Generally, it has 2 interviews in total, one is with the hiring manager, and another one is with the human resource staff.
The interview with the manager has many professional questions, and you have to read the job description very carefully before interview, and try to extract the transferrable skills from your past experiences that fit the keywords of JD.
The interview with HR is more about the behaviour questions, more general and will talk about the salary and time to get to work.