Early career Reis began his managerial career at
VfL Bochum in 2009, working in the club’s youth department. He initially served as a scout before taking on roles as a coach and assistant to the head of the youth program. In February 2012, he transitioned to the first team as an assistant coach under
Karsten Neitzel, a position he held until 9 April 2013. Following his time with the first team, Reis took charge of the U-19 team and, in January 2014, became the head coach of the U-23 squad. By January 2015, he returned to the senior team as an assistant coach. On March 30, 2015, he earned the prestigious
DFB Football Coaching License, solidifying his qualifications as a top-level coach. On 6 September 2019, After previously serving as the women’s team and as the academy’s head coach, Reis was appointed manager of
VfL Bochum marking the beginning of his tenure in senior management. Under his leadership, the team displayed resilience and a clear tactical structure, which eventually led to their promotion to the
Bundesliga in the
2020–21 season after an 11 year absence from
Germany’s top flight. His managerial style emphasized disciplined defensive organization combined with quick transitions, earning him recognition as a tactically astute coach. Reis continued to guide
VfL Bochum through their return to the
Bundesliga, ensuring competitive performances against established top-tier teams. His ability to motivate players and adapt strategies during challenging periods became a defining aspect of his managerial career. After leading
VfL Bochum to the
Bundesliga, Reis faced a challenging
2022–23 season. The team endured their worst start in
Bundesliga history, losing their first six matches and struggling at both ends of the pitch. Despite his efforts to turn things around, results did not improve, and
Bochum remained at the bottom of the table. In September 2022, the club decided to part ways with Reis, ending a tenure that had seen both great success and significant challenges. In October 2022, Reis was appointed as manager of Bundesliga strugglers
Schalke 04. After four defeats in the first seven games of the
2023–24 2. Bundesliga season, he was sacked on 27 September 2023.
Samsunspor On 12 June 2024, Reis has been the head coach of
Süper Lig club
Samsunspor, succeeding
Markus Gisdol. In his first season with
Samsunspor, Reis achieved significant success, guiding the team to a strong performance in the first half of the league. Samsunspor finished the first half of the
2024–25 Süper Lig season in 3rd place, demonstrating solid form and positioning themselves as one of the top teams in the league. Despite facing a transfer ban during the
2024–25 season, the team remarkably finished third in the
Süper Lig, securing qualification for the
UEFA Europa League for the first time in the club’s history. As a result, Samsunspor will compete in the
Europa League play-off round in the
2025–26 season. ==Career statistics==