Senior Attack Engineer applicants have rated the interview process at Horizon3.ai with 4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 75% positive. This is according to Glassdoor user ratings.
Common stages of the interview process at Horizon3.ai as a Senior Attack Engineer according to 1 Glassdoor interviews include:
One on one interview: 25%
Group panel interview: 25%
Skills test: 25%
Phone interview: 25%
Here are the most commonly searched roles for interview reports -
I applied online. I interviewed at Horizon3.ai (San Francisco, CA) in Oct 2024
Interview
4 step interview
1st non-technical
2nd technical, had to hack into one of their machines and write it up step by step. They cared a lot about the write-up part of it
3rd manager
4 other manager
I applied through an employee referral. I interviewed at Horizon3.ai in Apr 2026
Interview
Recruiter screen → Hiring manager interview → Technical round 1 (60 min live coding): if you know OOP, it'll be mildly challenging, but you'll be fine—no FAANG-like Leetcode BS needed (but definitely helps to have firm grasp of DSA) → Technical round 2 (60 min grilling over vuln research methodology/offsec/exploitation/computing internals): this is hard, and intentionally so. They go deep. A mix of extremely specific questions with only one right answer and broadly open-ended questions. → Decision