Interview Questions
Practice the exact questions companies are asking right now.
Questions
10.0k
Companies
520
Updated
08.21.2026
10.0k Questions 520 Companies08.21.2026
PLTCHK
"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"
_The_TaNk_
"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"
ChrisSenior SWE, LinkedIn
"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."
sleepy33
"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."
JakeSenior ML Engineer, Lyft
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
nuggetlord
"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."
CarlosFull Stack, Shopify
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
boba.tea.vibes
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
AndySWE-II, Google
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
couchpotato99
"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."
ShrutiData Engineer, Salesforce
"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."
midnightramen
"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."
BiancaFrontend Eng, Figma
"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."
tambrahm007
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
toa
"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."
Showing 20 results
Role
Hard
Software EngineerDesign multi-currency pricing end-to-end
System Design: Multi-Currency Price Display and Booking Context You are building a global travel marketplace where guests discover listings, view pric...
System Design
22
0
180 people solved
Aug 12, 2025
Hard
Machine Learning EngineerExplain and derive importance sampling estimators
Importance Sampling: Estimators, Properties, Optimal Proposals, and ESS Context You want to estimate an expectation under a target distribution p over...
Statistics & Math
13
0
169 people solved
Aug 12, 2025
Hard
Software EngineerDesign a dynamic rental pricing system
System Design: ML-Driven Nightly Pricing for Short-Term Rentals Context Design a production ML system that recommends (and optionally auto-sets) night...
ML System Design
16
0
160 people solved
Aug 12, 2025
Hard
Software EngineerDesign a customer LTV prediction system
System Design: End-to-End ML for Customer Lifetime Value (LTV) Context You are designing an end-to-end machine learning system to estimate customer li...
ML System Design
15
0
158 people solved
Aug 12, 2025
Medium
Software EngineerSenior+Lead a High-Leverage Project in a Regulated Legacy System
Lead a High-Leverage Project in a Regulated Legacy System Prepare a senior-level project deep dive. The project should have meaningful business impact...
Behavioral & Leadership
1
0
9 people solved
Apr 27, 2026
Medium
Software EngineerSenior+Build a Trust-Aware BIN Database
Build a Trust-Aware BIN Database Implement process_bin_operations(operations) for an in-memory database of card-number prefixes. A prefix identifies a...
Coding & Algorithms
1
0
15 people solved
Apr 27, 2026
Hard
Software Engineer AISolve Two Backtracking Array Problems
You will solve two independent coding problems. For each problem, first discuss edge cases, then implement a correct solution, and finally explain how...
Coding & Algorithms
36
0
292 people solved
Apr 27, 2026
Medium
Data ScientistCompute a Seven-Day Rolling Average
You are analyzing daily product metrics for the Fetch mobile app. Table daily_metric_values | Column | Type | Description | |---|---:|---| | metric_da...
Data Manipulation (SQL/Python)
2
0
14 people solved
Apr 27, 2026
Hard
Machine Learning EngineerNew GradImplement Optimal Bucket Batching
You are given an array lengths of K document lengths and an integer G representing the number of available GPUs. A batch is assigned to one GPU, and e...
Coding & Algorithms
2
0
35 people solved
Apr 27, 2026
Medium
Machine Learning EngineerSenior+ LockedDelete a Character From Cover
This question evaluates proficiency in string manipulation, interval arithmetic, and data-structure updates with attention to index mapping and edge-c...
Coding & Algorithms
11
0
84 people solved
Feb 7, 2026
Medium
Software Engineer LockedSolve Three Coding Interview Problems
This set of problems evaluates competency in algorithmic problem-solving, including merging sorted arrays with duplicate elimination, reasoning about ...
Coding & Algorithms
2
0
39 people solved
Feb 7, 2026
Medium
Software Engineer LockedDesign an online coding contest platform
This question evaluates a candidate's ability to design scalable, reliable, and secure distributed systems for real-time, event-driven workloads, cove...
System Design
4
0
66 people solved
Feb 7, 2026
Medium
Software Engineer LockedDetect and remove matched words in a char stream
This question evaluates understanding of online stream processing, substring matching, and the use of efficient data structures and algorithms for rea...
Coding & Algorithms
36
0
240 people solved
Feb 7, 2026
Easy
Data Scientist LockedHow would you design an ETA prediction system?
This question evaluates a data scientist's capability to design an end-to-end ETA prediction system, testing competencies in machine learning modeling...
Machine Learning
10
0
105 people solved
Feb 6, 2026
Easy
Data Scientist LockedHow to experiment on ETA reduction
This question evaluates a data scientist's competence in causal inference, A/B test design, metric selection, and diagnosing observational confounding...
Analytics & Experimentation
16
0
205 people solved
Feb 6, 2026
Hard
Software EngineerDesign VPC, IP plan, management, storage, SSO
Design VPC, IP plan, management, storage, SSO System Design: Multi‑Layer VPC, IP Planning for 2,000 Servers, Fleet Management, Shared Storage, and SSO...
System Design
6
0
50 people solved
Aug 10, 2025
Medium
Software EngineerWalk through your resume and impacts
Walk through your resume and impacts Behavioral Prompt: Walk Through Your Resume (Technical Screen) You are interviewing for a Software Engineer role ...
Behavioral & Leadership
15
0
125 people solved
Aug 10, 2025
Medium
Software EngineerFind k closest values in a BST
Find k closest values in a BST Given a binary search tree with n nodes and a real target t, return k node values whose distances to t are smallest. Im...
Coding & Algorithms
5
0
106 people solved
Aug 10, 2025
Medium
Software EngineerExplain Python internals and practices
Explain Python internals and practices Answer the following Python deep-dive questions: - Explain the Global Interpreter Lock (GIL) and its impact on ...
Coding & Algorithms
3
0
37 people solved
Aug 10, 2025
Medium
Software EngineerSolve three coding tasks: binary search, tree path, subarray
Solve three coding tasks: binary search, tree path, subarray Solve the following coding tasks: 1) In a sorted array, every value appears exactly twice...
Coding & Algorithms
7
0
58 people solved
Aug 10, 2025