-themed e-sports bus intended as both a mobile promotional tool and a server for LAN competitions during the game's beta phase.

[9] Red 5 employees described Kern as being prone to extended absences and having an "erratic, impulsive, and very disruptive" leadership style.

[21] In August 2023, Kern attracted attention when he posted a critical tweet regarding the start menu of the then-upcoming Bethesda Softworks game Starfield.

In March 2024, he railed against wokeness, telling Fox News that there is a "coordinated effort to insert diversity politics into games".