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."
Estimate Incremental Search-Ad Revenue Without an A/B Test
Practice estimating incremental search-ad revenue when 100 eligible users are randomly assigned to treatment outside a conventional A/B platform. Defi...
Implement DeleteTree With Limited Filesystem APIs
Review a filesystem implementation problem that asks you to delete an entire tree using only limited list, delete, and directory-check APIs. The quest...
Distribute Money Fairly Under Recipient Caps
Distribute Money Fairly Under Recipient Caps Problem Implement distribute(amount, recipients). amount is a pool of nonnegative integer minor currency ...
Calculate Tax from Progressive Brackets
Calculate Tax from Progressive Brackets Problem Implement calculateProgressiveTax(income, upperBounds, ratesBps) -> tax. income is a nonnegative integ...
Behavioral: Proudest Project, Conflict, and Failure
This question evaluates behavioral and leadership competencies through three classic prompts covering personal achievement, interpersonal conflict, an...
Process Calendar Events with Deletion, Pagination, and Overlap Queries
Process Calendar Events with Deletion, Pagination, and Overlap Queries Process operations against an in-memory calendar. Every event has a unique name...
Split a Message into Length-Limited Parts with Numbered Suffixes
Given a message string and a length limit, split the message into ordered parts. Each part must end with a suffix like <X/Y>, where X is the 1-based p...
Design a Bank Account OOP Simulation with Transfers, Payments, and Merges
Design an object-oriented banking simulation. Accounts can be created, balances can be queried, money can be transferred, payments can be recorded, an...
Explain Team Impact and Executive Collaboration
Explain Team Impact and Executive Collaboration Discuss how you created positive impact beyond your own assigned tasks and how you worked with senior ...
Design a Shared Calendar Service
Covers designing a shared calendar service: the database schema for events and recurring rules, reminders, and multi-user sharing and permissions. Inc...
Answer Netflix Culture Screen Questions
You are 7 years into your career and have just been contacted by a Netflix recruiter on LinkedIn for a Software Engineer role on an advertising team (...
Design low-latency trading infrastructure
This question evaluates understanding of low-latency trading system architecture, networking and protocol trade-offs (TCP/IP vs UDP), time synchroniza...
Design a Direct Messaging System for an E-commerce Marketplace
This question evaluates a candidate's ability to design a real-time messaging system, covering distributed systems concepts like durability, ordering ...
Implement a Simplified std::vector with Manual Memory Management
This question evaluates a candidate's grasp of low-level memory management in C++, including the distinction between raw allocation and object constru...
Design a Peer-to-Peer Money Transfer System
Design a peer-to-peer money-transfer product. Users can hold an account, send money to another user, view transfer history, and see an accurate balanc...
Resolve Conflict and Set a Team Objective
Resolve Conflict and Set a Team Objective Prepare two behavioral examples. Use real situations, distinguish your actions from the team's, and be ready...
Explain Core Python Runtime and Language Concepts
Explain Core Python Runtime and Language Concepts Answer the following Python questions as if you were reviewing production code. Use small examples w...
Show Teamwork and Drive Through Difficult Engineering Situations
Show Teamwork and Drive Through Difficult Engineering Situations Prepare two evidence-based examples from your experience. In the first, a peer asked ...
Solve a Difficult Problem and Navigate Disagreement
Solve a Difficult Problem and Navigate Disagreement Answer both parts using real professional, academic, or substantial personal-project examples. The...
Query an Indexed In-Memory Numeric Table
Query an Indexed In-Memory Numeric Table Problem Implement queryIndexedRows(rows, queries) -> answers for one immutable in-memory table containing onl...