There is absolutely no structure to interviews. Typically you get interview call if you have internal referral. From there on its purely general questions on what you worked on in your past projects. Questions are purely based on what is written on your resume. You will be interviewed by hiring manager and some team members. HR interviews are vague too. Tailor your resume to the position and unless you are 110% fit for the job there will be more internal referrals that will beat you out.