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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
Coinbase logo
Coinbase
Medium
Software Engineer

Implement debounced autocomplete component

Implement debounced autocomplete component Implement an Autocomplete Input Component Context Build a reusable web UI component that provides typeahead...

Software Engineering FundamentalsUI Components & AccessibilityJavaScript & TypeScript
14
0
119 people solved
Aug 4, 2025
Easy
Data ScientistIntern

Find two numbers that sum to target

Problem You are given an integer array nums (length n) and an integer target. Return the indices (i, j) such that: - i != j - nums[i] + nums[j] == tar...

Coding & Algorithms
10
0
83 people solved
Sep 28, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Investigate Falling Brand-Ad Spend

This question evaluates competency in data analysis, anomaly detection, causal inference, and diagnostic reasoning related to advertising performance,...

Analytics & Experimentation
3
0
63 people solved
Mar 12, 2026
Apple logo
Apple
Medium
Software Engineer

Implement deep clone for complex objects

Implement a deep-clone function for nested objects in JavaScript (or a language of your choice) without using JSON serialization or third-party librar...

Coding & AlgorithmsJavaScript & TypeScriptGraphs
14
0
140 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Diagnose why average waiting time increased

Diagnose Why Average Waiting Time Increased You are a Data Scientist supporting DoorDash logistics. Over the last 1 to 2 weeks, the business metric av...

Analytics & ExperimentationMetric DiagnosticsData Quality & Validation
16
0
155 people solved
Jul 7, 2025
Instacart logo
Instacart
Medium
Product Manager

Growing Instacart's Business Segment: Acquiring and Retaining Offices, Restaurants and Shops

You are a product manager at Instacart and own growth of the business customers segment. What strategies would you put in place to bring in, and keep,...

Product Design & StrategyGrowth & MonetizationProduct Strategy
0
0
6 people solved
Aug 14, 2025
DoorDash logo
DoorDash
Hard
Analytics Engineer

Allocate Support Cost and Diagnose Decline

You are the analytics partner for the Customer Support team at a food-delivery company. You have the following data: agents(agent_id, monthly_salary, ...

Analytics & ExperimentationMetric DiagnosticsMetrics & KPIs
7
0
95 people solved
Oct 12, 2025
Airbnb logo
Airbnb
Medium
Product Manager

Design a Pet and Animal Trading Platform for Farmers with Simple Checkout and Financing

You are a product manager asked to design an online marketplace for pets that is built for farmers. It should make transactions easy and should offer ...

Product Design & StrategyProduct SenseGrowth & Monetization
0
0
7 people solved
Apr 15, 2026
Pinduoduo logo
Pinduoduo
Medium
Software Engineer Locked

Generate a Matrix in Spiral Order

This question evaluates a candidate's ability to simulate array traversal and manage boundary conditions when filling a matrix in a specific geometric...

Coding & Algorithms
3
0
25 people solved
Jun 17, 2026
Meta logo
Meta
Hard
Data Scientist

Deploy multi-armed bandits safely

Online bandit with 3 variants, churn guardrail, and delayed conversions Context You are running an online experiment with 3 variants (including contro...

Machine Learning
11
0
93 people solved
Oct 13, 2025
Bobyard logo
Bobyard
Medium
Software Engineer

Design a client-side comment system

Scenario You are asked to build a client-side comment system (no backend required). The focus is on data modeling, UI behavior, and persistence. Requi...

System Design
8
0
71 people solved
Mar 1, 2026
Bloomberg logo
Bloomberg
Easy
Software Engineer

Solve word path in grid and trapped water

You are given two independent programming tasks. --- Problem 1: Check if a word exists in a 2D character grid You are given a 2D grid board of charact...

Coding & AlgorithmsBacktracking & RecursionTwo Pointers & Sliding Window
18
0
195 people solved
Nov 25, 2025
Lyft logo
Lyft
Medium
Product Manager

Designing a Lyft Service That Gets Patients to and from Medical Care

You are a product manager at Lyft. Design a product that helps patients with their transportation needs. Explain which patients and trips you would se...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
8 people solved
Aug 6, 2026
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
195 people solved
Jul 12, 2025
Stripe logo
Stripe
Medium
Product Manager

Metric Diagnosis Case: Investigating a 15 Percent Jump in Cancelled Orders

Order cancellations on your platform have gone up by 15 percent. As the product manager, explain how you would find the root cause: what you would che...

Analytics & ExperimentationMetric Diagnostics
1
0
11 people solved
Oct 26, 2024
TikTok logo
TikTok
Medium
Product Manager

Behavioral Fit & Leadership at TikTok

Behavioral Interview Prompt: Product Manager Fit and Leadership at TikTok You are preparing for a TikTok Product Manager interview focused on behavior...

Behavioral & LeadershipMotivation & FitSelf-Awareness & Growth
19
0
142 people solved
Jul 4, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Product Strategy: Finding and Sequencing Revenue Streams for a Park

As a product manager, you have been handed the job of making money from a park. How would you approach it? Explain what you would want to know first, ...

Product Design & StrategyGrowth & MonetizationMetrics & KPIs
1
0
9 people solved
Apr 12, 2026
Apple logo
Apple
Hard
Data Scientist

Autocorrect Enablement Rate by Keyboard Language for One Day

A device maker's keyboard team logs daily keyboard usage and each device's keyboard settings. For the day 2025-06-02, compute the autocorrection enabl...

Data Manipulation (SQL/Python)SQL
0
0
3 people solved
May 2, 2026
Amazon logo
Amazon
Hard
Software Engineer

Design real-time top-K products service

Question Design a real-time service that ingests a continuous stream of purchase events with the schema (customer_id, item_id, timestamp) and continuo...

System DesignBatch & Stream ProcessingData Ingestion & CDC
13
0
154 people solved
Sep 6, 2025
Intuit logo
Intuit
Hard
Data Scientist Locked

Decide when to model courier ETA

This question evaluates a candidate's competency in machine learning product decisions—covering target definition, dispatch-time feature design, offli...

Machine Learning
10
0
91 people solved
Oct 13, 2025
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