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 Concurrent Key-Value Store with Batch Writes Design the core implementation of an in-memory key-value store for concurrent callers. For this ...
Given two arrays of positive integers, convert each integer to its decimal string representation and find the maximum length of a common prefix betwee...
Given sorted request timestamps, matching IP addresses, a request limit, and a time-window length, return an array where 1 means the request is accept...
This question evaluates a candidate's ability to design a large-scale calendar backend, covering data modeling for events, recurrence, invitations, an...
Prove an Incremental Shuffle Is Uniform Consider this in-place shuffle for an array of length n: `text for i from 0 through n - 1: j = a uniformly...
Prepare for a OpenAI system design interview about design gpu scheduling for a video generation platform. This question focuses on requirements, archi...
Implement closed_interval_overlap(intervals, query_points). Each interval [start, end] is closed, so it contains both endpoints. Return [[maximum_over...
Prepare for a system design prompt about making a holiday lookup API much lower latency when data comes from a downstream service. The question focuse...
Discuss Collaboration, Feedback, and Conflict Prepare three evidence-based behavioral examples: one about collaboration, one about handling feedback, ...
Design Inventory Availability and Order Placement Design the inventory portion of an e-commerce system with two core operations: 1. Query the currentl...
This question evaluates a candidate's ability to design evaluation and debugging frameworks for production RAG systems, testing practical ML engineeri...
A/B Test on Delivery Completion Rate (Binary Outcome) Context: You are evaluating an A/B test on a binary metric (delivered_bool). Treat each order as...
Design a collaborative todo-list service — think shared lists where teammates add, edit, assign, reorder, and complete items, and see each other's cha...
Count Paths Without Three Consecutive Moves A frog starts at (0, 0) and must reach (right_steps, up_steps). Every move is exactly one unit right (R) o...
You are 7 years into your career and have just been contacted by a Netflix recruiter on LinkedIn for a Software Engineer role on an advertising team (...
Validate a Bijective Substitution Cipher Given a plaintext string and an encoded string of equal length, determine whether one consistent one-to-one c...
Problem Houses lie in a line. values[i] is the nonnegative payment for delivering to house i. Two delivery robots are available. Robot one can serve a...
You have just finished implementing a small game engine during a coding interview: a board data structure for a two-player piece-dropping game, a func...
Design a venue / facility rental system that lets organizers — schools, clubs, and event organizers — discover and rent out physical venues. Venues ar...
Discuss Production Recovery, Mentoring, Challenge, AI, and Conflict Prepare concise, evidence-based answers to the following operational and hiring-ma...