In most cases, employers start by introducing the company and what they expect from the new employee. They will then ask applicants to set out their reasons for wanting the job and to describe their knowledge and skills. The employer can also ask applicants to take a test or fill out forms. At the end of the interview, the employer can give candidates the opportunity to ask questions.
The atmosphere is formal. Remember this, and take care with your choice of words. Most of the interview time is dedicated to professional topics. The employer is not usually interested in personal aspects.