I applied online. I interviewed at Proofpoint (Sunnyvale, CA) in Sep 2020
Interview
I was schedules for a virtual onsite interview (4-5 rounds). However, after 2 rounds, I get a call from recruiter informing that all other rounds have been cancelled. Overall, dont waste your time here. The interviewers are rude. They lack a professional process. The coding questions was easy however they keep trying to get your moral down. The JD said the following ( I guess they really mean it) :
Low ego and someone who puts the team and the organization first. You have strong opinions that are loosely held.
Even if you get a offer, think before you join the team.
Interview questions [1]
Question 1
Non Disclosure agreement (NDA)
Data structures / algorithms / security protocols
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.