Hour-long first interview. Depending on your potential future boss, you'll be asked different questions. Mine looked through my resume, and told me to walk through all the different job experiences I've listed down on it. That was especially good for me since I was only a fresh graduate and didn't have much working experience and that allowed me to explain in detail my project and committee experiences in school, which could never be best explained in a few sentences in a resume. Again, depending on the job you applied for, be prepared for case studies relating to the job. You might be asked a few basic questions regarding the case studies. A right answer isn't needed, since the technical information can be taught and trained anyway, but a reasonable answer - and your logical explanation as to how you came up with this answer - is expected.