Two thirty minute phone interviews, then they flew me to Pittsburgh for a day of final round interviews (called "Super Day" if I recall correctly). This final round consisted of maybe five or six in-person conversations--mostly behavioral but one case study. And most of the behavioral interviews were just me explaining my resume to the interviewer.

After submitting CV, credentials and cover letter you have to complete online tests before receiving video interview link and then progress to the final stage interview. Whole process took about 3 weeks from role closing time.