there is no interview if your skills matches with their clients requirement. you dont have to prepare specifically for an interview if you have good work experience. they only hire experienced professionals.

Three interviews were carried out within two weeks with a quick followup client interview. The interviews were smooth, professional, and to the point. I met an engineer who was 50 years old, with whom I had a technical interview. It was one of the best interviews in my entire professional career so far.