coach of Mash'al Mubarek, his last player station, where he retired as player. In 2006, he became co-trainer to Rauf Inileev of the Uzbekistan national and Uzbekistan Olympic football team. In December 2007 Kasymov was appointed as coach of Bunyodkor. In 2008, he managed to bring his club to the semi-final of the AFC Champions League in the club's first appearance in this tournament, which is considered to be the best international performance of Bunyodkor's history actually. Bunyodkor won in quarterfinal of tournament in two leg matches Saipa. On 25 September 2008 Brazilian legend, Zico was appointed as the new coach of Bunyodkor, Kasimov remained adviser-coach at club side. On 16 September 2008, he became head coach of the Uzbekistan national football team for the qualification stage of the 2010 World cup. On 6 April 2010 he was replaced by Vadim Abramov as national team trainer. After Luiz Felipe Scolari left Bunyodkor in May 2010, Qosimov was named coach of the club again. The authoritative football news website Goal.com named Qosimov as Best Coach of Month (May 2012) for the successful play of Bunyodkor in the AFC Champions League in that month. On 4 June 2012, Qosimov was appointed as the new head coach of the Uzbekistan national football team for the second time after Vadim Abramov resigned from his post (lost 0-1 against Iran at home). On 3 January 2013, IFFHS published its list of The World's best National Coach 2012 and Qosimov ranked 14th in the list among 17 coaches with 6 points, followed by Oleg Blokhin and the current coach of Switzerland, Ottmar Hitzfeld. In monthly survey Coach of the Month by Football Federation over the 2012 Kasymov was named best coach 6 times. UFF named Kasymov Coach of the Year on 21 January 2013. Qosimov resigned his post as Bunyodkor's head coach on 5 April 2014 to concentrate on his work in the national team. He also led the U-23 national team for the 2014 Asian Games in Incheon. On 22 December 2018 Qosimov was appointed as head coach of AGMK to prepare team for upcoming 2019 Uzbekistan Super League and qualification matches of 2019 AFC Champions League. On 12 February 2019 in 2nd preliminary round of 2019 AFC Champions League AGMK won Istiklol by 4:0. But in next play-off round one leg match on 19 February 2019 lost to Al-Nassr 0:4 und failed to qualify