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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
Uber logo
Uber
Medium
Software Engineer

Tell about a past project and impact

Tell about a past project and impact Behavioral: Past Project Deep Dive You are in a Software Engineer onsite interview. Share a past project you led ...

Behavioral & LeadershipProject Deep DiveOwnership & Execution
19
0
172 people solved
Jul 15, 2025
Google logo
Google
Medium
Product Manager

Diagnose the speed gap between Gmail inbox search and Google web search

Searching your mailbox in Gmail often feels slower than running a Google web search, even though one inbox is a tiny fraction of the size of the web. ...

System DesignTechnical Tradeoffs for PMsSearch & Feed Systems
1
0
13 people solved
Feb 17, 2024
Google logo
Google
Medium
Product Manager

Ship or Kill: Turning A/B Test Results into a Launch Decision

An A/B test of a new feature has finished and the readout is in front of you. Walk through how you decide whether the feature should launch. `hint Tru...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
0
0
5 people solved
May 25, 2026
Disney logo
Disney
Medium
Software Engineer

Solve grid shortest path with BFS

Given a 2D grid containing 0s (open cells) and 1s (walls), and coordinates for a start (sr, sc) and a target (tr, tc), return the length of the shorte...

Coding & Algorithms
10
0
100 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Hard
Machine Learning Engineer

Discuss ML infrastructure fundamentals

Discuss ML infrastructure fundamentals ML System Design: Infra Stack, Feature Store, Reproducibility, and Monitoring Context: You are designing and op...

ML System DesignML Data Pipelines & Feature StoresMLOps & Model Serving
27
0
209 people solved
Jul 29, 2025
Google logo
Google
Hard
Data Scientist

Predict and act on contract renewal risk

Predicting Enterprise Contract Renewal After a Quality Incident Context A video-conferencing provider experienced a spike in call disconnects. You nee...

Machine LearningSupervised LearningFeature Engineering
14
0
111 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Design a donation service for a 3‑day charity

This question evaluates a candidate's system design skills around building a reliable, scalable online donation service, emphasizing competencies in p...

System DesignPayments & LedgersDistributed Transactions & Idempotency
24
0
391 people solved
Jan 18, 2026
Meta logo
Meta
Hard
Data Scientist

Design cluster-randomized test under network effects

A/B Test Design for a New Group Call Feature with Network Effects You are designing an experiment for a Group Call feature where social network effect...

Analytics & Experimentation
10
0
73 people solved
Oct 13, 2025
Instacart logo
Instacart
Hard
Software Engineer

Design scalable inventory system and avoid races

System Design: Scalable, Highly Available Inventory Management Context Design an inventory management system for a high-traffic e-commerce platform th...

System DesignTransactions & IsolationDistributed Transactions & Idempotency
36
0
326 people solved
Sep 6, 2025
PayPal logo
PayPal
Medium
Product Manager

PayPal Monetization Strategy: Levers to Raise the Merchant Take Rate

PayPal's take rate is the percentage of transaction value that PayPal charges merchants as revenue, measured across all of the transactions that go th...

Product Design & StrategyGrowth & MonetizationMetrics & KPIs
0
0
7 people solved
Jul 28, 2025
Meta logo
Meta
Medium
Data Engineer

Demonstrate behavioral competencies

Demonstrate behavioral competencies Behavioral Interview Prompt: Prepare STAR Stories Context You are preparing for an onsite Behavioral & Leadership ...

Behavioral & Leadership
5
0
55 people solved
Aug 4, 2025
Shopify logo
Shopify
Medium
Product Manager

Architect Shopify's checkout from cart to paid order for many merchants

You are interviewing for a product manager role and get a technical design prompt: design the checkout system for Shopify, the commerce platform on wh...

System DesignTechnical Tradeoffs for PMsDistributed Transactions & Idempotency
1
0
11 people solved
Feb 22, 2025
TikTok logo
TikTok
Medium
Software Engineer

Find substring where all chars appear at least k

You are given a string s and an integer k (1 ≤ k ≤ |s|). Return the length of the longest substring in which every distinct character occurs at least ...

Coding & Algorithms
4
0
68 people solved
Sep 6, 2025
Shopify logo
Shopify
Hard
Data Scientist

Present Piracy Trends to a PM

You ran the analyses above and got two preliminary findings: - the monthly pirated-theme usage rate appears to rise from 0% to 100% over the observed ...

Analytics & Experimentation
10
0
73 people solved
Jan 12, 2026
Databricks logo
Databricks
Medium
Product Manager

PM behavioral: walk through a hard technical problem you helped solve

Walk the interviewer through a difficult technical problem you faced and how you got it solved. `hint Make your part visible Pick a problem whose tech...

Behavioral & LeadershipProject Deep DiveTechnical Tradeoffs for PMs
1
0
15 people solved
Jan 1, 2024
LendingClub logo
LendingClub
Medium
Data Scientist

Query Active Loans by Borrower ID in SQL

loans +---------+------------+----------+-----------+---------------+ | loan_id | borrower_id| amount | status | payment_date | +---------+-----...

Data Manipulation (SQL/Python)
2
0
45 people solved
Aug 4, 2025
Hinge logo
Hinge
Easy
Data Engineer

Hardest data project deep dive, influencing without authority, and two-way feedback

These prompts come from the recruiter and hiring-manager conversations of a data engineering loop. Both conversations open with your background: your ...

Behavioral & LeadershipProject Deep DiveLeadership & Influence
0
0
3 people solved
May 12, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Reinventing the classic globe: users, pain points, features and success metrics

You are a product manager at Microsoft, and the interviewer's prompt is short: design a globe. Nothing else is specified, so deciding what kind of glo...

Product Design & StrategyProduct SenseMetrics & KPIs
2
0
15 people solved
Dec 29, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Back-of-the-Envelope Estimate of Microsoft Excel's Current User Base

Estimate how many people use Microsoft Excel today. Walk through how you define the number, the assumptions you make and the arithmetic, and say wheth...

Product / Decision MakingEstimation & Market Sizing
1
0
10 people solved
Oct 12, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Minimize steps to reduce integer

Given a positive integer n (1 <= n <= 2^61 - 1), in one step you may replace n with n/2 if n is even, or with n+1 or n-1 if n is odd. Return the minim...

Coding & AlgorithmsGreedyBit Manipulation
16
0
107 people solved
Sep 6, 2025
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