Arystanbek began his career in 1984 as a philharmonic artist in the
Jambyl Kazakh State Philharmonic. In 1991, he became a chief specialist in the
Ministry of Culture where he served as an assistant from 1993. In 1994, Arystanbek became the director of the Gulder Sate Ensemble. From 1997 to 2001, he served as the head of the Presidential Orchestra before becoming the General Director of the Directorate of Republican and International Cultural Programs. He served the post before being appointed on 6 August 2014 as
Minister of Culture and Sports. During his tenure, he was criticized on several occasions such as agreeing with President
Nursultan Nazarbayev for saying how Kazakhs are living in their best times of the 550-year history and how it was his work that the nation gained its independence in 1991. He was also criticized for inappropriate remarks about movies "shaming Kazakhstan" and "Kyrgyz washing toilets". In 2016, several women accused Muhamediuly of sexual harassment. On 17 June 2019, by the Decree of the President of Kazakhstan, Arystanbek was relieved from his post after serving for almost five years. Since 10 July 2019, he has been the director of the
National Museum of the Republic of Kazakhstan in
Nur-Sultan. On May 16, 2022, the
Anti-Corruption Service reported that Arystanbek was arrested on suspicion of embezzlement of budget funds. According to the agency, a pre-trial investigation is being conducted against officials of the RSE
National Museum of the Republic of Kazakhstan of the Ministry of Culture and Sports on the grounds of embezzlement of budget funds. In the same month, the official attempted suicide while he was in a temporary detention facility. == Personal life ==