CEO and President
H.M. “Hash” Hashemian, Ph.D.
President/CEO
He is a member of the European Nuclear Society and a Fellow of the Institute of Electrical and Electronics Engineers, the International Society of Automation, and the American Nuclear Society. Within ANS, Hashemian has served in a number of roles across various conferences and committees, including as vice chair of the Development Committee; chair of the Honors and Awards Committee; and chair of the Human Factors, Instrumentation, and Control Division.
He is also an active nuclear advocate in Tennessee politics, having served on both the Tennessee Nuclear Energy Advisory Council and the state’s Energy Policy Council. At the national level, he served as a member of the Civil Nuclear Trade Advisory Committee.
Corporate Managers
Darrell Mitchell, BSc
Technical Services Manager
Leads technical sales, manages client accounts, and performs contractual negotiations.
Joined AMS: August 1989
Mehrad Hashemian, MSc
Field Testing Services Manager
Runs AMS’ Spain and California operations in providing testing services to nuclear plants and assists in marketing and business development.
Joined AMS: June 1982
Operating Managers
Brent Shumaker
Chief Operating Officer
Technical and operational assistant to CEO.
Joined AMS: November 2001
Ryan O'Hagan
Chief Marketing Officer
Conducts business development, marketing, sales, and business operations.
Joined AMS: May 2009
Greg Morton, MSc
Chief Technical Officer
Manages all technical development and drives technology innovation.
Joined AMS: February 1995
Chad Kiger, Ph.D.
Vice President – EMC Services
Runs EMC team providing laboratory and field testing services and assists with business development.
Joined AMS: February 2006
Sam Caylor, MSc
Vice President
Systems Engineering
Systems Engineering
Manages AMS’ software development team and helps with new product development.
Joined AMS: July 2008
Casey Sexton, BSEE
Vice President
Cable Testing & Technology
Cable Testing & Technology
Manages AMS cable testing team performing laboratory and field measurements. Responsible for cable testing technology development.
Joined AMS: January 1992
Alex Hashemian
Vice President
Chief Engineer











