Data science interview prep

Practice real data science interviews tuned by the interviewers who actually run them.

More than 50 real cases from FAANG interview loops. Real interviews are verbal. You practice the same way — out loud, with live pushback.

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Real case studies from

MetaTikTokDoorDashGoogleSpotifyNetflix
The interview

You talk. The interviewer pushes back.

A live conversation on a real case. The follow-ups, the redirects, the curveballs — calibrated by people who run this round at the actual company.

Live sessionCold Food Crisis · DoorDash · 12:41
Stage 1 · Investigation approach
Interviewer
“Cold food complaints spiked 34% over the past 3 weeks in 12 metro areas. You have 6 weeks of order data, delivery details, and a log of product changes. Walk me through your investigation.”
Listening — you’re speakingJust talk it through, like the real round
The pushback

“Two things changed in the last month. Could they be interacting?”

The debrief

Find out where you actually stand.

What was strong, what was weak, and what would’ve cost you the round — with the fix.

75
Session complete
Friend Content in Newsfeed · Meta · Product Sense
01Define ‘enough’84Strong
02Diagnose the gap88Strong
03Segment the analysis45Weak
04Design the experiment81Strong
Top growth area

Your one soft spot is segmentation. You reasoned well in aggregate but didn’t split the problem — break it out by user type and network size (new users vs. power users with large networks) before drawing conclusions.

The arc

Know when you’re ready.

You see the trend — and the next case drills what the last one exposed.

Your sessionsProduct Sense
Jun 28Cold Food Crisis62
Jul 2Instagram Ad Load Optimization68+6
Jul 6Friend Content in Newsfeed75+7
Next case · drills your gap
Discover Weekly Success Measurement
Segmentation under pressure — define metrics, segment by user
2,317

candidates have practiced a case this month.

Chapter one starts when you do.

Pick a case, talk it through, walk away with a real read on your performance.

Pick a case
Start practicing