45-minute system-design simulation

Make the real interview feel familiar.

Free for signed-in users. Choose your round, practise with an AI interviewer and get a scored report.

78 systems270+ puzzlesUp to 3 design loops

Interview setup

Choose your interview details

Company * (required)

MetaGoogle

Amazon

MicrosoftAppleNetflixUber+Other

Interview date (optional)

Interview type * (required)

System designBehavioral

Interview level * (required)

Mid-levelStaffPrincipal

Staff: Ambiguity, influence, and system-wide judgment

Microphone

Test it here, so the interviewer is not the one who finds out.

Microphone audio is sent only when you record an answer. Audio and transcripts are never sent to product analytics.

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