Typically a series of three 1:1 interviews. 6 - 8 behavioral based questions per interview and sometimes a simulation exercise. Be prepared to have several experiences or achievements to relate to the questions. Project management experience seems to be highly valued as are technical skills. Occasionally you'll get "weakness" questions like "describe a time when you missed a deadline," so be prepared to show how you overcame those types of situations. Most interviewers are friendly, but definitely professional.