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Master your tech interviews with 18,000+ real questions from top companies.

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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
Gofundme logo
Gofundme
Easy
Software Engineer Locked

Validate a bracket string

This question evaluates a candidate's ability to reason about paired-token matching and nested structure correctness in strings, measuring skills in p...

Coding & Algorithms
3
0
42 people solved
Jan 19, 2026
Intersystems logo
Intersystems
Easy
Software EngineerNew Grad

Teach a networking concept to a beginner

Scenario You previously worked as a tutor/TA for a computer networking course. Prompt Pretend you are teaching a short mini-lesson (3–5 minutes) to a ...

Behavioral & Leadership
12
0
92 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Software Engineer

Compare two string linked lists

Question Given two singly linked lists where each node stores one character as a string, determine whether the sequences of characters represented by ...

Coding & Algorithms
9
0
43 people solved
Jul 29, 2025
TikTok logo
TikTok
Medium
Data Scientist

Analyze Posting Behavior by Cohort and Date

creator_post +------------+---------+------+ | post_date | user_id | post | +------------+---------+------+ | 2023-01-01 | 111 | 1 | | 2023-01...

Data Manipulation (SQL/Python)
4
0
30 people solved
Aug 4, 2025
Envoy logo
Envoy
Easy
Software Engineer

Design a shopping cart with coupons and tax

Design an object-oriented shopping cart module for an e-commerce system. Requirements: - A cart can add items and update item quantities. - The cart s...

Software Engineering FundamentalsLow-Level Design (OOP)
13
0
128 people solved
Mar 11, 2026
Snapchat logo
Snapchat
Medium
Data Scientist

Influence Cross-Functional Teams Without Formal Authority

Influence Cross-Functional Teams Without Formal Authority This is a behavioral and leadership prompt for a Snapchat data scientist onsite. The scenari...

Behavioral & Leadership
24
0
94 people solved
Jul 12, 2025
Capital One logo
Capital One
Medium
Data Scientist

Explain Python Virtual Environment Setup and Function Analysis

Scenario Technical screen where candidate and interviewer jointly walk through Python code snippets used in a data-science repository. Question Show h...

Coding & Algorithms
58
0
35 people solved
Jul 12, 2025
Rippling logo
Rippling
Medium
Software Engineer

Find minimum of unknown convex function

You are given access to an unknown univariate convex function \(f(x)\) defined on a closed interval \([L, R]\) on the real line. - You cannot see the ...

Machine LearningBinary Search
9
0
149 people solved
Dec 8, 2025
PayPal logo
PayPal
Medium
Data Scientist

Generate Bigrams Using Python List Comprehension and Zip

Scenario Live Python exercise: generate all bigrams from an input string and iteratively optimize the solution. Question Write a Python function that ...

Coding & Algorithms
15
0
109 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Product Manager

Meta Payments in India and Southeast Asia: success metrics as average ticket size falls

You are the product manager for Meta Payments. Since Meta Payments launched in India and Southeast Asia, the average amount per transaction has fallen...

Analytics & ExperimentationMetrics & KPIsBusiness Case Analysis
0
0
5 people solved
Jan 7, 2026
Capital One logo
Capital One
Easy
Data Scientist

Find minimal a for PSD of 3x3 matrix

PSD threshold for a 3×3 matrix with constant off-diagonal entries You are given the symmetric matrix with ones on the diagonal and a constant real val...

Statistics & Math
4
0
63 people solved
Oct 13, 2025
Medium
Data Scientist

Implement multiplication without using the multiplication operator

Implement int multiply(int a, int b) without using * or /. You may use +, −, bitwise operators, and shifts. Requirements: - Handle negatives, zero, an...

Coding & Algorithms
5
0
70 people solved
Oct 13, 2025
Moloco logo
Moloco
Hard
Software Engineer

Find single element when others repeat k times

You are given a sorted array of integers nums in non-decreasing order, and an integer k ≥ 2. Every value in nums appears exactly k times in a row, exc...

Coding & Algorithms
11
0
83 people solved
Nov 9, 2025
Uber logo
Uber
Medium
Product Manager

Uber Marketplace Fix: A Plan to Shrink Trip Cancellations From 25% to 5%

You are a product manager at Uber. Today 25% of trips are cancelled, and you have been asked to get that figure down to 5%. What would you do? Walk th...

Product Design & StrategyProduct Design & ImprovementMetric Diagnostics
1
0
10 people solved
Apr 23, 2026
Microsoft logo
Microsoft
Hard
Software Engineer

Design an image upload/download service

System Design: Image Upload and Download Service Context Design a production-grade image service used by web and mobile clients. The service must supp...

System DesignFile & Media StorageAPI Design
15
0
130 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Machine Learning Engineer Locked

Find length of longest common subsequence

This question evaluates understanding of dynamic programming, string algorithms, and algorithmic problem-solving skills related to sequence comparison...

Coding & Algorithms
9
0
71 people solved
Jan 22, 2026
SoFi logo
SoFi
Easy
Software Engineer Locked

Find maximum-occurring character in a string

This question evaluates proficiency in string manipulation and frequency counting, including correct handling of tie-breaking by earliest first occurr...

Coding & AlgorithmsArrays & Strings
6
0
82 people solved
Jan 7, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Find and remove duplicate files

Given a directory tree that may not fit in memory, detect and optionally remove duplicate files. Define the algorithm, including how you handle very l...

Coding & AlgorithmsFile & Media StorageOperating Systems
35
0
267 people solved
Jul 26, 2025
Illumio logo
Illumio
Medium
Software Engineer Locked

Design a Moderated Messaging Service

This question evaluates system design competency, covering scalable distributed architecture, data modeling, API design, integration with external mod...

System Design
4
0
33 people solved
Oct 20, 2025
PayPal logo
PayPal
Medium
Data Scientist

Master A/B Testing: Key Concepts and Methodologies Explained

A/B Testing and Causal Inference: Core Concepts You are a data scientist interviewing for a role working on an online product. Demonstrate practical A...

Analytics & Experimentation
82
0
196 people solved
Jul 12, 2025
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