- Designing: Drawing up plans for new designs, such as buildings, roller coasters, space vehicles, and movie special effects
- Building: Overseeing construction projects
- Testing: Running quality-control tests on new products
- Analyzing: Analyzing existing processes and systems to improve them
- Developing technical data: Developing technical data for materials, dimensions, quantities, and costs
- Providing guidance: Providing guidance for the planning, engineering design, and maintenance of projects
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