Two part interview process, technical and behavioral. Technical questions had to do with thermodynamics, fluids, heat transfer, and data center cooling designs. The behavioral part was your typical questions “what happened when you encountered a certain situation?”. Overall, they weren’t difficult questions. The cool part about their hiring process is that they don’t keep you waiting to see if you got the job. They’ll get back to you in 2 days after the interview. I rate this a difficult interview process because after doing multiple interviews for internships with other companies this is the second company that gave me a technical portion. The other company was Google, their questions were a lot harder for a similar position.