I applied online. The process took 4 weeks. I interviewed at Proofpoint (Sunnyvale, CA) in Jan 2018
Interview
Phone Interview: you’ll have 1 phone interview with the hiring manager to talk about cultural fit, and been given a great understanding on the position detail through hiring manager.
If you pass phone interview, you’ll move to the onsite interviews. You’re likely to have 4-6 interviews during the day.
The questions you’ll be asked during onsite interviews will include both technical questions and behavioral questions. There will one round for system design question.
Took nearly 2 months, 1 call with recruiter, 1 call with hiring manager (slightly technical), 1 call with staff engineer and 2 seniors, 1 more in person interview with 2 senior AI engineers.
I applied online. I interviewed at Proofpoint (Fort Collins, CO) in Apr 2026
Interview
Did a two hour coding project which was cool, for the initial job screening. It involved creating a app in C# and seemed to go pretty well. However the ghosted me after doing it, followed up on three separate occasions no response.
I applied online. The process took 1 week. I interviewed at Proofpoint (Toronto, ON) in Jun 2025
Interview
I had an interview with a recruiter. It was a typical HR interview and it lasted about 30 minutes. Unfortunately, I was ghosted even after I sent a follow-up email.