mockrr

AI-Powered Interview Prep That Thinks Like a FAANG Engineer

Master technical interviews with a guided, six-step problem-solving system. No fluff. No question banks. Just focused feedback from AI that helps you think like a top-tier engineer.

mockrr.app/problems/find-missing-number

Problem: Find Missing Number

Given an array nums containing n distinct numbers in the range [0, n], return the only number in the range that is missing from the array.

Step 1: Understand the Problem
Step 2: Clarify
Record your understanding...

Why Technical Interviews Are Broken

Current interview prep platforms focus on memorization instead of teaching you how to think.

The Problem

  • Candidates waste hours studying irrelevant questions
  • Memorizing patterns instead of understanding concepts
  • No meaningful feedback on your approach
  • Existing platforms are bloated and impersonal
  • No clear path to mastering interview skills

Our Solution

  • Structured 6-step interview process developed by a FAANG engineer
  • Interactive AI coach that gives targeted feedback
  • Voice or text input to simulate real interview dynamics
  • On-demand questions with focus on approach, not memorization
  • Personalized insights that improve your skills over time

A Complete System for Technical Interview Mastery

Our AI-powered platform trains you to think like a top-tier engineer, not just memorize solutions.

Guided 6-Step Workflow

Structured approach covering understanding, clarifying, planning, implementing, testing, and optimizing solutions.

Voice & Text Input

Practice articulating your thought process verbally as you would in a real interview or type your responses.

Problem Understanding

Read and listen to problems, then articulate them in your own words to ensure deep comprehension.

Interactive Clarification

Ask questions about the problem and receive AI-powered responses, just like with a real interviewer.

Complexity Analysis

Get feedback on your time and space complexity estimates to improve algorithmic thinking.

Real-Time Feedback

Receive immediate insights on your approach, code quality, and problem-solving strategies.

Timed Practice

Track your speed with an integrated timer that measures performance across each interview step.

Performance Reports

Get comprehensive summaries of your performance with actionable improvement suggestions.

Success Stories from (Eventually) Real Engineers

See how our platform has helped engineers land jobs at top tech companies.

OMG! I used to panic and forget my own name during interviews! But now I just follow the steps and BOOM - I passed my tech interview while eating a burrito. My dog was super impressed!

VB

Vara Bull

Code Wrangler, Giggle

I literally spoke my algorithm solutions into existence! It was like coding karaoke. I was so confident I accidentally pitched my side hustle to the interviewer. Got the job AND an investor!

DL

Dev Loop

Keyboard Warrior, Amazonian

Big O? More like Big WOW! Now I can analyze complexity while doing TikTok dances. My last interviewer had to take notes from ME. I've peaked, folks!

FA

Forrie Ach

Bit Flipper, Macrosoft

This six-step process is like training wheels but for your brain! I went from "what's a recursion?" to solving problems in my sleep. Literally. My husband recorded me debugging in my dreams!

AP

Arrey Parse

Bug Creator, FaceNovel