1969–1974 – Student at Tashkent State University
1974–1979 – Lecturer, aspirant(phd-student) and Senior Lecturer at Tashkent State University
1979–1986 – Senior Researcher at the V.I. Romanovsky Institute of Mathematics, Academy of Sciences of the Republic of Uzbekistan
1986–1992 – Deputy Director of the V.I. Romanovsky Institute of Mathematics, Academy of Sciences of the Republic of Uzbekistan
1992–1994 – Director of the V.I. Romanovsky Institute of Mathematics, Academy of Sciences of the Republic of Uzbekistan
1994–1996 – Head of Department, Cabinet of Ministers of the Republic of Uzbekistan
1994–2000 – Member of the Presidium of the Academy of Sciences of the Republic of Uzbekistan
1996–1997 – Chief Consultant to the Executive Office of the President of the Republic of Uzbekistan
1997–2003 – Chairman of the Higher Attestation Commission under the Cabinet of Ministers of the Republic of Uzbekistan
2003–2004 – Deputy Minister of Higher and Secondary Specialized Education of the Republic of Uzbekistan
2004–2007 – Director of the V.I. Romanovsky Institute of Mathematics, Academy of Sciences of the Republic of Uzbekistan
2007–2012 – Director of the Institute of Mathematics and Information Technologies, Academy of Sciences of the Republic of Uzbekistan
2012–2017 – Director of the Institute of Mathematics under the National University of Uzbekistan
2017–present – Director of the V.I. Romanovsky Institute of Mathematics, Academy of Sciences of the Republic of Uzbekistan
2024–present – President of the Academy of Sciences of the Republic of Uzbekistan.
Professor
Doctor of Sciences, DSc 
Algebra and functional analysis 
