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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
PLTCHK testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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."

PLTCHK testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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
StubHub logo
StubHub
Medium
Software Engineer

Explain a resume project end-to-end

End-to-End Project Walkthrough (Technical Screen — Software Engineer) Prompt Walk me through one project on your resume end-to-end. Please cover 1. Pr...

Behavioral & LeadershipProject Deep Dive
11
0
99 people solved
Sep 6, 2025
PayPal logo
PayPal
Easy
Data Scientist

Evaluate smart cart idea and design experiment

Question Instacart is partnering with a local grocery store to introduce a smart cart in the physical store. While shopping in the partner store, a cu...

Analytics & Experimentation
6
0
74 people solved
Oct 10, 2025
Two Sigma logo
Two Sigma
Medium
Data Scientist Locked

Evaluate a Piecewise Linear Function

This question evaluates understanding of linear interpolation, numerical reasoning with ordered 2D points, and input validation when computing values ...

Coding & Algorithms
8
0
68 people solved
Mar 3, 2026
Amazon logo
Amazon
Medium
Software Engineer

Implement LRU cache with O(1) ops

Implement LRU cache with O(1) ops Design and implement a fixed-capacity cache supporting get(key) -> value and put(key, value) in O( 1) average time. ...

Coding & Algorithms
12
0
135 people solved
Aug 9, 2025
Google logo
Google
Medium
Machine Learning Engineer

Answer conflict, failure, and proud project questions

Behavioral questions Answer the following behavioral prompts using real examples from your experience: 1. Conflict: Tell me about a time you had a con...

Behavioral & LeadershipConflict & CollaborationFailure & Learning
9
0
134 people solved
Jan 22, 2026
OpenAI logo
OpenAI
Hard
Data Scientist Locked

Measure free-month promotion impact

This question evaluates causal inference and experimentation skills, including randomized design and estimand framing, metric and ROI attribution, han...

Analytics & ExperimentationExperiment Design (A/B Testing)Business Case Analysis
21
0
186 people solved
Jan 15, 2026
Airbnb logo
Airbnb
Easy
Software Engineer Locked

Design an In-Memory Cloud Storage Service with Users, Backups, and Restore

Design an in-memory cloud storage service with globally named files, user quotas, largest-file queries, account merges, and per-user backup and restor...

Software Engineering Fundamentals
9
0
92 people solved
Aug 17, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer

Calculate minutes between two time strings

Given two times t1 and t2 in "HH:MM" 24-hour format on the same day with t2 > t1, compute the difference in minutes. Show how you parse the strings, c...

Data Manipulation (SQL/Python)Parsing & Interpreters
7
0
123 people solved
Aug 8, 2025
Oracle logo
Oracle
Medium
Software EngineerSenior+

Simulate an LFU cache that evicts the least-used key, breaking ties by recency

Implement a least-frequently-used (LFU) cache with a fixed capacity and simulate a sequence of operations on it. The cache maps integer keys to intege...

Coding & AlgorithmsData Structure Design
1
0
15 people solved
Apr 3, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Compute nearest dashmart and busiest assignments

Compute nearest dashmart and busiest assignments You are given an m x n grid of characters where 'D' marks a dashmart, 'X' marks an impassable cell, a...

Coding & AlgorithmsGrids & Matrices
10
0
104 people solved
Jul 17, 2025
Meta logo
Meta
Medium
Machine Learning Engineer

Generate unique permutations with duplicates

Given an array of integers that may contain duplicates, generate all unique permutations. Ensure no duplicate permutations are returned even if some v...

Coding & Algorithms
10
0
76 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Product Manager

Designing a Marketplace-Safe Experiment for a New Uber Driver Feature

Uber wants to test a new feature built for its drivers. As the product manager, how would you design an A/B test that gives a trustworthy read on the ...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
0
0
12 people solved
Aug 16, 2026
Capital One logo
Capital One
Medium
Software Engineer

Solve powers, phases, grid pops, and swaps

Solve the following four problems: 1) Count powers of k in an array: Given an array of positive integers nums and an integer k >= 1, return how many e...

Coding & AlgorithmsMath & Number TheoryGrids & Matrices
18
0
196 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Product Manager

Amazon Leadership Principles Behavioral Scenarios

Question Amazon product manager onsite loop, behavioral round. Prepare concise STAR stories for the situations below. Interviewers each pick two or th...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
23
1
232 people solved
Jul 4, 2025
Amazon logo
Amazon
Medium
Software EngineerIntern

Find Most Frequent Values

Given an integer array nums and an integer k, return the k distinct values that occur most frequently in nums. The result may be returned in any order...

Coding & Algorithms
7
0
58 people solved
Mar 18, 2025
Instacart logo
Instacart
Medium
Product Manager

Measuring Google Flights: North Star, Search-to-Booking Funnel and Guardrails

How would you decide whether flight search on Google Flights is succeeding, and which metrics would you use to measure it? `hint Follow the traveler p...

Analytics & ExperimentationMetrics & KPIsUser Behavior & Funnels
1
0
10 people solved
Nov 16, 2025
Chime logo
Chime
Medium
Data Scientist

Write SQL for noisy A/B launch metrics

PostgreSQL. Today is 2025-09-01. You’re given the following schema and toy samples: users(user_id INT, country TEXT, signup_date DATE, marketing_chann...

Data Manipulation (SQL/Python)
3
0
45 people solved
Oct 13, 2025
Safeway logo
Safeway
Medium
Product Manager

Supermarket Chain Product Design for an Underserved Niche Shopper Segment

You are a product manager at a large supermarket chain; use Safeway as the concrete example. Your task is to build a product that serves niche markets...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
7 people solved
Aug 12, 2026
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Clean OCR data and build an LLM dataset

This question evaluates competency in OCR data cleaning and normalization, dataset engineering for LLM fine-tuning, quality filtering, and evaluation ...

Machine LearningData Cleaning & WranglingAnnotation & Label Quality
9
0
128 people solved
Feb 11, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Design an extensible expense rule evaluator

This question evaluates system-design and API/interface skills for rule engines, focusing on data modeling, extensibility, maintainability, and rule/r...

Software Engineering FundamentalsLow-Level Design (OOP)
41
0
499 people solved
Feb 12, 2026
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