Duo Security Sr. Software Engineer interview questions

Recruiter was amazing in coordination and keeping the candidate in the loop. They were transparent and provided whatever "excuse" the HM has given them. I had 5 rounds - 1 code review, 1 coding and 1 design, 1 behavioral with engineering leadership and another with Product Manager and Designer followed by 30 minutes of HM wrap up. All the rounds have behavioral question follow ups to your tech answers and everyone pretends to be culturally collaborative. Overall , I did well and HM said great things in the wrap up round. The next day was the day of results and they decided to pass saying that I take initiatives to improve quality which can disrupt their cultural ethos. How on earth can someone provide this lame feedback. Anyways, I moved on and decided not to interview anywhere which had "woke" red flags of fake culture fit

Coding challenges, system design, behavioral questions. It had a good amount of depth without being overly difficult. No trickery, gotchas etc. I got clear feedback from each session. For a large company (Cisco) the process moved quickly.