Moos was born and raised on a wheat and cattle ranch in rural Washington, then moved to Olympia at age fourteen when his father was named director of agriculture for governor Daniel J. Evans.

Moos graduated from Olympia High School and played college football at Washington State under head coach Jim Sweeney.

[5] Terms of Moos' departure included an agreement that paid him $200,000 annually for not taking an administrative position at a Power Five school west of the Mississippi River.

[5] The exact reasons for his resignation from Oregon are unknown, but the dispute with Knight regarding funding for an arena to replace the aging McArthur Court "strained a bit toward the end.

After firing Mike Riley at the end of the 2017 season, Moos hired former Nebraska quarterback Scott Frost from UCF to serve as head football coach.