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."
Identify Algorithms for Detecting Malicious Duplicated Content
Identify Algorithms for Detecting Malicious Duplicated Content Detecting Malicious Duplicated Text (DOT) Scenario You are selecting technical approach...
Reflect on Conflict Resolution and Key Learnings
Reflect on Conflict Resolution and Key Learnings Behavioral Interview Prompts (Data Scientist, Onsite) Instructions Use the STAR framework (Situation,...
Estimate Fake Accounts Using Data Signals and Sampling
Estimate Fake Accounts Using Data Signals and Sampling Estimating Fake Accounts on a Social Network Background A large social platform wants to estima...
Design a Churn Model: Handle Missing Data and Justify
Design a Churn Model: Handle Missing Data and Justify Churn Prediction on Messy Subscription Data Context You are building a binary churn-prediction m...
Explain K-Fold Cross-Validation and Its Trade-Offs
Explain K-Fold Cross-Validation and Its Trade-Offs Technical Phone Screen: Cross-Validation Task You are interviewing for a Data Scientist role. Expla...
Modify Instagram Feature: Track User Engagement Metric
Modify Instagram Feature: Track User Engagement Metric A/B Test Design for Modifying a Disliked Social Feature Scenario A social-media company plans t...
Identify Transactions During 'Golden' Membership Period
transaction +-----------+---------+------------+---------+ | trans_id | user_id | trans_date | amount | +-----------+---------+------------+--------...
Optimize Travel Costs and Generate Rotational Symmetric Numbers
Scenario You are building a travel-search engine that must 1) show customers the cheapest round-trip they can book if departure and return prices vary...
Mitigate Data Mistakes and Improve Team Efficiency
Mitigate Data Mistakes and Improve Team Efficiency Behavioral Questions (STAR Format) Context: You are interviewing for a data role at Amazon, where l...
Choose Between JOIN, BLEND, and RELATIONSHIP in Tableau
Choose Between JOIN, BLEND, and RELATIONSHIP in Tableau Tableau Data Modeling, Filters, and Visual Design Scenario You are preparing a Tableau dashboa...
Derive Key Business Metrics Using SQL or Python
Orders +----------+-------------+------------+---------+------------------+ | order_id | customer_id | order_date | amount | product_category | +----...
Ensure Data Quality and Deliver Impact Amid Challenges
Ensure Data Quality and Deliver Impact Amid Challenges Behavioral Question — Data Ownership, Dive Deep, and Measurable Impact Context You are intervie...
Diagnose Retail Revenue Drop and Predict Ad Impact
Diagnose Retail Revenue Drop and Predict Ad Impact Scenario You are a data scientist for a consumer fintech app preparing to run a Super Bowl TV ad an...
Analyze Success Metrics and Diagnose Crypto Feature Issues
Analyze Success Metrics and Diagnose Crypto Feature Issues Post-Launch Evaluation: Crypto Trading Feature Context You are a Data Scientist evaluating ...
Define Success with Contact Syncing for Growth and Evaluation
Define Success with Contact Syncing for Growth and Evaluation Using "% of users with contacts synced" as a growth driver Context You are a data scient...
Analyze KPI Drop: Immediate Steps for Stakeholder Persuasion
Analyze KPI Drop: Immediate Steps for Stakeholder Persuasion Behavioral + Mini-Case: Persuading with Data and Responding to a KPI Drop Context You are...
Count Word Frequency and Print Top Three Words
Scenario First-round Python coding screening Question Using only basic Python, write a function that receives a list of strings and returns a dictiona...
Resolve Conflicts in Data Science Leadership Scenarios
Resolve Conflicts in Data Science Leadership Scenarios Behavioral and Leadership Prompts (Onsite — Data Scientist) Use the STAR method (Situation, Tas...
Explain P-Value and Errors in A/B Testing
Explain P-Value and Errors in A/B Testing A/B Test Design and Analysis: Core Concepts Scenario You are advising on the design and analysis of an A/B t...
Describe Building and Deploying a Machine Learning Model
Describe Building and Deploying a Machine Learning Model Technical Onsite Scenario: End-to-End ML Project Deep Dive Prompt Describe a machine learning...