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."
Evaluate 'Job You May Be Interested In' Recommender
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Calculate Incremental Customers for Marketing Spend Justification
Incremental Customers Needed for Marketing Spend You previously computed the per-customer annual profit for a new cardholder, excluding partnership ma...
Master A/B Testing: Key Concepts and Methodologies Explained
A/B Testing and Causal Inference: Core Concepts You are a data scientist interviewing for a role working on an online product. Demonstrate practical A...
Assess Customer Value with Varied Contract Terms and Costs
Subscription Network Service: Customer Value and Contract Terms A subscription network-service provider wants to assess unit economics and portfolio i...
Explain App Growth Strategy and Key Performance Metrics
App Growth Strategy and Key Performance Metrics In an onsite Analytics and Experimentation interview, you must explain a favorite digital consumer app...
Optimize Credit-Card Strategy: Pricing, Limits, and Target Segments
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Solve Python Challenges: Reverse String, Palindrome, Fibonacci, Unique List
Scenario Live coding round – four quick Python exercises Question Implement a function that reverses a string in-place. Write code that returns True i...
Describe Your Research and Cross-Functional Collaboration Experience
Behavioral Interview: Research Rigor and Cross-functional Collaboration You are interviewing for a Data Scientist role in a technical phone screen. Th...
Engineer Features to Enhance Smartphone Battery Life Prediction
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Design Test Cases for UI Change: Ensuring Quality and Functionality
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Design Real-Time Credit Card Fraud Detection System
Design a Real-Time Credit-Card Fraud Detection System You are designing a real-time fraud detection system for an online payments platform that proces...
Define Credit and Its Importance for Consumers and Banks
Explain Credit and Why It Matters A bank is onboarding a new analyst and wants to confirm their understanding of fundamental lending concepts. You are...
Describe Leading a Project from Ideation to Delivery
Describe Leading a Project from Ideation to Delivery A hiring manager wants a deep dive into your most impactful project to evaluate ownership, techni...
Implement Left Join Using Python Dictionaries Efficiently
Orders +---------+----------+--------+ | order_id| customer | amount | +---------+----------+--------+ | 101 | C1 | 250 | | 102 | ...
Analyze Profit Decline: Data Collection and Hypothesis Testing
Analyze Profit Decline: Data Collection and Hypothesis Testing You manage a coffee shop whose profits have recently declined. You need to diagnose the...
Determine Probability of Single Ride on Following Day
Determine Probability of a Single Ride on the Following Day A pricing experiment gives each new rider two ride opportunities on day 1. For each offere...
Evaluate Social Media's Brand Advertising Effectiveness
Evaluate Social Media's Brand Advertising Effectiveness A retailer runs both direct-response ads and brand-awareness ads. Leadership suspects social-m...
Evaluate Energy One's Transition to Renewable Energy Sources
Evaluate Energy One's Transition to Renewable Energy Sources Energy One is evaluating a move from fossil fuels to renewable power and must analyze fin...
Describe Handling Cross-Functional Projects and Changing Priorities
Describe Handling Cross-Functional Projects and Changing Priorities This behavioral prompt evaluates how you collaborate across functions, respond to ...
Choose Metrics for Evaluating Fake-User Classifier
Choose Metrics for Evaluating a Fake-User Classifier A sudden spike in daily average comments may be driven by fake users. You are asked to build a bi...