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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
Rippling logo
Rippling
Medium
Software Engineer Locked

Scale a rules engine for high traffic

This question evaluates understanding of scalable real-time system design, distributed architectures, consistency versus latency trade-offs, caching a...

System DesignSystem Design FundamentalsCaching
48
0
633 people solved
Feb 12, 2026
Google logo
GoogleMetaAmazonBloomberg

Also asked at Amazon, Bloomberg

Easy
Software Engineer

Digit Product Minus Digit Sum

Problem For positive integer n, multiply its decimal digits and separately add them. Return the product minus the sum. `cpp class Solution { public: ...

Coding & AlgorithmsMath & Number Theory
0
0
6 people solved
Apple logo
Apple
Medium
Software Engineer

Explain use cases for clock synchronizers

Assume you are designing a digital system with multiple clock domains. The clocks have different frequencies and unknown phase relationships. You can ...

Software Engineering Fundamentals
7
0
103 people solved
Dec 8, 2025
Zomato logo
Zomato
Medium
Product Manager

Zomato Product Sense: Helping Health-Minded Customers Find Better Dishes

You are a product manager at Zomato. Design a new feature that makes it easier for users to choose healthier options when they decide what and where t...

Product Design & StrategyProduct SenseMetrics & KPIs
1
0
9 people solved
May 19, 2026
Salesforce logo
Salesforce
Easy
Backend Engineer

Design an Elevator Control System

Design an object-oriented elevator control system for a building with multiple floors and multiple elevators. The system should support: - Hall reques...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
18
0
158 people solved
Dec 4, 2025
Meta logo
Meta
Medium
Data Engineer

Design a scalable dimensional model

Design a Dimensional Model for Transactional Analytics (Concrete Example Included) You are building a star-schema in a cloud data warehouse for near r...

System DesignDimensional ModelingStorage & Sharding
23
0
160 people solved
Sep 6, 2025
Virtu Financial logo
Virtu Financial
Medium
Data Scientist

Implement Connect Four Winner Detection

Implement a Connect Four-style game engine. The board has 6 rows and 7 columns. Two players alternate turns. On each turn, the current player chooses ...

Coding & Algorithms
16
0
113 people solved
Jan 22, 2026
Stripe logo
Stripe
Medium
Software EngineerSenior+

Architecture Deep-Dive: 15–20 Minute Past-Project Talk and Retrospective Follow-ups

One round of this staff-level loop is an architecture deep-dive on your own past work. You prepare a 15–20 minute presentation about a significant tec...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
2
0
34 people solved
Feb 22, 2026
Visa logo
Visa
Medium
Software Engineer I Locked

Count Cross-Array Pairs with a Target Sum

Count cross-array index pairs whose values add to a target, with duplicates contributing their full multiplicity. Use complementary frequency counts o...

Coding & Algorithms
4
0
47 people solved
Aug 8, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Design cloud storage system

Design cloud storage system In-Memory Cloud Storage: Design and Implement You are asked to design and implement an in-memory cloud storage system that...

System DesignLow-Level Design (OOP)
84
0
362 people solved
Jul 29, 2025
Apple logo
Apple
Medium
Machine Learning Engineer

Design App Store search

Design the search system for a mobile app marketplace similar to an app store. Users enter short queries such as 'photo editor', 'budget tracker', or ...

ML System Design
10
0
107 people solved
Dec 17, 2025
Turo logo
Turo
Medium
Software Engineer

Discuss complex project decisions and observability

Answer the following behavioral questions with concrete examples (use a structured format such as STAR): - Describe a recent AI-related project you wo...

Behavioral & Leadership
9
0
67 people solved
Feb 12, 2026
Box logo
Box
Medium
Software Engineer

Solve classic troubleshooting & algorithm tasks

Solve classic troubleshooting & algorithm tasks System failure troubleshooting: You can only SSH into the machine and the log file is huge. How would ...

Coding & AlgorithmsDebuggingConcurrency
41
0
313 people solved
Aug 4, 2025
INDmoney logo
INDmoney
Medium
Product Manager

Choose an investing app you like and design a social layer for its users

Name the investing app you like best, whether you use it for stocks, crypto or mutual funds, and explain what makes it your favorite. Then design a so...

Product Design & StrategyProduct SenseProduct Design & Improvement
1
0
8 people solved
Mar 8, 2026
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Design an image copyright-violation detection system

This question evaluates competency in designing scalable machine learning systems for image copyright detection, testing knowledge across computer vis...

ML System DesignComputer VisionEmbeddings & Vector Search
17
0
174 people solved
Feb 12, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer II Locked

Optimize User-and-Region Queries on a Million-Row Table

Design an evidence-driven optimization plan for user and regional queries on a million-row table, comparing indexes, partitioning, sharding, and repli...

System Design
7
0
78 people solved
Aug 8, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Implement debounced async autocomplete input

Implement debounced async autocomplete input Implement an Autocomplete Input Component (Frontend Technical Screen) Context Build an autocomplete input...

Software Engineering FundamentalsUI Components & AccessibilityJavaScript & TypeScript
15
0
112 people solved
Aug 1, 2025
Roku logo
Roku
Medium
Data Scientist

Write SQL for profit, growth, retention

Write ANSI-SQL (PostgreSQL preferred) for the tasks below. Assume all timestamps are UTC and that "today" = 2025-09-01. Schema: - products(product_id ...

Data Manipulation (SQL/Python)SQLBusiness Case Analysis
10
0
159 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Data Scientist

Implement rotated array binary search with duplicates

Given an integer array nums that is a non-decreasing array rotated an unknown number of times. Duplicates may exist. Implement a function that returns...

Coding & AlgorithmsBinary Search
10
0
119 people solved
Oct 13, 2025
The New York Times logo
The New York Times
Medium
Product Manager

Drawing Out Quiet Voices and Managing Dominant Ones in Team Brainstorms

In a product manager interview, you are asked how you encourage participation when you run a brainstorming session. Explain the specific things you do...

Behavioral & LeadershipConflict & Collaboration
0
0
10 people solved
Apr 7, 2026
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