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."
Assess Probability of Heads in Coin Tosses
Assess Probability of Heads in Coin Tosses Probability with Coin Tosses and the Normal Distribution Context Onsite data scientist screening question a...
Design A/B Test for Cost-Per-Conversion Efficiency Analysis
Design A/B Test for Cost-Per-Conversion Efficiency Analysis Multi-Arm A/B Test: Comparing Cost-Per-Conversion Across Channels Scenario You need to com...
Track Metrics to Measure Push Notification Quality
Track Metrics to Measure Push Notification Quality Scenario A consumer mobile app sends push notifications to drive user engagement. You need to evalu...
Optimize Churn Prediction: Feature Engineering and Model Selection
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Investigate Causes of Driver WOW Score Drop
Investigate Causes of Driver WOW Score Drop Investigating a 10% QoQ Drop in Driver WOW (Satisfaction) Context Assume WOW is a standardized driver sati...
Estimate Redesign Impact Using Propensity Score Matching
Estimate Redesign Impact Using Propensity Score Matching Scenario A mobile app has been redesigned. Adoption is voluntary: users choose to upgrade to ...
Diagnose Decline in First Day Funding Rate
Diagnose Decline in First Day Funding Rate Diagnostic Case: First-Day Funding Rate Drop Context You are on a product analytics team monitoring onboard...
Coordinate Resources and Resolve Conflicts for Project Success
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Explain Type I vs. Type II Errors in A/B Testing
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Explain Algorithm's Disproportionate Impact on Demographic Segments
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Analyze Transactions for Risk and Implement Mitigation Strategies
Analyze Transactions for Risk and Implement Mitigation Strategies Real-Time Payments Risk: Accept or Decline, With Immediate Mitigations Scenario Two ...
Connect-N on an Infinite Board with Gravity
You are asked to implement a variant of the classic Connect Four game, played on an unbounded board. Game Rules - The board consists of vertical colum...
How handle disagreement with your manager
How handle disagreement with your manager Behavioral Question You disagree with your manager’s decision on a project (e.g., priorities, methodology, t...
Implement a key-value CRUD store
Implement an in-memory key–value store that supports create, read, update, and delete operations. Expose APIs such as put(key, value), get(key), updat...
Answer behavioral prompts for quant internship
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Address miscommunication and alignment
Address miscommunication and alignment Behavioral: Handling Miscommunication and Alignment in a Technical Screen Context: You are in a software engine...
Explain motivation, UX quality, and change handling
Explain motivation, UX quality, and change handling Behavioral & Leadership Technical Screen (Software Engineer) Context You're interviewing for a Sof...
Troubleshoot a production incident end-to-end
Troubleshoot a production incident end-to-end Incident Troubleshooting: Intermittent Failures and Elevated Latency in Transfers Context A microservice...
Validate course catalog dependencies
Design a function to validate an e-learning course catalog. You are given: ( 1) a set of course IDs, and ( 2) a list of prerequisite pairs (u, v) mean...