There were 3 different interviews. One was with HR to go over basics and benefits. The second was about personality and values to make sure you fit the team culture. The third was a doozy of a tech interview. They had you gone over a basic P&ID and some equipment to see what kind of design considerations you would use for several different types of process equipment. Not super difficult for someone trained in the field, but there wasn't a ton of feedback and there will always be design considerations that you miss due to the stress of the interview and the multitude of options.

this was for process engineer - contract manufacturing (medical device) role. applied online through website. one 30 min phone screen interview with the hiring manager. questions from my experience and resume.