← Google Interview Insights

Google·Software Engineer·Hiring Manager Screen·Senior

Senior
May 2026

Summary

Google EM interview with one question that sounds deceptively easy until you're actually in the seat trying to explain a technical concept to a five-year-old without sounding like a Wikipedia article.

Questions Asked (1)

Q1

How would you explain what an API is to a five-year-old?

API & IntegrationsTechnical Trade-offs
Author's notes

I went with some analogy about a waiter taking orders between a kitchen and a customer.

Create a free account to read the full note

AI HintsAI Generated

Suggested Approach

Use a simple, relatable analogy like a restaurant waiter to explain how an API lets two things talk to each other without needing to know the details. Keep the language playful and concrete, avoiding technical jargon, and focus on the idea of asking for something and getting a response.

Pro tip: Show you can tailor explanations to any audience—this is crucial at Google where engineers often explain complex systems to non-technical stakeholders. End by briefly connecting the analogy to a real engineering scenario to demonstrate depth.

1. Pick a familiar analogy

Choose a simple everyday scenario a child would understand, like ordering food at a restaurant or asking a friend for a toy.

2. Define the two parties

Identify the 'asker' (you) and the 'provider' (the kitchen or friend) and explain that they don't talk directly.

3. Introduce the messenger

Explain that the waiter (the API) takes your request, delivers it, and brings back what you asked for.

4. Highlight the rules

Mention that the waiter follows specific rules (like a menu) so both sides know what can be asked and how.

5. Connect to real life

Briefly relate the analogy to a real API example, such as a weather app asking a server for today's forecast.

Key Points to Mention

  • API stands for Application Programming Interface, but avoid the acronym when explaining to a child.
  • An API is a set of rules that lets two programs communicate.
  • It acts as a messenger or intermediary, hiding complexity.
  • The request-response pattern: you ask for something, you get a result.
  • APIs define what you can ask for and how to ask, like a menu.
  • Real-world examples: weather apps, payment systems, or social media logins.

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.