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."
Walk through a resume deep dive
Behavioral Deep Dive: Most Impactful Infrastructure Project Context You are interviewing for a Software Engineer role. The interviewer will ask you to...
Handle disorganized interview logistics
Behavioral Prompt: Handling a Disorganized Interview Process (Software Engineer — Technical Screen) You are preparing for a Software Engineer technica...
Design a distributed system end-to-end
System Design: Multi-Tenant Interactive Analytics Platform Context Design a distributed, multi-tenant analytics service that lets customers: - Ingest ...
Design a Multimodal Neural Network
Design Prompt: Multimodal Text–Image Retrieval and Classification Context You are building a production system that uses both text (titles/description...
Describe feedback, conflict, and missed metrics
Question This Roblox software engineer onsite behavioral round covers three related leadership scenarios. Be ready to answer each with a concrete, str...
Discuss product sense and project deep dive
Onsite Behavioral & Leadership: Product Sense, Team Fit, and Project Deep Dive Context: Assume you are interviewing for a Software Engineer role on a ...
Design a menu manager with enums
Design and implement a console-based restaurant menu management program. Requirements: ( 1) There are exactly three fixed item categories represented ...
Differentiate Java final, finalize, finally
Differentiate Java's final, finalize, and finally. Define what final means for variables, methods, and classes and give examples; explain what finaliz...
Design a retail trading platform
Design a Retail Stock Trading Platform (Robinhood-like) Design a mobile-first retail stock trading platform for U.S. equities, similar to Robinhood. T...
Design a price tracking system
Question Design a price tracking system for e-commerce sites (similar to price-history tools such as CamelCamelCamel or Keepa). The system ingests pro...
Implement a type-erased function wrapper
Implement a minimal std::function-like callable wrapper in C++ using type erasure via inheritance and a virtual call. Define a template Function<R(Arg...
Expected Waiting Time for a Bus on a 10-Minute Schedule (and With Random Delays)
A bus route serves your stop on a fixed schedule: a bus is scheduled to arrive exactly every 10 minutes, around the clock. You walk to the stop at a r...
Discuss logistics and compensation
Discuss logistics and compensation Behavioral Screen: Logistics and Preferences Context: You are interviewing for a Software Engineer role. The interv...
Choose fastest way to transfer 2 TB
You need to transfer a 2 TB dataset to someone located in San Francisco as fast as possible. - What transfer method(s) would you choose and why? - St...
Explain motivation and mission alignment
In a behavioral interview for a mission-driven tech company, you are asked two related questions: 1. Why do you want to join this company? 2. How do...
How would you choose a classification threshold?
You trained a binary classifier that outputs a probability score p(y=1|x). You must choose a decision threshold t to convert probabilities into class ...
Build a Flexible Expense Rules Engine
This question evaluates designing extensible rule engines, predicate composition, data modeling for expense- and trip-level aggregation, and reasoning...
Reveal a Minesweeper Board
Implement the reveal operation for a Minesweeper board. Correctly handle mine clicks, numbered cells, and recursive empty-region expansion across all ...
Shortest Path in a Grid with Limited Obstacle Removal
This question evaluates a candidate's ability to extend classic breadth-first search into a state-augmented shortest-path problem, where the state inc...
Maximum Sum Skyline
This question tests algorithmic problem-solving with array optimization under a mountain (single-peak) shape constraint. It evaluates practical applic...