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."
Debug Watch List Movie Operations
You are given a full-stack Movie DB application. Users can log in, create, update, and delete watch lists, and add or remove movies from a watch list....
Design RAG Evaluation and Debugging
You own a production RAG-powered semantic search feature for a fintech product. Users enter natural-language questions; the system retrieves relevant ...
Design a Distributed Rate Limiter
Design a distributed rate limiting system for a large API platform. The platform runs many API gateways and backend services across multiple regions. ...
Design a prompt playground
Design a prompt playground for developers and prompt engineers. The product lets users write prompts, choose model settings, run prompts against AI mo...
Design a One-on-One Chat Service
Design a scalable one-on-one (1:1) chat service. The service lets registered users exchange private text messages in real time across web and mobile c...
Design a Food Rating System
Design a rating and review system for a food delivery marketplace (e.g. DoorDash). Users of the system should be able to: - Rate a food item on a fixe...
Discuss Ethical Judgment and Unwanted Work
You are interviewing for a senior infrastructure software engineering role. This is the Culture / behavioral round, and the interviewer is often not a...
Implement 1NN with NumPy
Implement a 1-nearest-neighbor (1NN) classifier from scratch using NumPy, then show that the same decision can be expressed as a neural-network-style ...
Measure Bird Species Segregation
You are a data scientist analyzing bird observations from a forest. The ecology team wants to know whether different bird species are spatially segreg...
Java, Spring & Kafka Fundamentals Deep-Dive
Java, Spring & Kafka Fundamentals Deep-Dive This is a rapid-fire fundamentals interview for a senior backend engineer working in the Java/Spring ecosy...
Design Video Generation Orchestration
Design a scalable system to orchestrate AI video generation (think Sora-style text-to-video). Users submit text prompts to generate videos. For each s...
Hiring-Manager Behavioral Round: Impact, Conflict, Cross-Functional Work, and Influencing Without Authority
This is a 40-minute hiring-manager (HM) behavioral round for a software-engineering role. The manager moves quickly through several leadership and col...
Design a Security Monitoring Framework
Design a security monitoring framework for a cloud infrastructure environment. The framework must continuously monitor hosts and workloads for suspici...
Prevent Duplicate Payments Under High Load
Prevent Duplicate Payments Under High Load You are designing the payment-processing service for a company that charges customers' cards (e.g. a payrol...
Design a News Aggregation System (Google News-style)
Design a large-scale news aggregation service similar to Google News. The system continuously discovers and crawls news articles from tens of thousand...
Design a Food-Delivery Backend (Uber Eats-style)
Design the backend for a food-delivery platform like Uber Eats. A customer opens the app, browses nearby restaurants, places an order from a menu, pay...
Design a Resilient Document Aggregation Service
Design a Resilient Document Aggregation Service Your team owns a backend service that assembles a "document bundle" for clients. To build one bundle, ...
Design a Task Scheduler for Opaque Long-Running GPU Jobs ("Design Sora")
Design a task scheduler that runs long-running, opaque video-generation jobs at scale (the "Design Sora" prompt). Your platform lets users submit a te...
Design an Instagram-like Feed System
Design an Instagram-like photo-sharing application, focusing on feed generation and delivery. Your design should support: - Users creating posts conta...
Investigate Metric Drops and Coupon Retention
You are a Data Scientist for a ride-sharing marketplace operating in Toronto. This is a multi-part product-analytics case. Work through the three rela...