After one season , he moved on to Northern Illinois where he served as a graduate assistant offensive line coach for two seasons .
Hachmann joined the coaching profession in 1994 when he was a recruiting assistant at Northwestern University .
After one season , Hachmann moved on to Northern Illinois where Hachmann served as a graduate assistant offensive line coach for two seasons .
Hachmann joined the coaching profession in 1994 when he was a recruiting assistant at Northwestern University .