3 rounds of technical rounds. Start from the basics and go deep into the subject. Specially at the MTS-4 and staff engineers role, applicant must be aware of the architecture of the devices the candidate have worked on. Once the technical rounds are cleared, managers round and optional HR round.

It was worst interview experience I have ever had. Interview has 7 rounds spanning over 3 months. All rounds were in US time zone. After last round there was no communication for 3 weeks. I called for enquiry and was informed that they don't need a staff engineer now instead they need a lower rank role. Very unprofessional company. I will suggest never waste time by appearing interview for this unprofessional organisation