A Wind Tunnel Test Engineer is responsible for planning, conducting, and analyzing aerodynamic tests using wind tunnels to evaluate the performance of aircraft, vehicles, or other objects. They design test setups, install instrumentation, and collect data on airflow, forces, and pressures. Their work helps improve designs by identifying areas where efficiency, stability, or safety can be enhanced. Engineers in this role collaborate with designers, researchers, and other engineers to interpret results and refine prototypes.