I applied through a recruiter. I interviewed at Halcyon (Chicago, IL) in Dec 2025
Interview
They rescheduled me 2x and didn’t really give me an opportunity when it came to the interview with Sky.
He only asked 2 questions then he opened the floor to my questions. The interview lasted less than 15 minutes. Overall just not a great experience. I feel as if I was treated poorly during the process.
Interview questions [1]
Question 1
Why Halycon? (Probably the most important question). I assume if they take you seriously you’ll be asked more.
I applied through a recruiter. The process took 3 weeks. I interviewed at Halcyon in Apr 2025
Interview
I spoke with two leaders in two separate interviews, under 1 hour each. Then, I had technical interview, focused on Windows kernel and technical experience, with two folks in product management level.
The second leader must be a comedian. He explained that the company strives to avoid hiring jerks. After my third interview, the company and recruiter ghosted me. This is pretty funny, but not worth 3+ hours of time to get to the punchline that they do hire jerks, apparently.
Interview questions [1]
Question 1
They asked about various Windows internals concepts: IRQLs, dispatch tables, filter drivers, mutex vs spinlock, etc.
Good experience with interview it has total 3 three rounds , two tech and one hr. it takes total of one week for the whole process to complete and interview is through video call