From 2005 to 2008, Rasiejewski studied
sports management in
Düsseldorf and also obtained his DFB A coaching license. As part of his studies to become a sports manager, he spent around a year as an intern at Hannover 96, where he worked as sports coordinator at his old club from April 2008 and supported the work of sports director
Christian Hochstätter. From July 2011 to June 2015, Rasiejewski coached the
TSG 1899 Hoffenheim U-17 team as the successor to Xaver Zembrod. On 15 June 2015, it was announced that Rasiejewski would become head of the sports and youth development department at
VfL Bochum, succeeding Alexander Richter, who would focus more on squad management and the certification of the youth development center. In Bochum, he once again worked together with sports director
Christian Hochstätter. From January 2016, Rasiejewski was part of the Bochum professional team's coaching team as an additional assistant coach. He did so for just over a year before he was no longer part of the coaching staff and continued in his role as the head of the youth sector; a role he had been doing on the side. In the summer of 2017, he became coach of the club's U19 team, while still fulfilling his role as head of the club's academy. However, that didn't last long. In October 2017, Rasiejewski became interim head coach of
VfL Bochum, succeeding
Ismail Atalan, and was finally given a contract as head coach until June 30, 2019 on December 8, 2017. After four consecutive defeats, Rasiejewski was relieved of his duties on February 7, 2018, as was Chief Sports Officer Hochstätter. Rasiejewski returned to Hoffenheim in June 2021 and took over as head of the
Hoffenheim youth academy as the successor to
Marcus Mann. He was released from his duties at Hoffenheim in December 2023. ==Career statistics==