first interview: it was a general HR interview about your research experience and what their company does. Then followed by several technical questions about Kwh... case study interview: They sent you a case study material when the interview started and you had an hour to prepare a 30min presentation. It was so hard since I had to assume basically all the numbers and I didn't know much about hydrogen compressors. The interviewer also didn't guide me through as well and she didn't have any comments for me.