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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
Upstart logo
Upstart
Medium
Software Engineer

Implement Three Assessment Functions

An online assessment contains three independent programming tasks. Implement each function clearly and efficiently. 1. Compute coordinate bounds - ...

Coding & Algorithms
10
0
86 people solved
Apr 20, 2026
Pinterest logo
Pinterest
Medium
Machine Learning Engineer Locked

Solve five hard algorithm problems

This set of problems evaluates algorithm design and problem-solving skills across array manipulation, range-update techniques, load-balancing and part...

Coding & AlgorithmsArrays & StringsGreedy
10
0
160 people solved
Mar 8, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Design an Extensible Simulation Engine

This question evaluates object-oriented design, state modeling, API design, modularity, testability, and the ability to architect an extensible simula...

Software Engineering FundamentalsSimulation & State MachinesLow-Level Design (OOP)
13
0
194 people solved
Apr 3, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Explain the Most Complex Project You Have Delivered

Explain a complex engineering project through personal ownership, constraints, alternatives, execution challenges, measurable evidence, and lessons le...

Behavioral & LeadershipProject Deep Dive
3
0
26 people solved
Aug 30, 2026
Wayfair logo
Wayfair
Medium
Product Manager

Raising Review Coverage, Usefulness and Trust for Wayfair's Furniture Catalog

You are a product manager at Wayfair, the online retailer of furniture and home goods. How would you improve the customer reviews and ratings shown on...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
6 people solved
Aug 14, 2026
Stripe logo
Stripe
Medium
Software Engineer

Implement Luhn-based card validation and inference

Question Implement a set of utilities for credit-card validation and inference using the Luhn checksum algorithm and standard brand patterns. Brand pa...

Coding & Algorithms
28
1
369 people solved
Sep 6, 2025
Google logo
Google
Medium
Product Manager

Google Pixel Strategy: Winning Over Gen Z Smartphone Buyers

You are the product manager for Google's Pixel phones. Your goal is to make Pixel the phone that people in Gen Z choose first. Lay out your strategy: ...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
1
0
18 people solved
Jun 10, 2026
Capital One logo
Capital One
Medium
Software Engineer

Design a cross-region event processing platform

Scenario Design a cross-region event processing platform that ingests events from producers, stores them durably, and delivers them to multiple consum...

System DesignMessaging & Event-DrivenFault Tolerance & Failover
24
0
281 people solved
Dec 25, 2025
Uber logo
Uber
Medium
Software Engineer

Behavioral: your most complex project, a conflict you resolved, and a failure

The hiring manager asked several standard behavioral questions. Answer each part with a specific example from your own experience. Clarifying Question...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
2
0
24 people solved
Jul 25, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

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...

Software Engineering FundamentalsReliability & SREDebugging
43
0
332 people solved
Jan 31, 2026
Robinhood logo
Robinhood
Medium
Software EngineerSenior+

Design an Order Execution System for Market and Limit Orders with Cancellation

Design the order execution system for a retail brokerage. Users can place two kinds of orders to buy or sell a stock: - a market order, which should e...

System DesignTrading SystemsDistributed Transactions & Idempotency
5
0
61 people solved
Feb 11, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Detect duplicate files efficiently

You are given access to a very large file system containing file paths and read access to file contents. Design an algorithm to identify groups of fil...

Coding & AlgorithmsFile & Media Storage
64
1
1140 people solved
Sep 6, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Implement an Idempotent Versioned Database Update

Design an API operation that updates one database record safely under retries and concurrent writers. Make the API or object boundaries explicit, then...

Software Engineering Fundamentals
15
0
115 people solved
Aug 9, 2026
Google logo
Google
Medium
Data Scientist

Compute precision–recall curve on imbalanced data

You receive a CSV with columns: actual_label ∈ {0,1} and predicted_prob ∈ [0,1]; the positive class rate is ≈5%. a) Which evaluation metrics would you...

Coding & AlgorithmsModel EvaluationML Coding
19
0
144 people solved
Oct 13, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer Locked

Two Sum — Indices Summing to a Target

This question evaluates a candidate's ability to design an efficient array-searching algorithm that maps values to indices under a target-sum constrai...

Coding & Algorithms
6
0
64 people solved
Jun 9, 2026
Atlassian logo
Atlassian
Medium
Software Engineer

Find LCA in organization tree

Find LCA in organization tree Given an organizational hierarchy tree, return the lowest common organization (parent node) for two or more employees (≥...

Coding & AlgorithmsTreesTesting & Quality
34
2
243 people solved
Aug 4, 2025
Google logo
GoogleMetaAmazon

Also asked at Amazon, Microsoft, Innovaccer, Bloomberg

Easy
Software Engineer

Seconds Until a Chosen Ticket Buyer Finishes

Problem People initially line up in array order, and person i wants to buy tickets[i] tickets. Each purchase takes exactly one second and buys one tic...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
1
0
7 people solved
Google logo
GoogleMeta
Medium
Software Engineer

Largest Integer with a Maximum Digit-Square Score

Problem You are given positive integers num and sum. Consider positive integers with exactly num decimal digits whose digits add up to exactly sum. An...

Coding & AlgorithmsGreedyMath & Number Theory
0
0
6 people solved
Vanta logo
Vanta
Medium
Software Engineer

Order Classes by Prerequisites with Recursive DFS

Order Classes by Prerequisites with Recursive DFS Implement class_order(classes, prerequisites) using recursive depth-first search. classes contains d...

Coding & Algorithms
13
0
129 people solved
May 3, 2026
Meta logo
MetaAndurilAmazonGoogle

Also asked at Amazon, Google

Medium
Software Engineer

List Buildings That Clear Every Building to Their Right

Problem Buildings have heights heights, and the ocean lies to their right. A building sees the ocean exactly when every building to its right is stric...

Coding & AlgorithmsArrays & Strings
0
0
10 people solved
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