I was a student when applying for this co-op position. I was recommended to the company by a fellow student working for them at the time. I had applied on the school job website, was contacted by someone in HR and set up a time for 2 phone interviews. I was contacted by 2 senior manufacturing engineers. I spoke with them back to back. The interview was friendly and not intimidating. They asked both technical and behavioral questions. I heard back from them within a week and was offered the position.