A Mechanical Engineer researches, designs, develops, manufactures, and tests mechanical and thermal devices, such as machines, engines, and systems. Key duties involve analyzing problems, creating technical designs using computer-aided design (CAD) software, building and testing prototypes, overseeing manufacturing, and inspecting equipment for functionality and safety. They apply principles of math, physics, and engineering to solve problems and ensure efficient and reliable operation of products and systems across various industries, including manufacturing, energy, automotive, and aerospace.