JT4 provides engineering and technical support to multiple western test ranges for the U.S. Air Force, Space Force, and Navy under the Joint Range Technical Services Contract (J-Tech II). The company operates critical range infrastructure across California, Nevada, Utah, and Colorado, supporting weapon system testing, tactics development, and warfighter training. JT4 is a wholly owned subsidiary of Amentum and serves as the premier provider of joint test, tactics, training, and technology support to the Department of Defense.

Products & services

Joint Range Technical Services Contract (J-Tech II) Support Engineering and technical support services for multiple western test and training ranges used by the U.S. Air Force, Space Force, and Navy.
Joint Simulation Environment (JSE) Operation and Maintenance Operation and maintenance of virtual test and training facilities that simulate multi-domain battlespaces for military aircraft and systems testing.
Flight Test Engineering Services Technical support for planning, scheduling, and executing flight tests of military aircraft, including test safety and data collection.
Systems Engineering Services Development and management of system requirements, operational concepts, and test plans for military aerospace and defense projects.
Instrumentation Operations Engineering Installation, modification, testing, and maintenance of airborne test instrumentation, telemetry, and ground support equipment for military testing.
Missile System Engineering Support Technical advisory and engineering services for missile system development, maintenance, and testing on military aircraft.

Leadership

Dan Wild Senior Vice President, Treasurer & Chief Financial Officer

Seniority mix

Entry & junior 6%
Mid-level 41%
Senior 41%
Lead & principal 12%
Manager & above 0%

Based on 17 open roles

Where they hire

Edwards AFB, CA 65%
Las Vegas, NV 15%
Colorado Springs, CO 10%
North Las Vegas, NV 5%
Salt Lake City, UT 5%

Based on 20 roles with a listed city

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