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 Versioned Recipe Store with Search and Rollback
Prepare for a The Trade Desk software engineering interview question about design a versioned recipe store with search and rollback. The prompt highli...
Design a Rental Search and Booking Platform from Startup to Scale
Design a short-term rental search and booking platform that can evolve from a startup architecture to large-scale traffic. Balance fast, possibly stal...
Discuss Collaboration, Feedback, and Conflict
Discuss Collaboration, Feedback, and Conflict Prepare three evidence-based behavioral examples: one about collaboration, one about handling feedback, ...
Design exchange–trading system message flow
Design the message contract and flow between a firm's trading system (OMS/EMS) and an external exchange. Assume: - The trading system sends orders and...
Evaluate Biker Feature Success
DoorDash is considering launching Biker Mode, a feature for Dashers who deliver by bicycle. Biker Mode may help bicycle Dashers identify suitable shor...
Design Calendar Event Conflict Handling
Design the event settings and conflict-handling system for a large-scale calendar product similar to Google Calendar. Users can create, update, and de...
Debug a Concurrent Job Scheduler
You are handed a buggy Python job scheduler that runs many independent jobs concurrently. Each job has an ID, a callable to execute, a maximum retry c...
Evaluate Noisy Data for LLM Post-Training
This question evaluates competency in post-training data curation and experimental judgment for large language models, including assessing noisy datas...
Find the Largest Equivalence Class of Fractions
Given a list of integer fractions (numerator, denominator), find the largest number of fractions that represent the same rational value. Fractions may...
A Project You Decided Not to Ship
This question evaluates judgment and ownership by asking about a project abandoned before release rather than one that shipped. It tests decision-maki...
Explain Your Job Search and Interest in a Risk Data Role
Why are you looking for a new opportunity, and why are you interested in this risk-related data role at Morgan Stanley? Give an answer that is candid,...
Design a Fitness Activity Tracking App with Followers and Leaderboards
Design a fitness activity tracking app where followers can see current trails, users can query top activities by time range, and leaderboards are supp...
Evaluate a Product Change That Adds More User Options
A product team wants to add more options to an existing user flow. Design an experiment to determine whether the change improves the product, and expl...
Staff Engineer Hiring-Manager Round: Platform Ownership, AI Adoption, and Cross-Team Influence
This question evaluates a candidate's ability to narrate scope, ownership, and cross-team influence at the senior or staff engineering level, using a ...
Process Operations for an In-Memory Key-Value Store
Process Operations for an In-Memory Key-Value Store Implement an in-memory key-value store that supports adding or replacing a value, deleting a key, ...
Object-Oriented Design: Snake Game
This question evaluates a candidate's ability to translate a familiar game into a clean object-oriented model, covering class decomposition, encapsula...
Answer why SWE and why Optiver
Behavioral Interview: SWE Intern at a Proprietary Trading Firm You are interviewing for a Software Engineer internship at a high-frequency / proprieta...
Design a Task Scheduler and Executor
Design a Task Scheduler and Executor Design a service that accepts tasks for future or recurring execution and dispatches them to workers. Constraints...
Design an A/B Testing Platform
Design an A/B Testing Platform Design a platform that lets product teams define an experiment, assign eligible users consistently to control or treatm...
Connect Your Hardest Project to Your Interest in a Role
Connect Your Hardest Project to Your Interest in a Role Give a concise self-introduction that explains why this company and role interest you. Then us...