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 Jira+Confluence RAG assistant
You are asked to design a simple Retrieval-Augmented Generation (RAG) system that answers employee questions using content from two internal products:...
Deep dive a technical project and its impact
Describe one technical project you led or significantly contributed to (DS/analytics/ML/engineering). The interviewer wants both a high-level story an...
Measure App Store success and debug funnel anomaly
Part A — Product case: measuring success for a new App Store Shopify is launching a Shopify App Store where merchants can browse/install apps built by...
Explain Java follow-ups after solving coding problem
After you implement an algorithmic solution in Java, the interviewers ask follow-up questions and request modifications. Answer/discuss (and, where re...
Check palindrome number and next palindrome
This question evaluates understanding of numeric and string manipulation along with algorithmic problem-solving for palindrome detection and generatio...
Design a DNA-sequence optimization loop
This question evaluates a candidate's ability to design an end-to-end ML-driven experimental optimization loop for DNA sequence engineering, including...
Implement a simple service with tests
Implement a simple service with tests You're given a short written specification for a small service class (no external dependencies). Implement the c...
Demonstrate Leadership Principles in Projects
Demonstrate Leadership Principles in Projects This Amazon Software Engineer behavioral/technical screen asks you to demonstrate the Amazon Leadership ...
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 an Enterprise Tool-Using Agent
Design an enterprise LLM agent that can use external tools to complete multi-step business tasks. Assume the agent may call tools such as document ret...
Infection Spread Time on a Grid
Infection Spread Time on a Grid You are given an m x n grid where every cell holds one of three integer values: - 0 — an empty cell that can never be ...
Design a marketplace price tracking service
Design a large-scale product price tracking service similar to an e-commerce price monitor. Users can submit product links from a major online marketp...
Decode an encoded string
Implement a decoder for an encoded string where repetition is expressed with a number followed by a bracketed substring. Rules: - A pattern k[substrin...
Derive Coefficient and Covariance in Regression Analysis
Derive Coefficient and Covariance in Regression Analysis This statistics prompt tests correlation constraints, regression slope relationships, covaria...
Develop Dynamic-Pricing Algorithm for Lyft Balancing Key Factors
Develop a Dynamic-Pricing Algorithm for Lyft You are tasked with building a dynamic-pricing system for Lyft, a two-sided ride-hailing marketplace. The...
Evaluate Optimal Jogging Routes Feature with A/B Testing
Evaluate an Optimal Jogging Routes Feature with A/B Testing Google Maps is considering a feature that recommends optimal jogging routes, such as safe,...
Evaluate Financial Feasibility of Ride-Sharing Service
Evaluate Financial Feasibility of a Ride-Sharing Service You manage a ride-sharing service and must analyze pricing, costs, capacity, and competitive ...
Investigate Super Bowl Ad Impact on User Sign-Ups and Revenue
Coinbase Super Bowl QR Ad: Sign-Ups, Revenue Impact, and Next Steps A crypto exchange airs a Super Bowl commercial featuring a QR code that awards a $...
Explain Python and Web Basics
In a software engineering interview, explain the following fundamentals: 1. In Python, what are the differences between a list and a tuple? When would...
Compute A/B test sample size and Bayes posterior
This question evaluates understanding of statistical power and sample size calculation for a two-sided A/B z-test as well as basic Bayesian posterior ...