After graduating, Peterson joined the
Texas A&M coaching staff as a
graduate assistant. In 2012, Peterson was hired at
Fresno State to coach the secondary and outside linebackers while also serving as recruiting coordinator and special teams coach. Following his time at Fresno State, Peterson took a job as the safeties coach at
New Mexico, earning a promotion to
defensive coordinator in 2019. He then joined Kansas in 2020, where he spent four seasons coaching defensive backs and was elevated to co-defensive coordinator in 2023. During his tenure, he helped Kansas secure back-to-back bowl berths for the second time in program history. == Personal life ==