Prepare for your Google technical interview

System design, coding, and algorithms rounds calibrated to Google’s engineering-excellence culture.

Socratify AI

The Interview

What Google is looking for

System Design Interview

01Scalability & Performance

02Data Modeling & Storage

03API Design & Contracts

04Fault Tolerance & Reliability

Coding Interview

01Algorithm Selection

02Time & Space Complexity

03Edge Case Handling

04Code Clarity & Style

Googleyness Interview

Googleyness & Leadership

01Navigating Ambiguity

02Collaboration & Influence

03Driving Results

04Thought Leadership

Scale-first thinking//Engineering excellence bar//Distributed systems depth

Practice Library

Google exercises

Ready to ace your Google technical interview?

Prepare for your Google technical interview

System design, coding, and algorithms rounds calibrated to Google’s engineering-excellence culture.

Socratify AI

The Interview

What Google is looking for

System Design Interview

01Scalability & Performance

02Data Modeling & Storage

03API Design & Contracts

04Fault Tolerance & Reliability

Coding Interview

01Algorithm Selection

02Time & Space Complexity

03Edge Case Handling

04Code Clarity & Style

Googleyness Interview

Googleyness & Leadership

01Navigating Ambiguity

02Collaboration & Influence

03Driving Results

04Thought Leadership

Scale-first thinking//Engineering excellence bar//Distributed systems depth

How It Works

Master Google Technical Interviews

System design, coding, and Googleyness rounds, scored on Google’s evaluation dimensions. · Click to expand

1Your Technical Goals

System Design

Practitioner

Algorithms & Data Structures

Practitioner

2Technical Case Prep

Design a URL shortener handling 10B redirects/month with 99.99% availability.

CASE INTERVIEWHard

Google

3Frameworks

Framework

How should the write path (URL creation) work?

Key generation strategy?

Base62 encoding: 7 chars = 3.5T unique keys

Pre-generated key pool avoids collision checks

Storage layer design?

100M URLs x 1KB avg = ~100GB — fits in single-node DB

Range-based sharding on short key for horizontal scale

How should the read path (redirect) work?

Caching strategy for hot URLs?

Redis/Memcached: 80/20 rule — 20% of URLs get 80% of traffic

Cache hit ratio target: 95%+

Redirect mechanism?

301 (permanent) vs 302 (temporary) — tradeoff: cacheability vs analytics

Non-functional requirements and tradeoffs?

Availability vs consistency?

AP system: eventual consistency acceptable for reads

99.99% uptime SLA = ~52min downtime/year

Rate limiting and abuse prevention?

Token bucket per API key: 100 creates/min default

4Feedback

System Design

Distinctive

Algorithms & Complexity

Strong

Code Quality

Meeting Bar

Technical Communication

Strong

Repeat

Practice Library

Google exercises

Design a global URL shortener that handles 10 billion redirects per month with 99.99%...

CASE INTERVIEWHard

Technology · System DesignGoogle

Given a stream of events, design a system to detect trending topics in real time across...

LEARNHard

Technology · System DesignGoogle

Implement an LRU cache with O(1) get and put operations. Discuss how you would extend it...

LEARNMedium

Technology · AlgorithmsGoogle

Tell me about a time you had to make a significant technical decision with incomplete...

BEHAVIORALMedium

Behavioral · Navigating AmbiguityGoogle

Describe a situation where you improved the reliability or performance of a production...

BEHAVIORALHard

Behavioral · Engineering ImpactGoogle