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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
Walmart Labs logo
Walmart Labs
Medium
Product Manager

Guesstimate: How Big Is the Amazon Prime Video Business?

You are asked for a back-of-the-envelope estimate of how big Amazon's Prime Video service is. Pick the measure you will report and justify it, build t...

Product / Decision MakingEstimation & Market Sizing
0
0
9 people solved
Dec 31, 2024
Pinterest logo
Pinterest
Medium
Data Scientist

Design Algorithm to Minimize Payments in Expense-Sharing App

Scenario Expense-sharing app needs to settle debts among friends after a trip. Question Given a list of transactions (payer, payee, amount), design an...

Coding & Algorithms
34
0
134 people solved
Jul 12, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Implement four data-structure/string geometry tasks

This multi-part question evaluates manual big-integer string multiplication, robust parsing and tokenization of complex log formats, computational geo...

Coding & Algorithms
6
0
86 people solved
Feb 12, 2026
DoorDash logo
DoorDash
Medium
Machine Learning Engineer

Find closest value to a target in a BST

Problem Given the root of a binary search tree (BST) and a floating-point number target, return the value in the BST that is closest to target. If the...

Coding & AlgorithmsTrees
11
0
121 people solved
Oct 17, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Solve sampling and streaming tasks

This question evaluates algorithmic problem-solving, data structure design, probabilistic reasoning for weighted random selection, sliding-window stri...

Coding & Algorithms
3
0
49 people solved
Sep 4, 2025
Cisco logo
Cisco
Medium
Product Manager

Cisco product design: rethink how customers unlock licensed features on devices

You are a product manager at Cisco. Today, a customer who buys a hardware device, such as a router or a switch, unlocks the licensed software features...

Product Design & StrategyProduct Design & ImprovementRequirements & Launch Execution
1
0
11 people solved
Nov 11, 2025
Google logo
Google
Medium
Product Manager

Explaining Technical Work to Non-Technical Stakeholders

Explain Technical Work to a Non-Technical Stakeholder Explain a recent project you led in plain language for a non-technical audience. The interviewer...

Behavioral & LeadershipCommunication & Stakeholders
22
0
113 people solved
Jul 4, 2025
PayPal logo
PayPal
Medium
Software Engineer

Assess HashMap vs ConcurrentHashMap

Assess HashMap vs ConcurrentHashMap Is Java's HashMap thread-safe? Explain why or why not. How does ConcurrentHashMap achieve thread safety and perfor...

Coding & Algorithms
9
0
91 people solved
Aug 7, 2025
Point72 logo
Point72
Hard
Data Scientist

Price a coin-doubling game rationally

Coin-Doubling (St. Petersburg) Game: EV, Log-Utility Pricing, Kelly Staking, and House Cap Context and assumptions - Single play: You buy one ticket t...

Statistics & MathProbabilityPuzzles & Brainteasers
9
0
117 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Find the Minimum Window Containing a Multiset of Characters

Return the shortest contiguous source substring containing every target character with the required multiplicity. Handle repeated and case-sensitive c...

Coding & Algorithms
3
0
27 people solved
May 22, 2026
Booking.com logo
Booking.com
Medium
Product Manager

Refining a calendar app's sync-failure user story for backlog readiness

You are the product manager for a calendar app, and your team is focused on improving error handling. This user story is up for refinement: > As a use...

Product / Decision MakingRequirements & Launch Execution
1
0
11 people solved
Jul 11, 2024
Amazon logo
Amazon
Medium
Software Engineer

Solve sliding-window and heap problems

Question Design an algorithm using a sliding window to compute the maximum sum of any contiguous subarray of length k; explain time- and space-complex...

Coding & Algorithms
31
0
148 people solved
Aug 4, 2025
Capital One logo
Capital One
Medium
Data Scientist

Maintain target margin with fixed costs

Target Profit Margin With a Mixed-Product Portfolio Context You sell two burger products (classic and vegan) at the same price but with different unit...

Statistics & Math
5
0
65 people solved
Oct 13, 2025
DocuSign logo
DocuSign
Medium
Product Manager

Designing a Two-Sided Integration Marketplace for DocuSign

You are a product manager at DocuSign. The company wants a place where customers can discover and install apps that extend DocuSign or connect it to t...

Product Design & StrategyPlatform & API ProductsGrowth & Monetization
0
0
6 people solved
Mar 16, 2025
TikTok logo
TikTok
Easy
Data Scientist

Calculate Expected Draws for X > 0.8 in Uniform(0,1)

Calculate Expected Draws for X > 0.8 in Uniform(0,1) Scenario Quick probability check during a first-round screen to gauge statistical intuition. Ques...

Statistics & Math
10
1
87 people solved
Aug 4, 2025
Upstart logo
Upstart
Medium
Data Scientist

Calculate User Revenue and Session Duration in Python

events +---------+------------+---------+---------------------+ | user_id | event_type | revenue | timestamp | +---------+------------+-----...

Data Manipulation (SQL/Python)
5
0
47 people solved
Aug 4, 2025
Nash AI logo
Nash AI
Medium
Software Engineer

Implement Minesweeper click and print

Implement Minesweeper click and print Implement the Minesweeper click(row, col) operation and a function to print the board. Rules: ( 1) If the clicke...

Coding & Algorithms
11
0
88 people solved
Jul 26, 2025
Coinbase logo
Coinbase
Medium
Product Manager

Explaining a Hard Technical Concept to a Non-Specialist Listener

An interviewer for a product-manager role at a crypto exchange asks you to pick a technically demanding idea and explain it to them on the spot. You c...

Behavioral & LeadershipCommunication & Stakeholders
0
0
8 people solved
Oct 15, 2024
TikTok logo
TikTok
Hard
Data Scientist

Evaluate Home-Feed Diversity's Impact on User Engagement Metrics

Evaluate Home-Feed Diversity's Impact on User Engagement Metrics You run a personalized home feed where each post is tagged with one or more topics, s...

Analytics & Experimentation
86
0
353 people solved
Jul 12, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

[SQL] Job Ad Metrics with Applicant Filter

Job Ad Metrics Analysis Task Table Structure Table: job_activity job_id INT candidate_id INT activity_type VARCHAR -- can be 'view' or 'apply' Require...

Data Manipulation (SQL/Python)
14
0
97 people solved
Apr 23, 2025
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