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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
LinkedIn logo
LinkedIn
Medium
Software Engineer

Compute inverse-depth weighted sum of nested lists

Inverse-Depth Weighted Sum of a Nested List You are given a nested list of integers. Each element is either: - an integer, or - another nested list. D...

Coding & AlgorithmsTreesBacktracking & Recursion
29
1
185 people solved
Feb 11, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Find the Kth Smallest Value in a Binary Search Tree

Build a binary search tree from a breadth-first serialization and return its kth smallest value. The prompt defines one-based rank, explicit nulls, im...

Coding & Algorithms
5
0
76 people solved
Aug 26, 2026
Pinterest logo
Pinterest
Medium
Product Manager

Owning a Flawed Decision and Showing How the Lesson Improved a Later Call

Describe a decision you made that turned out to be a poor one, what you took away from it, and a later decision where that lesson led you to a better ...

Behavioral & LeadershipFailure & LearningAmbiguity & Decision Making
1
0
12 people solved
Mar 15, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Product Manager

Corporate Treasurer Pain Points and Priorities for Transaction Banking Products

What does a corporate treasurer need today, and how do those needs differ from what the role used to require? `hint Start from the job List what a tre...

Product Design & StrategyProduct SenseUser Research & Discovery
0
0
6 people solved
Aug 26, 2026
IBM logo
IBM
Medium
Product Manager

Getting Up to Speed Fast on an Unfamiliar Domain Under a Deadline (PM Behavioral)

Tell me about a time you had to get up to speed on an unfamiliar subject in very little time. How did you go about it, and what was the result? `hint ...

Behavioral & LeadershipSelf-Awareness & Growth
0
0
7 people solved
Apr 22, 2026
Bitkernel logo
Bitkernel
Medium
Software Engineer

Choose best prompt for AI code debugging

When using AI tools such as ChatGPT to help debug code, which prompting approach is generally most effective? Options: - A. Directly paste the complet...

Software Engineering FundamentalsAI-Assisted Development
5
1
110 people solved
Oct 24, 2025
Uber logo
Uber
Hard
Software Engineer

Design real-time driver heatmap system

System Design: Real-Time Driver Heatmap and Top-K Hottest Cells Context You are building a real-time driver heatmap for a ride-hailing platform that v...

System DesignReal-Time SystemsGeo & Delivery Systems
97
0
1050 people solved
Aug 1, 2025
Airbnb logo
Airbnb
Medium
Data ScientistSenior+

Turn a Vague Retention Request into a Metric and SQL at a Home-Sharing Marketplace

A two-sided home-sharing marketplace, where guests book stays at listings that hosts publish, is hiring an analytics lead. In a case-oriented SQL roun...

Data Manipulation (SQL/Python)Metrics & KPIsSegmentation & Cohort Analysis
0
0
2 people solved
Aug 1, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Detect runs and answer suffix queries

Given an array of comparable elements a[0..m-1] and an integer N: 1) Write a function that returns the maximum length of any run of consecutive equal ...

Coding & AlgorithmsTrees
28
0
375 people solved
Jul 28, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluating the Impact of Duplicate and Stolen Posts on a Content Platform

Evaluating the Impact of Duplicate and Stolen Posts on a Content Platform You are a data scientist at a large user-generated-content platform (think a...

Analytics & Experimentation
4
0
47 people solved
Feb 1, 2026
Uber logo
Uber
Medium
Software Engineer

Find shortest jumps in circular array

You are given a circular array arr of length n. From index i, you may jump exactly arr[i] steps either to the left or to the right (wrapping around th...

Coding & AlgorithmsGraphs
14
0
143 people solved
Jan 28, 2026
Google logo
GoogleMetaAmazon
Easy
Software Engineer

Sum Subarrays Defined by Each Ending Value

Problem Given an integer array nums of length n, associate one subarray with every index i: - Its right endpoint is i. - Its left endpoint is start = ...

Coding & AlgorithmsArrays & Strings
1
0
10 people solved
Roblox logo
Roblox
Hard
Software Engineer

Design resource loader and ROS-like pub/sub

System Design: Resource Loader and ROS-like Publish/Subscribe Context You are designing two foundational systems for a large-scale, real-time interact...

System DesignMessaging & Event-DrivenSystem Design Fundamentals
27
0
220 people solved
Sep 6, 2025
Rippling logo
Rippling
Hard
Software Engineer Locked

Design a hotel search and booking system

This question evaluates a candidate's ability in large-scale system design, covering distributed architecture, data modeling for hotels and availabili...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
38
0
424 people solved
Dec 8, 2025
Amazon logo
Amazon
Medium
Software Engineer

Maximize protected population with one-step guard shifts

There are n cities in a line (1-indexed). You are given: - population[1..n]: population of each city - unit: a binary string of length n, where unit[i...

Coding & AlgorithmsGreedyArrays & Strings
36
0
244 people solved
Jan 27, 2026
Capital One logo
Capital One
Medium
Data Scientist

Debug and test a Python function in venv

Consider the Python snippet below. """ import math def accumulate(nums, start=0, cache={}): total = start for n in nums: if n % 2 == 0: nums.appen...

Coding & AlgorithmsDebuggingTesting & Quality
12
0
160 people solved
Oct 13, 2025
Wayfair logo
Wayfair
Medium
Software Engineer Locked

Design the Domain Model for an Automated Parking Garage

Design the application model for an automated parking garage. Make the API or object boundaries explicit, then cover invariants, edge cases, testing s...

Software Engineering Fundamentals
2
0
29 people solved
Jul 29, 2026
Visa logo
Visa
Medium
Software Engineer I Locked

Explain HashMap and ConcurrentHashMap Internals

Explain contemporary Java HashMap internals, including hashing, buckets, collision chains, treeification, resizing, and retrieval. Then contrast its c...

Software Engineering Fundamentals
2
0
35 people solved
Aug 8, 2026
xAI logo
xAI
Medium
Software Engineer

Explain ACID and transactions

ACID Transactions: Definitions, Enforcement, Isolation Levels, and Example Context You are designing a service backed by a relational database that su...

System DesignTransactions & IsolationDatabase Internals
16
0
220 people solved
Aug 12, 2025
Affirm logo
Affirm
Medium
Software Engineer Locked

Describe a Mentoring Experience and Its Outcome

Describe a sustained mentoring relationship that helped another engineer become more independent. Explain how you diagnosed their needs, adapted an in...

Behavioral & Leadership
7
0
64 people solved
Jul 6, 2026
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