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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
Shopify logo
Shopify
Easy
Data ScientistSenior+

Interpret a Checkout Redesign A/B Test: Conversion Up, Order Value Down, Revenue Flat

A commerce platform tested a redesigned one-page checkout (treatment) against its current multi-step checkout (control). Visitors who reached checkout...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
0
0
4 people solved
Oct 29, 2026
TikTok logo
TikTok
Medium
Product Manager

TikTok Cold Start: Using AI to Personalize a Brand-New Viewer's First Feed

You are a product manager at TikTok. A person who opens the app for the first time has no viewing history, so the For You feed has very little to pers...

Product Design & StrategyAI Product ManagementPersonalization
2
0
19 people solved
Oct 1, 2026
LinkedIn logo
LinkedIn
Easy
Data ScientistSenior+

Deciding Whether to Adjust the Home Feed After Complaints About Climate Summit Posts

A climate summit is taking place this month, and members of a professional social network are seeing many climate-related posts in their home feed. So...

Product / Decision MakingMetric DiagnosticsExperiment Design (A/B Testing)
0
0
4 people solved
Oct 25, 2026
Netflix logo
Netflix
Medium
Product Manager

Netflix Product Sense: Choosing the Job and Scope for an AI Agent

You are a product manager at Netflix. Propose an AI agent for the company and design it: decide who it serves and which job it takes on for them, desc...

Product Design & StrategyProduct SenseAI Product Management
1
0
10 people solved
Oct 6, 2026
Google logo
Google
Medium
Product Manager

Improving Unit Economics: Revenue and Cost-to-Serve Levers to Lift Per-User Profit

Pick any product you know well and explain how you would raise the profit it makes per user. `hint Profit is two numbers For the product you pick, sep...

Product Design & StrategyGrowth & MonetizationBusiness Case Analysis
0
0
7 people solved
Sep 26, 2026
Uber logo
UberEthosLinkedInGameskraft

Also asked at LinkedIn, Gameskraft

Hard
Software Engineer

Maximize Retained Tree Edge Weight with a Degree Limit

Problem You are given an undirected tree with n nodes labeled 0 through n - 1. Each row of edges is [u, v, w], describing an edge of weight w between ...

Coding & AlgorithmsTreesDynamic Programming
1
0
19 people solved
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Check Whether the Latest Move Creates Four in a Row

Check four-in-a-row through the latest move using four axes, bounded bidirectional counts, edge handling, and constant work for a fixed target length.

Coding & AlgorithmsGrids & Matrices
29
1
234 people solved
Sep 20, 2026
Infosys logo
InfosysBloombergGoogle

Also asked at Google, Meta, Amazon, Swiggy

Medium
Software Engineer

Minimize Travel Cost while Sending Half the People to Each City

Problem For each of2*n people, costs[i] gives the travel costs to cities A and B. Send every person to exactly one city with exactly n people in each....

Coding & AlgorithmsGreedySorting
1
0
10 people solved
MongoDB logo
MongoDB
Medium
Software EngineerSenior+

Design a small-scale metrics monitoring system for database instances in the cloud

Design a monitoring system that collects health and performance metrics from a modest number of database instances, think MongoDB deployments, running...

System DesignObservabilityBatch & Stream Processing
7
0
54 people solved
Jul 12, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Fix a Corrupted Bootloader Instruction

This question evaluates the ability to simulate instruction-level program execution, reason about control flow and mutable program state (instruction ...

Coding & AlgorithmsSimulation & State Machines
36
1
269 people solved
May 19, 2026
Optiver logo
Optiver
Hard
Software EngineerIntern

Optimize flight and cargo bookings for profit

OptiCargo: make the booking algorithm profitable You are given two streams/lists: - Flights you may attempt to book. Each flight has: - flight_id ...

Coding & AlgorithmsDynamic ProgrammingData Structure Design
278
1
2229 people solved
Dec 5, 2025
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Query Unique and Most-Frequent Keys in a Recent Event Window

Process a timestamp-ordered event stream while retaining only its most recent m arrivals. Answer historical-cutoff queries for distinct-key count and ...

Coding & AlgorithmsData Structure DesignStacks & Queues
27
0
220 people solved
Aug 3, 2026
Google logo
GoogleAmazonSamsung

Also asked at Samsung, Bloomberg, Microsoft, Meta

Easy
Software Engineer

Identify a Hidden Number from Comparison Replies

Identify a Hidden Number from Comparison Replies A service chooses one fixed integer from 1 through n, inclusive. Implement Solution.guessNumber(n) to...

Coding & AlgorithmsBinary Search
0
0
8 people solved
Amazon logo
AmazonGoogleBloomberg

Also asked at Bloomberg, Meta, Microsoft, TCS, Accenture, LinkedIn, Walmart Labs, Cisco

Medium
Software Engineer

Search a Rotated Array that May Repeat Values

Problem The integer array entries was formed from a non-decreasing array by choosing a split position r and moving the prefix before r after the remai...

Coding & AlgorithmsBinary Search
0
0
11 people solved
Render logo
Render
Medium
Software Engineer Locked

Rate Limit an API During a Traffic Attack

Design API rate limiting with token buckets, layered identities, endpoint costs, distributed-state tradeoffs, and measurable protection of legitimate ...

System DesignRate LimitingApplication Security
3
0
44 people solved
Sep 17, 2026
Amazon logo
AmazonDarwinbox
Medium
Software Engineer

Sort a Permutation Using a Bounded Sequence of Prefix Reversals

Problem A pancake flip chooses 1 <= k <= arr.length and reverses the first k values. Given a permutation of1 through n, return any sequence of flip le...

Coding & AlgorithmsSortingGreedy
1
0
13 people solved
Harvey logo
Harvey
Medium
Software Engineer Locked

Design Cloud File Storage

This question evaluates system design competency, specifically understanding storage architectures, the separation of metadata versus blob/object stor...

System DesignFile & Media StorageStorage & Sharding
44
1
440 people solved
May 2, 2026
Capital One logo
Capital One
Medium
Product Manager

Improve Capital One Shopping

You are a Product Manager discussing Capital One Shopping, a consumer product that helps online shoppers find deals, coupons, rewards, and price compa...

Product Design & StrategyProduct Design & ImprovementGrowth & Monetization
125
1
839 people solved
Jun 12, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Design a task management system with TTL

Task Management System (in-memory) Design and implement an in-memory task management system that supports tasks, users, task assignment with TTL (time...

Software Engineering FundamentalsLow-Level Design (OOP)
73
1
606 people solved
Feb 11, 2026
IBM logo
IBM
Medium
Software Engineer Locked

Count Tree Vertices with Pythagorean Distances

Count tree vertices whose positive distances to three fixed vertices form a Pythagorean triple, including distance ordering and large-tree edge cases.

Coding & AlgorithmsTreesGraphs
11
0
141 people solved
Aug 31, 2026
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