System design interviews

Get grilled before
the real thing.

A relentless AI interviewer that probes your architecture, follows up, and pushes back — so the real system design round feels easy.

Start a mock interview
live session · system design
28:14
Adaptive grilling
Follow-ups that bend to your answers — exactly like a real panel.
The whole stack
Sharding, caching, queues, consistency — the trade-offs that decide the round.
Honest scorecard
A clear breakdown of where you cracked, after every round.
How it works

Three steps. One honest session.

Unlike generic mock interviews, DevGrill generates a question that sits at the intersection of what you know and what the JD requires — every time.

Step 01

Upload your resume and job description

Paste the JD you applied to and upload your resume. DevGrill reads both and identifies exactly where your experience falls short of what the role requires.

Step 02

Get grilled by Mr. Grill

A personalized system design interview based on your actual skill gaps — not generic questions. Four phases: requirements, design, deep dive, and scale. Mr. Grill doesn’t let you off easy.

Step 03

See your honest score

A detailed report with phase-by-phase scores, specific quotes from your answers as evidence, gap analysis, and resume advice tailored to the role you’re targeting.

The whole interview takes 20–30 minutes. The feedback tells you exactly what to work on before the real thing.

Senior System Design Interviewer
Mr. Grill
Online — Ready to interview
Meet Mr. Grill

“I’m not here to test what you’ve memorized.
I’m here to understand how you think.”

Mr. Grill is DevGrill’s AI interviewer, built to simulate the experience of a senior engineer conducting a real technical interview.

He reads your resume, understands the role you’re applying for, and generates interview questions tailored to your background—not generic question banks. Throughout the interview, he’ll challenge assumptions, probe design decisions, and push deeper whenever an answer feels incomplete.

No hints. No easy passes. Just honest practice.

Resume-Aware
Adaptive Follow-ups
Company-Specific Interviews

“The best interviews don’t test memory.
They reveal how you think.”

DevGrill — Get grilled before the real thing.