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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
Amazon logo
Amazon
Medium
Software Engineer

Implement ad matching and delivery routing

Implement ad matching and delivery routing Part A: Implement a data structure for an ad-matching service that supports add(campaign), remove(campaign)...

Coding & Algorithms
8
0
87 people solved
Jul 16, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Find orders from bottom-quartile revenue restaurants

SQL Question You want to identify orders coming from restaurants whose total revenue is in the bottom 25th percentile. Assume the following tables: re...

Data Manipulation (SQL/Python)SQL
6
0
128 people solved
Jul 7, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Explain Python, Java, and Memory Management

This question evaluates understanding of programming language concepts and runtime behavior—covering typing disciplines, runtime models, performance a...

Software Engineering Fundamentals
6
0
50 people solved
Feb 22, 2026
Walmart Labs logo
Walmart Labs
Medium
Product ManagerIntern

Handle negative comments on marketplace

You are the Product Manager for an e-commerce marketplace. You notice a rise in negative comments and reviews from users. How would you investigate th...

Product / Decision Making
8
0
62 people solved
Jul 10, 2024
Wells Fargo logo
Wells Fargo
Medium
Data Scientist

Compute EL and RWA from loan data

Compute EL and RWA from loan data Task: Compute Portfolio EL and RWA from Loan-Level PD, LGD, EAD Context You are given an anonymized, loan-level data...

Machine Learning
7
0
57 people solved
Jul 26, 2025
Medium
Data Scientist

Prove reservoir sampling correctness

Design an algorithm to sample k items uniformly at random from a stream of unknown and potentially massive length N, using O(k) memory and one pass. (...

Coding & Algorithms
6
0
68 people solved
Oct 13, 2025
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Compute dependency load factors in a DAG

This question evaluates understanding of graph theory and algorithms, specifically reachability and dependency analysis in a directed acyclic graph, a...

Coding & AlgorithmsGraphs
13
1
244 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Product Manager

Go-to-Market Plan to Bring Meta's Portal Smart Display to Enterprise Customers

You are the product manager for Portal, Meta's smart display built around video calling. You are asked how you would take Portal into the enterprise m...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
7 people solved
May 8, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Failure story: a project that went off plan and the lessons you put into practice

In a product manager interview you are asked to describe a situation at work where something did not go according to plan. Walk through what happened,...

Behavioral & LeadershipFailure & Learning
0
0
6 people solved
Jan 25, 2025
Capital One logo
Capital One
Medium
Machine Learning Engineer Locked

Simulate round-robin package assignment to servers

This question evaluates array-based simulation and control-flow skills for load distribution, including pointer management, modular wrap-around scanni...

Coding & Algorithms
10
0
84 people solved
Jan 20, 2026
Front Financial logo
Front Financial
Medium
Product Manager

Improve Internet Speed for End Users: Define Speed, Find the Bottleneck, Prioritize Fixes

How would you make the internet faster for the people who use it? Explain what "faster" should mean, where the delay comes from, what you would change...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
4 people solved
Feb 7, 2025
Amazon logo
Amazon
Medium
Product Manager

System Design for an Online Event Ticketing Site: Seat Holds, Checkout and Spikes

Walk through how you would design the system behind a web application where people buy tickets to events. `hint Find the scarce resource Browsing an e...

System DesignTechnical Tradeoffs for PMsSystem Design Fundamentals
0
0
6 people solved
Aug 21, 2024
Google logo
Google
Medium
Product Manager

LG Smart Fridge Go/No-Go: Market Read, Business Case and Recommendation

You are a product manager at LG, the consumer electronics and home appliance maker. Decide whether LG should launch a smart fridge, and back the call ...

Product Design & StrategyProduct StrategyBusiness Case Analysis
0
0
6 people solved
Jan 22, 2024
Google logo
Google
Medium
Product Manager

Strategy call: a Google smart speaker program for hotel guest rooms

Should Google put Google Home smart speakers in hotel rooms for guests to use during their stay? Give a recommendation and the reasoning behind it. `h...

Product Design & StrategyProduct StrategyPrivacy & Compliance
0
0
4 people solved
Sep 9, 2024
Amazon logo
Amazon
Medium
Product Manager

PM Response When Internal Users Reject a Newly Launched Tool

Your team has just shipped a new tool built for an internal customer team. That team is refusing to adopt it: they believe the new system will do litt...

Product Design & StrategyRequirements & Launch ExecutionCommunication & Stakeholders
0
0
7 people solved
Feb 18, 2024
Amazon logo
Amazon
Hard
Data Scientist

Estimate Treatment Effects Using PSM, DiD, and DML Methods

Estimate Treatment Effects Using PSM, DiD, and DML Methods Causal Impact of Marketing Campaigns: PSM, DiD, Synthetic Control, and DML Scenario You hav...

Statistics & MathCausal Inference
25
0
157 people solved
Aug 4, 2025
Google logo
Google
Medium
Product Manager

Fermi estimate of Google's query throughput in queries per second

Estimate how many queries Google answers each second. Walk through how you structure the estimate, label every assumption you make, and finish with a ...

Product / Decision MakingEstimation & Market Sizing
0
0
7 people solved
Mar 21, 2024
Cloverhealth logo
Cloverhealth
Medium
Software Engineer Locked

Design appointment scheduling data model and APIs

This question evaluates backend data modeling, REST API design, and enforcement of domain constraints within a web framework, focusing on scheduling, ...

System Design
2
0
41 people solved
Feb 5, 2026
Optiver logo
Optiver
Medium
Data Scientist

Compute expected coin flips to meet on octagon

Compute expected coin flips to meet on octagon Meeting Time on a Random Walk Around an Octagon Problem Two independent particles start at opposite ver...

Statistics & MathPuzzles & BrainteasersProbability
8
0
139 people solved
Jul 17, 2025
TikTok logo
TikTok
Medium
Product Manager

Product sense: reinvent a home laundry machine pair to win buyers and lift profit

Redesign a washer and dryer with two goals: the machines should sell better, and they should earn more profit. Explain who you would design for, which...

Product Design & StrategyProduct SenseGrowth & Monetization
0
0
7 people solved
Feb 14, 2026
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