Google Interview Practice

Crack the Google software engineer interview

Practice Google's coding, system design, and Googleyness rounds with a voice AI that pushes back just like a real Googler would.

Google System Design

Interviewer

Design a URL shortening service like bit.ly that handles 1 billion requests per day.

You

I'd start by separating the read and write paths. For writes we need a unique ID generator — I'm thinking base62 encoding...

Interviewer

Good. How would you handle hash collisions at that scale, and where would you store the mappings?

Listening...

How it works

From signup to your first practice session in under two minutes.

Behavioral, technical, case, or role-specific — choose what you're preparing for.

Speak naturally. The AI listens, asks follow-ups, and responds just like a real interviewer.

Get a detailed breakdown of your answers with scores, insights, and areas to improve.

Overall Score

82 / 100

Good

Communication 88

Structure 79

Specificity 74

Tip: Strong opening with clear context. Try adding measurable outcomes to strengthen your STAR answers.

After every session you get a detailed breakdown — overall score, category ratings, and specific coaching tips to improve your next answer.

Google's process typically spans four to six rounds. Prepi helps you prepare for each one.

LeetCode-style problems on arrays, trees, graphs, and dynamic programming — with time and space complexity follow-ups.

Design large-scale systems like Google Search or YouTube, with deep dives on scalability, reliability, and trade-offs.

Questions on leadership, handling ambiguity, and collaboration assessed against Google's values and culture.

Team matching calls, hiring committee prep, or role-specific rounds — describe the exact round and Prepi tailors the session.

Start your first mock interview in seconds.