NeetCode 150 · Interview Simulator
LeetCode didn't lie to you. It just prepared you for the wrong thing. Solving problems alone is not the same as performing under pressure, in front of someone, in real time.
02 — The Confession
You blanked. Not because you didn't know — because no one was watching you before.
Solving at your desk at midnight is nothing like explaining your thinking out loud to a senior engineer judging every word. That gap is real. Nobody warns you about it.
You got the optimal solution. They still said no hire.
Because you couldn't explain your complexity. Because you jumped to code without walking through your approach. Because you went silent for 4 minutes. All of that is scored. None of it is on LeetCode.
Mock interviews with friends don't count. They're too nice.
Your friend won't probe a weak approach. Won't ask "what's the time complexity of that?" three times. Won't write in a debrief that your communication was unclear. A real interviewer will — and does.
You have no idea what you actually look like in an interview.
You've never seen your own scorecard. Never had a senior engineer break down exactly what you said, what it signaled, and where you lost the hire. You're flying blind and calling it preparation.
03 — The Reframe
Every candidate who walks into a Google loop has solved the same 150 problems you have. The ones who get offers practiced the thing that actually separates them: performing under structured evaluation. Getting scored. Doing it again.
Explaining. Adapting. Communicating under pressure.
Problem understanding
Did you clarify constraints before diving in?
Approach quality
Did you walk through trade-offs before committing?
Code correctness
Does it actually work — for the edge cases too?
Complexity awareness
Can you defend the time and space, out loud?
Communication
Did your thinking land — or did the room go quiet?
04 — How It Works
The AI interviewer asks you to walk through your approach out loud. It probes. It pushes back. It asks what happens when the input is empty, when n is 10⁶, when there are duplicates. You don't get to hide behind your editor yet.
Monaco editor, your language. No autocomplete hints, no solution tab. Mid-session you can ask the interviewer a clarifying question — it answers the way a real interviewer would: carefully, without giving anything away.
A structured scorecard — five dimensions, 1–5 each, evidence pulled from your exact words and code. Strengths. Gaps. The two sentences a hiring manager would have written about you. Then the optimal approach, fully explained.
05 — The Scorecard
“Candidate demonstrated strong problem decomposition but rushed to code without fully articulating the O(n) vs O(n log n) tradeoff. Communication deteriorated under follow-up pressure. Lean hire — recommend a second round focused on complexity articulation.”
06 — The Outcome
Across candidates after 10+ sessions
Candidates who debrief vs those who don't
Every NeetCode 150 problem. No gaps.
No account needed. Pick a problem. Start talking.
Start your first session