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."
Design a Netflix-like streaming platform
Design a Netflix-like streaming platform System Design: Netflix‑Like Video Streaming Platform Context Design a large-scale video streaming platform th...
Describe your most complex end-to-end project
Describe your most complex end-to-end project End-to-End Project Deep Dive (Behavioral) Describe the most complex end-to-end project you led or signif...
Design a scalable inventory system
Design a scalable inventory system System Design: Multi-Warehouse, Multi-Channel Inventory Service You are designing an inventory service for an e-com...
Compare deep learning framework trends
Compare deep learning framework trends This is an open-ended discussion question with two parts: 1. What high-level trends are happening at the deep l...
Design elevator scheduling for small building
Design elevator scheduling for small building Design the control policy for a single elevator serving a small building: 3 floors plus 1 basement (stop...
Sort a Large Array Using Multiple Threads
Sort a Large Array Using Multiple Threads You are given a large array of integers nums and a thread count k. Sort the array in ascending order using m...
Compare heap, stack, Protobuf, gRPC, SQL, CI/CD
Compare heap, stack, Protobuf, gRPC, SQL, CI/CD Technical/Phone Screen: Core Systems and Data Concepts You are interviewing for a Software Engineering...
Show Behavioral Fit and Experience
Show Behavioral Fit and Experience Behavioral and Leadership HR Screen — Software Engineer (Netflix) Context: This is an HR screen focused on your bac...
Process auth requests with fraud rules
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Show leadership and teamwork
Show leadership and teamwork Behavioral Leadership Question Context You are in an onsite software engineering behavioral and leadership interview. The...
Answer core behavioral questions for data roles
Answer core behavioral questions for data roles You are interviewing directly with a hiring manager who is known to be very selective. The interview i...
Design an internal data-access chatbot
Design an internal enterprise chatbot for employees. The bot should answer questions and help with tasks by accessing internal data sources (e.g., kno...
Retain Top K Elements
Given a list of integers nums and an integer k, return a new list formed from the original list after removing every element except the k largest elem...
Implement an In-Memory File Storage System
Implement an in-memory file storage service. You need to support files identified by a unique full path string, such as "/docs/a.txt". Each file has a...
Implement Random Connectivity and Grid Routing
This entry contains two independent coding problems. Problem 1: Uniformly connect node groups You are given k non-empty, disjoint groups of unique nod...
Determine Whether Queries Can Zero Array
This question evaluates competency in array manipulation, range updates, and feasibility under constraints, focusing on reasoning about sequential int...
Explain confounding with an Uber example
Question You are interviewing for a Data Scientist role and are given access to Uber / Uber Eats data. Answer the following about confounding in causa...
Explain surprisal and its units
You are discussing a language-modeling / NLP project. The interviewer asks about surprisal. 1. Define surprisal for an event/token with probability \(...
Design a scalable notification system
Problem Design a notification system for a company at Airbnb-like scale that can send notifications to different user types (e.g., customers/guests, h...
Explain multicollinearity and OLS assumptions
Explain multicollinearity and OLS assumptions Linear Regression Technical Screen: OLS Assumptions and Multicollinearity Context: You are asked to summ...