Many steps for this long journey interview. First was a telephone interview by oversea engineer located at US, asked me about my work experience presented in the resume and some questions about system level like cache mechanisms. Second was a series of face to face interviews with local engineers, first pair focused on my work experience and embedded software skills, second pair about my network protocols skills. At last they asked my to join the interview with local CTO and I refused since I had accepted another offer. All of these last about one month. However, the people I met there were very nice.