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."
Answer behavioral prompts for quant internship
Answer behavioral prompts for quant internship Behavioral and Leadership Prompts for a Data Scientist Take‑home Context You are applying for a Data Sc...
Detect duplicate files by content
Detect duplicate files by content in a filesystem. Given access to a directory tree, return groups of file paths that have identical byte content. Min...
Identify and fix deadlock in locked code
Identify and fix deadlock in locked code Multithreaded Deadlock: Diagnose and Fix Context You have concurrent code that acquires multiple locks and oc...
Explain motivation, UX quality, and change handling
Explain motivation, UX quality, and change handling Behavioral & Leadership Technical Screen (Software Engineer) Context You're interviewing for a Sof...
Build and optimize a video playlist component
Build and optimize a video playlist component Design and implement a video playlist component in React (functional components) that meets the followin...
Compute probability in urn with green returns
Compute probability in urn with green returns Urn Sampling with Replacement for Greens Only You have an urn with colored balls. You repeatedly draw on...
Solve string partition and equal-sum package problems
Solve string partition and equal-sum package problems 1) Given a string itemCategories (lowercase English letters) and an integer k (0 ≤ k ≤ 26), coun...
Answer common HM behavioral prompts
Answer common HM behavioral prompts Behavioral & Leadership Prompts (Technical Screen — Software Engineer) Context: You are preparing for a hiring man...
Design document editor with undo/redo and batching
Design a document-editing layer that supports applying edits and undo. Implement an API with apply(Operation op), undo(), and getText(). Then add tran...
Update a Neuron Grid
You are given an m x n integer matrix neurons. - A cell is a firing neuron if its value is 0. - A cell is a non-firing neuron if its value is greater ...
Design a URL Shortening Service
This question evaluates expertise in designing scalable, low-latency web services, covering URL alias generation and collision handling, storage and c...
Implement Calendar, Tokenizer, and Meeting Optimizer
This question evaluates competencies in interval scheduling and overlap detection, custom string tokenization and parsing rules, and combinatorial opt...
Design a pickup-area driver queue
Design an internal service for a ride-hailing company that maintains a driver queue for each pickup area, such as an airport pickup zone or staging lo...
Solve two interview coding problems
This question evaluates graph traversal and pathfinding with weighted edge composition for currency conversion reachability, and sequence partitioning...
Can you reach target with distance-threshold edges?
You are given a set of unordered 2D points points[], a start point and an end point (both are included in points), and a function: `text getDistance(p...
Describe a decision with incomplete information
Describe a decision with incomplete information Behavioral: Decision-Making Without Complete Information (Machine Learning Engineer) Provide a specifi...
Design leaderboard and messenger systems
Design leaderboard and messenger systems This Meta onsite system-design round asks you to design two large-scale systems back to back. Cover end-to-en...
Solve linked list, top-K, and string reduction
Solve linked list, top-K, and string reduction Solve the following algorithmic tasks: 1) Given a singly linked list, return the k-th node from the end...
Build and evaluate a Colab classification model
Build and evaluate a Colab classification model End-to-End Tabular Classification Workflow in Google Colab You are asked to design and implement a com...
Write good tests and define integration tests
Write good tests and define integration tests Test Design: Definitions, Trade-offs, and Best Practices Context You're building a small service for a t...