Convergent Science CFD Applications Engineer interview questions

First, the phone interview with CFD insight questions, I thought they will ask me about my CV and qualifications but instead, he had a list of CFD questions. Once you clear that, you are invited to the office. You give multiple interviews, asked to give a presentation to the office, connect to the main office in the USA via skype and he ask grilling questions, then the office employees will ask you questions. In the final interview stage, you are given a CFD problem they encounter with clients, ask you about your salary expectations, how long you planning to work with the company, etc