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 Server Metrics Monitor
Design a server metrics monitoring system that periodically pulls metrics from a fleet of servers and makes them available for dashboards and alerting...
Explain Core ML Concepts
You are interviewing for a senior AI/ML-oriented Data Scientist role at a financial institution (J.P. Morgan). This is the "ML fundamentals" portion o...
Design Scalable Notification Rate Limiter
Design a production-grade rate limiter for notification sending that enforces limits at three levels of an organizational hierarchy. The system expose...
Calculate Bowling Game Score
Implement a function that calculates the total score of a complete ten-pin bowling game. Input: a list of integers rolls, where each integer is the nu...
Design a distributed job scheduler
Design a distributed job scheduling system for internal engineering teams (think "cron as a service"). Teams register jobs through an API; the platfor...
Design a Cloud File Storage Service
Design a cloud file storage and collaboration service similar to Google Drive or Dropbox. At a high level, the service must let users store files in a...
Design a Hosted Notebook Platform
Design a hosted notebook platform for interactive code execution — a cloud-based notebook service in the spirit of Google Colab, Deepnote, or Hex — wh...
Generate a ride map image via POST API
You are given a local JSON file ride-simple.json containing a recorded bike ride as an ordered list of GPS points. Your job is to turn this ride into ...
Implement a Recipe Cart
You are building a shopping cart for a cooking app. The system is initialized with: - A recipe catalog: each recipe_name maps to a list of ingredients...
Explain Logistic Regression, Backprop, and Adam
Walk through the mathematical foundations that connect logistic regression to modern deep-learning training. The interviewer expects you to write the ...
Answer AI Safety Behavioral Prompts
You are preparing for the final "culture" / hiring-manager rounds of a Software Engineer interview at an AI-focused company (the context here is Anthr...
Fix a Corrupted Bootloader Instruction
You are given a bootloader program as a list of text instructions. Each instruction has an opcode and a signed integer value, such as plus +1 or jump ...
Design a multi-threaded synchronous log writer
Problem Design a log(message) component that is called from many application threads concurrently and appends each message to a single log file on dis...
Mine Novel Images from Unlabeled Data
Design a machine learning system that mines novel or interesting images from a massive, unlabeled image corpus. The corpus is far too large for exhaus...
Design a Secure Copilot API
Design a secure API for an enterprise AI copilot product. The product serves many independent organizations (tenants). Authenticated end users send pr...
Design a Real-Time Chess Service
Design an online chess service that supports real-time, two-player games. Users should be able to create or join a game, make legal moves, and see the...
Debug a Broken Transformer
You are handed a Transformer model implementation (PyTorch-style) that does not train correctly — the loss is not behaving as expected. The model runs...
Explain code complexity and design two games
You are given three independent interview prompts. 1) Code comprehension & complexity - Given two short code snippets (language-agnostic), explain in ...
Design a disk-backed KV store under contention
Design a Disk-Backed Key–Value Store Under Contention Design a single-node key–value store with the following two defining characteristics: - Large va...
Debug and Extend Cursor Queries
You are in an AI-assisted coding interview. You may consult AI-generated suggestions, but you are expected to validate them, explain your reasoning ou...