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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
Stripe logo
Stripe
Medium
Software EngineerSenior+

Architecture Deep-Dive: 15–20 Minute Past-Project Talk and Retrospective Follow-ups

One round of this staff-level loop is an architecture deep-dive on your own past work. You prepare a 15–20 minute presentation about a significant tec...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
2
0
34 people solved
Feb 22, 2026
Apple logo
Apple
Medium
Machine Learning Engineer Locked

Explain dataset size, generalization, and U-Net skips

This question evaluates understanding of core machine learning and computer vision competencies — including dataset size trade-offs, generalization an...

Machine LearningML FundamentalsComputer Vision
23
0
161 people solved
Mar 1, 2026
Apple logo
Apple
Medium
Machine Learning Engineer

Design App Store search

Design the search system for a mobile app marketplace similar to an app store. Users enter short queries such as 'photo editor', 'budget tracker', or ...

ML System Design
10
0
107 people solved
Dec 17, 2025
Figma logo
Figma
Medium
Data Scientist

Describe impact, prioritization, and stakeholder management

Describe impact, prioritization, and stakeholder management Behavioral interview (Hiring Manager) You are interviewing for a data/ML role. Answer the ...

Behavioral & LeadershipProject Deep DiveMetrics & KPIs
21
0
149 people solved
Jul 25, 2025
Amazon logo
Amazon
Medium
Product Manager

Diagnose Falling Sales per User at Amazon While Monthly Active Users Keep Growing

You are a product manager at Amazon. Over the last six months, Amazon's monthly active users (MAU) have risen steadily, which looks like strong engage...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
1
0
10 people solved
Apr 21, 2026
EliseAI logo
EliseAI
Medium
Software Engineer

Explain prompt engineering strategies for chatbots

Prompt Engineering for Reliable, Steerable, and Safe Chatbots Context You are designing a production-grade chatbot that must be reliable (consistent, ...

Machine LearningPrompt EngineeringLLM Applications
25
0
186 people solved
Sep 6, 2025
Netflix logo
Netflix
Medium
Software EngineerSenior+ Locked

Design an ad frequency capping system

This question evaluates a candidate's ability to design scalable, low-latency distributed systems that enforce ad frequency caps across users, devices...

System DesignAds SystemsRate Limiting
14
0
241 people solved
Sep 30, 2025
Snapchat logo
Snapchat
Medium
Machine Learning Engineer Locked

Model an ads ranking system

This question evaluates machine learning modeling, feature engineering, and systems-level ranking competencies for ad selection and monetization, cove...

Machine LearningRanking ModelsCTR Prediction & Ads ML
12
0
106 people solved
Feb 12, 2026
eBay logo
eBay
Easy
Applied Scientist

Behavioral: beyond-scope ownership, manager conflict, and a skip-level deadline at risk

These questions probe ownership and how you handle disagreement and deadline pressure with the people above you. Answer each part with a specific exam...

Behavioral & LeadershipOwnership & ExecutionCommunication & Stakeholders
0
0
12 people solved
Sep 24, 2026
DoorDash logo
DoorDash
Hard
Data Scientist Locked

Design DoorDash Marketplace Experiments

This question evaluates a data scientist's competency in experiment and quasi-experiment design, causal inference, metric definition, and judgment abo...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
24
0
192 people solved
Feb 10, 2026
Apple logo
Apple
Medium
Software Engineer

Explain use cases for clock synchronizers

Assume you are designing a digital system with multiple clock domains. The clocks have different frequencies and unknown phase relationships. You can ...

Software Engineering Fundamentals
7
0
103 people solved
Dec 8, 2025
Meta logo
Meta
Medium
Software Engineer

Design an in-memory cloud file system

In-Memory Cloud File System (OOD) Design an in-memory cloud file system that supports files owned by users with storage quotas. Data model / rules - E...

Coding & Algorithms
9
0
68 people solved
Feb 11, 2026
Voleon logo
Voleon
Hard
Machine Learning EngineerSenior+

Compare Mixture-of-Experts and Dense Transformers

Compare Mixture-of-Experts and Dense Transformers Compare mixture-of-experts and dense Transformer models. Explain capacity, compute, routing, memory,...

Machine Learning
4
0
35 people solved
Jul 31, 2025
Ola logo
Ola
Medium
Product Manager

LinkedIn Creator Engagement: Segment Creators, Prioritize Bets and Pick Metrics

You are a product manager at LinkedIn. Leadership wants more engagement around the people who publish content on LinkedIn, from well-known industry vo...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
9 people solved
Apr 1, 2026
Meta logo
Meta
Easy
Machine Learning EngineerSenior+ Locked

Design an Online Coding Judge

This question evaluates system design and scalability skills for building a high-throughput, low-latency online coding judge, covering distributed arc...

System Design
4
0
74 people solved
Feb 27, 2026
Google logo
GoogleMetaAmazonBloomberg

Also asked at Amazon, Bloomberg

Easy
Software Engineer

Digit Product Minus Digit Sum

Problem For positive integer n, multiply its decimal digits and separately add them. Return the product minus the sum. `cpp class Solution { public: ...

Coding & AlgorithmsMath & Number Theory
0
0
6 people solved
Zomato logo
Zomato
Medium
Product Manager

Zomato Product Sense: Helping Health-Minded Customers Find Better Dishes

You are a product manager at Zomato. Design a new feature that makes it easier for users to choose healthier options when they decide what and where t...

Product Design & StrategyProduct SenseMetrics & KPIs
1
0
9 people solved
May 19, 2026
Google logo
Google
Medium
Software Engineer

Maximize Boundary-Difference Subarray Sum

Given an integer array nums and an integer k, find the maximum possible sum of a non-empty contiguous subarray whose first and last elements differ by...

Coding & Algorithms
16
0
115 people solved
Apr 11, 2026
TikTok logo
TikTok
Hard
Software Engineer Locked

Solve four OA algorithm problems

This multi-part exercise evaluates algorithmic problem-solving across combinatorics and geometry (counting axis-aligned square subgrids), string reord...

Coding & AlgorithmsSimulation & State MachinesMath & Number Theory
12
0
171 people solved
Jan 22, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Guide and override compiler optimizations

Guiding a Compiler for a VLIW-like Backend You are optimizing hot loops for a VLIW-like target (e.g., DSP/AI accelerator) where the compiler sometimes...

System Design
14
0
228 people solved
Sep 6, 2025
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