- Alfmeier Corp Engineering Div
- Alfmeier Corp Engineering Div
- AST Engineering Inc
- AST Engineering Inc
- Efficient Engineering Co Inc
- Isotech Engineering
- Isotech Engineering
- Kelly Engineering Resources
- Kelly Engineering Resources
- Kelly Engineering Search
- Kelly Engineering Search
- Klep Corp
- Klep Corp
- Ove Arup & Partners Detroit
- Ove Arup & Partners Detroit
- Tsubaki Detroit Engineering
- Tsubaki Detroit Engineering
- Vest
- Vest
