Mechanical and manufacturing engineers research, design, build, test, maintain and improve all manner of things, from power plants, renewable energy systems and electrical generators, to robots computer systems and aircraft engines and cars. If it is a machine, it was an engineer that made it.
In recent times, mechanical and manufacturing engineers have had to adapt to the changing needs of the technology era. Now they design bionic limbs and prosthetic joints, develop high performance composite materials, work on more flexible manufacturing processes and much more. As technology demands it, a mechanical and manufacturing engineer responds accordingly with an ingenious invention or more efficient process.