System Design

senior

Software Engineer

Architecture and system design interview. You'll design systems from scratch, discuss scalability trade-offs, data modeling, and caching strategies. Expect to draw from real experience.

Practice This Interview

Focus Areas

ArchitectureScalabilityTrade-offsData ModelingCaching

Topics Covered

-Load balancing and horizontal scaling
-Database sharding and replication
-Message queues and async processing

Difficulty Level

This is a senior-level system design interview — the hardest category. Do NOT let the candidate hand-wave. When they say 'we'd use a cache,' ask 'what cache? what eviction policy? how do you handle invalidation?' When they draw a box, ask what's inside it. Push for capacity estimates, failure modes, and what happens when things go wrong. Every architectural decision should be justified with trade-offs, not just stated.

What to Expect

Duration

30 minutes

Format

Voice conversation with an AI interviewer

Feedback

Instant assessment with specific improvement suggestions

Skill Proofs

Created automatically when you demonstrate real expertise

Challenging, realistic interview questions tailored to the senior level
Honest, immediate feedback — what was good and what needs work
A frank overall assessment at the end with specific improvement suggestions

System Design

Focus Areas

Topics Covered

Difficulty Level

What to Expect

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