I was contacted by a TriNet recruiter and participated in a 20-30 minute phone interview. This was followed by 3 separate phone interviews, 1 with an HR Director and 2 with other HR Consultants. I then moved to the next phase which included in-person interviews in Dallas, TX with 2 HR Directors and 2 HR Consultant's. The final phase was a phone interview with the VPHR. All in all it took ~4 weeks to complete the interview process and I was given an offer to start in 2 weeks.
The vetting process was intense, but they want the best, and I was pleased with the quality of their employee hires overall.