Machine Learning Engineer + Data Scientist + Software Engineer Interview Questions
Practice the exact questions companies are asking right now.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Compute variance of trading profits
Compute variance of trading profits Symmetric Random Walk Trading Strategy: Profit Variance and Expectation Setup - Let S_t be a simple symmetric rand...
Explain ML framework trends
Explain ML framework trends ML Framework Trends, Compilation Pipeline to GPU, and Hardware-Aware Deployment Context You are asked to explain how moder...
Pivot order-status counts
Pivot order-status counts Given an orders table (order_id, shopper_id, order_date, status, …), pivot the data so that each row is one shopper and each...
Estimate Revenue and Profitability for Share Workplace's Paid Tier
Estimate Revenue and Profitability for Share Workplace's Paid Tier Freemium + Subscription Sizing, Margins, and Marketing Impact (Year 3) Context You ...
Describe Your Path and Key Data Science Project
Describe Your Path and Key Data Science Project Onsite Behavioral + Project Deep Dive (Data Scientist) Context You are in an onsite behavioral round f...
Design a System to Recommend Local Restaurant Profiles
Design a System to Recommend Local Restaurant Profiles Recommending Local Restaurant Pages in the News Feed Context Design a non-ads recommendation sy...
Convince Stakeholders: Prioritize Data Science Projects Effectively
Convince Stakeholders: Prioritize Data Science Projects Effectively Behavioral: Influencing Stakeholders and Prioritizing Work Context As a data scien...
Diagnose Decline in Delivery Success: Data, Hypotheses, Tests
Diagnose Decline in Delivery Success: Data, Hypotheses, Tests Diagnose a 10% Drop in Successful Deliveries Scenario You manage a territory in a food-d...
Resolve Team Conflicts: Actions and Outcomes Explored
Resolve Team Conflicts: Actions and Outcomes Explored Behavioral Question: Conflict Resolution and Career Motivation Scenario Visa analytics role – in...
Determine Probability of Fourth Good Response After Three Successes
Determine Probability of Fourth Good Response After Three Successes Evaluating Good-Response Rates for Chatbot Outputs Context You are evaluating chat...
Calculate and Compare Survey Response Rates for User Tenure
Surveys +--------+------------+--------------+----------+ | userid | date | survey_event | response | +--------+------------+--------------+----...
Assess Cultural Fit in Informal Hiring Conversations
Assess Cultural Fit in Informal Hiring Conversations Behavioral & Leadership — Informal Conversation Context Onsite conversation with a hiring manager...
Design Comprehensive Recommendation System for Spokeo Features
Design Comprehensive Recommendation System for Spokeo Features Design an End-to-End Recommendation System for Spokeo Scenario You are designing a new ...
Investigate Causes of Decline in Facebook Group Comments
Investigate Causes of Decline in Facebook Group Comments Scenario A sharp decline in Comments per Post (CPP) was observed in Facebook Groups last week...
Evaluate Product-Ranking Algorithm with Precision and Recall Metrics
Evaluate Product-Ranking Algorithm with Precision and Recall Metrics Scenario Instagram Shopping wants to improve its product‑ranking algorithm for th...
Design an A/B Test for Group Video Calls Impact
Design an A/B Test for Group Video Calls Impact A/B Experiment Design: Group Video Calls on Instagram Scenario Instagram wants to evaluate the impact ...
Determine Success Metrics for Biker Dasher Program Launch
Determine Success Metrics for Biker Dasher Program Launch Scenario DoorDash is considering a 'Biker Dasher' program to let couriers use bicycles (and ...
Analyze Trade-off Between DAU Growth and Ad Revenue
Analyze Trade-off Between DAU Growth and Ad Revenue Analytics Case: DAU vs. Ad Revenue Trade-off in a Consumer Video App Context You are a data scient...
Design an A/B Test for Homepage Layout Impact
Design an A/B Test for Homepage Layout Impact Experiment Design: New Homepage Layout → Purchase Rate Context You are designing an A/B test to evaluate...
Explain Your Motivation and Alignment with Apple Values
Explain Your Motivation and Alignment with Apple Values Behavioral Interview — Motivation and Values (Apple, Data Scientist) Prompt Why do you want to...