Senior Engineer, uses math and science to solve different technical problems. Their main duties include developing new products for companies or individuals to use, providing maintenance to current products to enhance use and designing new machines to improve an organization's efficiencies.

The primary duties and responsibilities of the Lead Designer include research and analysis, overseeing a variety of design projects such as interactive design, and gauging the performance of designing strategies implemented. ... They can also be requested to lead the design of new products.

A Custodian, or Caretaker, is responsible for maintaining the cleanliness of a building and the surrounding grounds. Their duties include vacuuming floors, sanitizing restroom facilities and collecting trash to ensure the building's occupants have a clean space.