Quest Defense Systems & Solutions Inc.

Quest Defense Systems & Solutions Inc. is a U.S.-based engineering services provider to the aerospace and defense industries. The company serves defense contractors, aerospace OEMs and the U.S. Department of Defense, delivering engineering work across air, land, sea and space platforms. Its services span the full development cycle, from design and development through testing and validation of aerospace and defense systems. It is headquartered in Cincinnati, Ohio, and operates as a subsidiary of the Quest Global group.

Its technical work covers mechanical engineering, embedded systems, software development, systems engineering, and safety- and mission-critical systems. A significant part of the offering concerns certification: the company supports compliance with DO-178C and ARP4754A, the standards governing software and systems development in airworthiness programmes. Engagements extend across the defense industrial base and commercial aerospace.

For engineers, the organisation's focus is on mission-critical challenges for major defense contractors and aerospace OEMs, with roles drawn from the disciplines above. Its work is delivered by a team of engineers concentrated in the United States.