System Design mock interview with an AI interviewer

What System Design interviewers assess

Requirements

Clarifying scope, users, read/write patterns and non-functional needs.

Estimation

Back-of-envelope numbers for traffic, storage and bandwidth.

Architecture

APIs, data model, storage choices, caching, queues and partitioning.

Trade-offs

Consistency vs availability, cost vs latency, build vs buy.

Reliability

Failure modes, retries, idempotency, observability and graceful degradation.

Sample System Design interview questions

Your interview is generated from your own profile — these show the style and depth to expect.

1. 1Design a URL shortener that handles 10,000 writes per second.
2. 2Design a notification system for 50 million users across email, SMS and push.
3. 3How would you design a rate limiter shared across many API servers?

How the mock interview works

• Tell us your target role, level, skills, job description and resume — free.
• Our AI builds a 15-question plan for your exact profile and shows you the topics before you pay.
• Meera, your AI interviewer, asks each question by voice with live captions; you answer by voice or typing.
• Follow-ups probe vague answers, like a real panel.
• Get a 360° scorecard: competency scores with evidence, a rubric and model answer per question, and a 7-day prep plan.

Frequently asked questions