Flight Test Engineers are specialized professionals who ensure that aircraft and spacecraft perform safely and effectively during testing. They design and conduct tests to evaluate the performance, stability, and safety of these vehicles. Their work involves analyzing data collected during test flights and making recommendations for improvements. These engineers collaborate closely with other experts, including aerospace engineers, pilots, and mechanical engineers, to develop testing protocols. They also help troubleshoot any issues that arise during tests, ensuring that all systems function as intended before the aircraft or spacecraft is approved for operational use.