It was divided in to three parts. First I had a general interview with the design department manager. Just going over the resume and asking you about it. He also told me more about the company and what they do and what would my part would be. Second part was a logistic test to see you ability to solve problems. It's not something you can get prepared for. you just need to be able to think on the spot. Third part was a CAD test. I had to create some pipe related 2D drawings on AutoCAD and 3D assembly on Inventor.