Hauser's first coaching position was as an assistant at his alma materWittenberg for one season in 2003. He was a graduate assistant at Northern Illinois before being promoted to defensive backs coach in 2006.[6] He left NIU for his first defensive coordinator position at Wayne State. In his three seasons with the Warriors he led a defense that led NCAA Division II in sacks, coached three NFL free-agents signees, and his defense helped Wayne State reach the national championship game for the first time in 2011.[7]
After brief stops at Illinois and The Citadel he came back to the state of Ohio and the MAC where he began a long stint at Miami (OH) under Chuck Martin with the first two years as the defensive backs coach before being promoted to co-defensive coordinator in 2016.[8][4] In 2016 and 2017 his defenses finished third in the MAC in scoring defense both seasons and had another good showing by placing fourth in 2018.[9][10] In 2019 they were better. They finished second in the MAC in scoring and third in total defense while leading Miami to a MAC championship that year.[11][12][13] In 2020 and 2021 Miami finished third in the MAC in total defense both years.[14][15]
Hauser joined Tim Albin's staff at Ohio in 2022, first as the safeties coach, before also taking over the duties as defensive passing game coordinator a year later.[16] Prior to the 2024 season he was promoted to defensive coordinator.[17][18]