Everyone I interacted with was very friendly; the interviews tested a variety of mechanical engineering skills from your run of the mill beam bending problems to very specific product design terminology. It did not become evident until the final interview that they were looking for a high level of experience with materials and small-scale manufacturing.

i had my interview today and was asked the same question. also similarly, the interviewer had no sense of humor. it was not a enjoyable experience because i think i gave like 3-4 different ways of making a cantilever, but i was asked "what else?" like 10 times for the cantilever problem alone. i also have 7 years of work experience, but there was 0 question asked about it.