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."
Explain Linear Regression Feature Transformation Equivalence
Explain Linear Regression Feature Transformation Equivalence Linear Regression Feature Representations and High-Dimensional Modelling Context You are ...
Design Real-Time Analytics Pipeline with Kafka and Flink
Design Real-Time Analytics Pipeline with Kafka and Flink Real-Time Clickstream Analytics Pipeline with Kafka and Flink Scenario You need to design a r...
Validate Unit-Test Coverage and Identify Missing Scenarios
Validate Unit-Test Coverage and Identify Missing Scenarios Scenario Tech round: reviewing an existing unit-test that exercises the class from Part 2 Q...
Determine Earliest Start Date for Strategic Business Analyst
Determine Earliest Start Date for Strategic Business Analyst Behavioral Question — Earliest Start Date Context HR phone screen for a Data Scientist po...
Evaluate Impact of $1 Fee on Fast-Food Profitability
Evaluate Impact of $1 Fee on Fast-Food Profitability Experiment Design: $1 Delivery-Fee Surcharge on Unprofitable Restaurants Scenario About 10% of fa...
Investigate Pop-up Impact on Partner Referral Conversions
Investigate Pop-up Impact on Partner Referral Conversions Partner-Referral Conversions Fell After App Pop-up: Diagnose, Quantify, and Decide Context Y...
Resolve Team Disagreement on Off-Site Activity Choice
Resolve Team Disagreement on Off-Site Activity Choice Behavioral Scenario: Off-site Activity Disagreement Context You’re organizing a team off-site fo...
Describe Your Role in a Recent Successful Project
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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 ...
Answer Statistics Questions for Spokeo DS Role Quiz
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Calculate Break-even for New Credit Card Product Launch
Calculate Break-even for New Credit Card Product Launch Break-Even for a Credit Card with Annual Fee, Interchange, and Cashback Context You are evalua...
Influence Stakeholders for Product Decision at Meta
Influence Stakeholders for Product Decision at Meta Behavioral: Influencing Stakeholders To Drive a Product Decision Scenario Cross-functional product...
Ensure Effective Teamwork Amid Conflicting Stakeholder Opinions
Ensure Effective Teamwork Amid Conflicting Stakeholder Opinions Behavioral: Cross-Functional Collaboration, Miscommunication, and Conflict Handling Co...
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 ...
Calculate Expected Flips for Two Heads Coin Toss
Calculate Expected Flips for Two Heads Coin Toss Scenario Experian DataLabs online assessment – core probability section. Several short probability pr...
Analyze Mobile Promo Orders with SQL Query and Metrics
orders +-----------+---------+--------------+------------+-----------+----------+ | order_id | user_id | order_amount | order_date | is_mobile | is_p...
Explain Deep Learning to a 5-Year-Old Child
Explain Deep Learning to a 5-Year-Old Child Microsoft Phone-Screen: Machine Learning Fundamentals You are interviewing for a machine learning/data sci...
Assess Cultural Fit and Problem-Solving in Reality Labs Role
Assess Cultural Fit and Problem-Solving in Reality Labs Role Behavioral and Leadership Interview Prompts (Data Scientist, Reality Labs) Context The hi...
Evaluate New Ad Model with A/B Testing Experiment
Evaluate New Ad Model with A/B Testing Experiment Evaluate a New Ads Recommendation Model via Online Experimentation Scenario You have trained a new a...
Analyze Comment Distribution Using Statistical Metrics and Tests
Analyze Comment Distribution Using Statistical Metrics and Tests Assessing Concentration of Comments Across Posts Scenario You are analyzing comments ...