Seifert began working as an assistant coach at Ystads IF in 2013, and the following season he took on the role of head coach. From 2019 to 2023, Seifert was the head coach of the IFK Ystad club. In October 2024 he was hired as the head coach of his former club KIF Kolding to replace the fired Christian Hjermind. The team was at the time battling relegation neck and neck with Grindsted at the bottom of the table. He was in turn fired from the job in March 2025 due to disappointing results. The team was at the time in last place in the Danish League. Despite his dismissal, the team was still relegated on the last day of the season. This was the first time the club was relegated in 41 years.