Micrel Medical Devices interview questions

Firstly a phone call with HR which was really polite and with good guidance.Afterwards an interview with 4-5 senior engineers which included various programming tests and questions. I didn't have the best experience because they tried to prove that i am a junior (although i have 3 y experience as a Software Engineer).Also the interviewers were not helpful at all,they didn't talk about their products and what they work on. Overall a really negative experience