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 exchange–trading system message flow
Design the message contract and flow between a firm's trading system (OMS/EMS) and an external exchange. Assume: - The trading system sends orders and...
Process Sharded Login Logs
You are given user login event logs generated by many servers across multiple regions. The logs are sharded by server or region, so no single machine ...
How to estimate a feature’s causal impact on time spent
You work on a Roblox-like game platform. A new product change ("feature") is rolled out and you want to estimate its causal impact on user engagement,...
How do you align ambiguous cross-functional projects?
This hiring-manager interview was a 45-minute behavioral discussion centered on past project work and communication skills. A candidate should be prep...
Solve Four Online Assessment Coding Tasks
Implement solutions for the following four independent coding problems. 1. Validate bracket strings You are given an array of strings. Each string ...
Count White Balls After K Steps
You are given a ring of N positions indexed from 0 to N-1. - At each position i, there is initially one ball whose color is either white or black. - E...
How Does Removing Zeros Affect Sharpe?
Suppose a return series has 2n observations. Exactly n observations are 0, and the remaining n observations are non-zero returns x1, x2, ..., xn with ...
Describe teamwork and personal achievements
The interview included several behavioral questions: 1. Tell me about a time you helped a teammate who was underperforming. 2. Describe the most chall...
Troubleshoot a Midnight Web Server Outage
You are on call for a Linux-based web application that lets customers submit orders and receive confirmations. In the middle of the night, you receive...
Design CI/CD for AI Services
Design a CI/CD platform for a large AI product organization. The platform must support backend services, model-serving APIs, data and feature pipeline...
Merge Message Context Windows
You are given a chat history in which each message has a unique integer id and a string content. Message IDs are strictly increasing, and the full his...
Implement a Snapshot Set Iterator
Design and implement a mutable SnapshotSet data structure. The set stores unique keys and supports normal set operations, plus snapshot iterators. Imp...
Design signup and login service
Design a basic email/password authentication service that supports user sign-up and login. You may not rely on third-party identity providers (no OAut...
Design an A/B testing platform
Design an internal A/B testing platform for a consumer product company. Product and engineering teams should be able to: - create, update, pause, and ...
Evaluate IP Access Rules
You are given a list of IPv4 access-control rules. Each rule consists of: - an action: allow or deny - a CIDR block such as 192.168.0.0/16 You are als...
Investigate High Memory Usage
You are the on-call engineer for a delivery platform. System context - Couriers use a mobile app to accept and complete deliveries. - The mobile app c...
Design a user behavior monitoring system
System Design: User Behavior Monitoring System You are asked to design a monitoring/analytics system that collects user behavior events from clients (...
How did you handle an ethical issue?
Describe a time when you encountered an ethical issue at work. What was the situation, why was it ethically sensitive, what options did you consider, ...
Meta PM Interview Questions
Product and Decision-Making Onsite Case Prompt Set You are a Product Manager candidate preparing for a mixed onsite loop covering strategy, data, desi...
Apply operations efficiently using Command pattern
You are given an initial state and a list of operations that should be applied to it. Setup - The state can be thought of as a mutable object (e.g., a...