I applied through Linkedin and got a call on the same day from HR and was screened by the HR. Then HR scheduled an interview. Each phone interview was of 30 mns duration. 1st Phone Interview - Went well. Basically they were looking for travel frequency and questions were mostly related to job description. Situational questions were asked. I cleared the 1st round and was scheduled 2nd phone interview. 2nd Phone interview - This was a technical round. It was related to my CV. I cleared the round. 3rd Phone interview - This was a behavioural round and was aked question on situations and also in regard to the travel. I cleared this round as well 4th Phone interview - This was based on management and leadership. This interview was conducted by an engineer from California. I am still not sure what they were looking for after so many rounds of phone interviews.