Home About Us Capabilities Contracts Employment Contact Us 1 2 3 4 About Us MANDEX, Inc., headquartered in Fairfax, VA, is a Service Disabled Veteran Owned qualified small business with a long term history, since 1974, of providing engineering and information technology services to Department of Defense and commercial clients. Read More About Us » Contact Us Fairfax, VA - Headquarters 12500 Fair Lakes Circle, Suite 125 Fairfax, VA 22033 Tel: (703) 227-0900 Fax: (703) 227-0910 Branch Offices » Site Map | Contact Us | Employee Login | Webmail ©2021 MANDEX · All Rights Reserved