Products
System Design Interview Mock.
A real interview, run by people who have sat on the other side of the table at FAANG-scale companies — then an honest read on how it went and what to fix before the one that counts.
How it runs
Three sessions, in order.
Start with the free consultation. If it's a fit, book the interview and the feedback session together — the feedback lands best within a day or two of the interview, while you still remember your reasoning.
01
Consultation
What you're preparing for, which company and level, and where you think you're weakest. We pick the problem shape you'd most benefit from and tell you straight whether a mock is worth your time yet.
Book02
The interview
Run like the real thing, on a shared diagram, at real pace. Your interviewer stays in role — they'll push on scale, failure modes, and the tradeoff you glossed over, and they won't rescue you.
Book03
Feedback
Out of role, direct: what a real interviewer would have written down, where the signal dropped, and the two or three things to change before your next loop.
BookWhat you get
Signal, not encouragement.
A real interviewer's read
Scored against what interviewers actually write down — requirements, tradeoffs, depth under pressure — not a generic rubric off a blog.
The pressure, on purpose
The point is to find where you fall apart while it's still free to find out. A comfortable mock teaches you nothing.
Two or three things to fix
Not a list of twenty. The handful that would most change the outcome, in the order worth working on them.
Book
Start with the free consultation.
Fifteen minutes, no charge, and no obligation to book anything after it. If you do go ahead, the interview and feedback are $50 together while the early adopter price lasts.
Opens our Calendly in a new tab. Pick a time that works and you'll get a calendar invite straight away — or email info@experimental-hq.com if none of the times fit.
Questions first?
Tell us what you're interviewing for and we'll tell you whether this is the right thing to spend your prep time on.