I applied through a recruiter. The process took 2 weeks. I interviewed at Calpine (San Diego, CA) in Sep 2020
Interview
I applied to this via Proven Recruiting, who I felt was very professional and followed up very well through the whole process.
This was actually for both the Billing Specialist and Analyst roles.
Overall, I got the phone screen from the recruiter, and spoke with the Hiring Manager
Interview questions [1]
Question 1
The Hiring Manager just asked about my previous experiences, and why I was interested in Calpine and the position, then clarified the job postings.
I believe she also asked some standard interview and behavioral questions.