A thermodynamics engineer is a type of aerospace engineer whose duties involve constructing, designing, and testing missiles, aircraft, and spacecraft. As a thermodynamics engineer, you research materials and use computer simulations to test equipment. Problem-solving, computer, and creativity skills are vital for this career. Qualifications begin with a bachelor’s degree which qualifies you to pursue graduate-level mechanical engineering or certificate programs. Earning a master’s degree can pave the way to job advancement in this field. Employers typically prefer five years of relevant job experience. Some companies may require you to have certain clearance levels.