I applied online. The process took 2 months. I interviewed at Proofpoint
Interview
Recruiter phone screen, followed by interview with hiring manager, and then followed by interviews with 2 other data scientists. Process took longer as it was nearing the end of the year and people were on leave.
Standard Interview that asked both behavior and technical questions. Interviewers were both kind and attentive. Overall had a decently positive experience but did not receive an offer. I would recommend as they seem like a fantastic company though