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 Concurrent Car Reservation Service
Design a Concurrent Car Reservation Service Prompt Design a car reservation service. A customer searches for an available car for a location and time ...
Approach an ambiguous business problem
This question evaluates a candidate's ability to handle ambiguity in ML system design by assessing skills in stakeholder communication, problem scopin...
Find valid split-stay listing combinations
You are building a feature that suggests a split stay: a guest stays in one home for the first part of a trip, then switches to a second home for the ...
Validate transactions with risk rules and reporting
This question evaluates skills in CSV parsing and input validation, numerical and timestamp parsing, rule-based fraud detection and behavioral feature...
Explain Graph Recommendations and Vision-Language Model Training Trade-offs
Practice a Etsy machine learning interview question about explain graph recommendations and vision-language model training trade-offs. The prompt cove...
Assign Reviewers from Changed Files
Write a Java program that helps automatically assign a code reviewer after a pull request is opened. You are given: 1. A local Git repository path. 2....
Implement a Coin-Constrained Jump Strategy
This question evaluates a candidate's ability to design a stateful decision-making strategy combining physics-based motion reasoning, resource-constra...
Implement a React flag loader with typewriter effect
Scenario You are given a small React + TypeScript project with a Mocha test runner (and an autograder). The task is a practical front-end mini-project...
Handle feedback, change pivots, and conflict
Question In the behavioral portion of the Meta Data Scientist screen, answer the following leadership prompts using concrete examples from your own wo...
Compute CTR for peak vs non-peak hours
This question evaluates a candidate's ability to compute time-based click-through rate metrics using SQL and data manipulation techniques, including j...
How Would You Prevent Hallucinations in an LLM-Based System?
You are interviewing for an AI-focused Software Engineer role at a company building products on top of large language models. During the screen, the i...
Pick a Number 1-100 Where the Higher Pick Pays a 10-Point Penalty: Optimal Strategy
Two players simultaneously each pick an integer from 1 to 100 (inclusive). The winner is decided as follows: take the larger of the two picks, subtrac...
How would you build and evaluate a classifier?
This question evaluates a data scientist's proficiency in binary classification model evaluation, end-to-end machine learning project design, and mode...
How would you estimate impact without A/B?
This question evaluates a data scientist's competency in causal inference, experimental design, metric definition and diagnostics, with specific empha...
Discuss resume and company fit
Behavioral Prompt: Resume Walkthrough (RL or Systems), Motivation, and 6–12 Month Plan Context You are interviewing for a Machine Learning Engineer ro...
Design a cloud AI inference platform
System Design: Cloud AI Inference Platform for Real-Time and Batch Context Design a multi-tenant cloud platform that serves machine learning models fo...
Solve probability and expectation problems
Probability and Expectation Practice (Take‑home) Assume all coins and dice are fair unless stated otherwise. Show reasoning and final results. 1) Thre...
Explain background, motivations, and stakeholder handling
Behavioral HR Screen: Software Engineer (Shopify) You are preparing for a first-round HR screen for a Software Engineer role. Provide concise, structu...
Answer general behavioral questions
Behavioral Interview Prompts (Software Engineer — Technical Screen) To prepare concise, high-impact answers, use STAR/CAR (Situation–Task–Action–Resul...
Diagnose distributed database inconsistency
Distributed Database Incident: Inconsistent Replicas You are on-call for a distributed database that serves production traffic. Dashboards show data i...