Sept. 2014 - Now

 Professor and Director,
Center of Excellence in Energy Conversion(CEEC),
Sharif University of Technology, Tehran, Iran

 Nov. 2013 - Mar. 2016

 Professor and Dean of Centre of Languages and Linguistics,
Sharif University of Technology, Tehran, Iran

 Sept. 2012 - Sept. 2014

 Professor and Vice President of Academic Affairs,
Sharif University of Technology, Tehran, Iran

 Apr. 2008 - Sept. 2011

 Professor and Chair,
School of Mechanical Engineering,
Sharif University of Technology, Tehran, Iran

 Dec. 2003 - Apr. 2008

 Associate professor,
School of Mechanical Engineering,
Sharif University of Technology, Tehran, Iran

 Jul. 2007 - Sept. 2009

 Vice–Chairman of Graduate Studies,
School of Mechanical Engineering,
Sharif University of Technology, Tehran, Iran

 June 2001 - June 2003, and June 2012 - Now

 Director of Center of Excellence in Energy Conversion,
Sharif University of Technology, Tehran, Iran

 Sept. 1999 - June 2003

 Director of Thermo-Fluid Group,
School of Mechanical Engineering,
Sharif University of Technology, Tehran, Iran

 Sept. 1994 - Now

 Coordinator of Heat Transfer and Thermodynamic Labs,
School of Mechanical Engineering,
Sharif University of Technology, Iran