• Visiting Professor, Department of Civil and Environmental Engineering (DFCE), The United States Air Force Academy, 2021-Present, Colorado Springs, CO
  
• Associate Professor, Civil Engineering Department, University of Texas at El Paso (UTEP),  August 2018-Present, El Paso, Texas
  
• Assistant Professor, Civil Engineering Department, University of Texas at El Paso (UTEP),  November 2012-August 2018, El Paso, Texas

• Senior Research Engineer, Applied Research Associates, Inc. (ARA), December 2011- October 2012, Atlanta, GA.

• Senior Research Engineer, Applied Research Associates, Inc. (ARA),November 2009- December 2011, Panama City, Florida.

• Assistant Transportation Researcher, August 2009 – November 2009, Texas Transportation Institute (TTI), Texas A&M University, College Station, Texas

• Graduate Research Assistant, January 2004 – August 2009, Texas A&M University, College Station, Texas

• Transportation Engineer, 1998-2003, Shabdar Engineering Consultants, Tehran, Iran.

• Assistant Site Engineer for Highway Construction, 1994-1998 Disman Saz Co., Tehran, Iran.