Early career Steffen coached SC Kapellen-Erft, leading them to promotion to the
Oberliga Niederrhein in the 2003–04 season. He later worked with the U23 and U19 teams at MSV Duisburg, and with Borussia Mönchengladbach's U17 and U19 teams.
Stuttgarter Kickers On 30 September 2013, he became head coach of
3. Liga side
Stuttgarter Kickers. His contract, initially set to run until 2015, was extended but terminated in November 2015 following poor results.
Preußen Münster and Chemnitzer FC Steffen was appointed head coach of
SC Preußen Münster in December 2015 but was dismissed in October 2016. He later joined
Chemnitzer FC for the 2017–18 season, but was released in January 2018.
SV Elversberg On 29 October 2018, Steffen took over
SV Elversberg in the
Regionalliga Südwest. He led the club to promotion to the 3. Liga in
2021–22 and then to the
2. Bundesliga in
2022–23. Under his guidance, the team finished 11th in their debut second-division season and 3rd in the
following campaign, narrowly missing out on Bundesliga promotion after losing the play-offs against
1. FC Heidenheim.
Werder Bremen On 29 May 2025, Steffen became the head coach of Bundesliga club
SV Werder Bremen, signing a contract until 2028. He was sacked on 1 February 2026. ==Managerial statistics==