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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
Robinhood logo
Robinhood
Medium
Data Scientist

Design Real-Time Analytics Pipeline with Kafka and Flink

Design Real-Time Analytics Pipeline with Kafka and Flink Real-Time Clickstream Analytics Pipeline with Kafka and Flink Scenario You need to design a r...

Behavioral & LeadershipBatch & Stream ProcessingMessaging & Event-Driven
16
0
156 people solved
Aug 4, 2025
Google logo
Google
Hard
Software Engineer

Design viewing history and resume service

Design: Watched-Video and Resume Playback Service Context Design a backend service that records each user’s watched video list and lets them resume an...

System DesignSystem Design FundamentalsAPI Design
18
0
132 people solved
Sep 6, 2025
Point72 logo
Point72
Easy
Data ScientistIntern

Find kth missing integer and redundant operations

You are given two independent coding tasks. Task 1: K-th missing number You are given an integer array nums (not necessarily sorted) containing distin...

Coding & Algorithms
15
0
110 people solved
Oct 20, 2025
Meta logo
Meta
Medium
Software Engineer

Derive max distinct frequencies for n items

Maximum Number of Distinct Frequency Counts in an Array Context You are given an array of length n ≥ 1 whose elements are arbitrary integers (values m...

Statistics & Math
10
0
89 people solved
Sep 6, 2025
Google logo
Google
Medium
Software Engineer

How to handle huge inputs?

In a coding interview, after solving an in-memory algorithmic problem, the interviewer asks: "What would you do if the input were extremely large?" Gi...

Software Engineering Fundamentals
8
0
78 people solved
May 13, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Convert binary tree traversals to forest count

A binary tree has the following traversals: - Inorder: A, B, C, D, E, F, G - Postorder: B, D, C, A, F, G, E This binary tree is converted to an equiva...

Software Engineering Fundamentals
7
0
61 people solved
Oct 24, 2025
Amazon logo
Amazon
Medium
Software Engineer

Find first unique character

Find first unique character Given a lowercase/uppercase alphanumeric string s, return the index of the first character that appears exactly once; if n...

Coding & Algorithms
6
0
58 people solved
Jul 15, 2025
Capital One logo
Capital One
Medium
Data Scientist

Explain App Growth Strategy and Key Performance Metrics

App Growth Strategy and Key Performance Metrics In an onsite Analytics and Experimentation interview, you must explain a favorite digital consumer app...

Analytics & Experimentation
99
0
341 people solved
Jul 12, 2025
Amazon logo
Amazon
Hard
Data Scientist

Explain complex tech to non-technical stakeholder

Behavioral: Explain a Complex Modeling Decision to a Non‑Technical Sales Leader You are asked to explain a complex modeling decision from a résumé pro...

Behavioral & Leadership
3
0
42 people solved
Oct 13, 2025
Meta logo
Meta
Easy
Data Scientist

Compute probabilities for chatbot response quality

Context A chatbot response is considered good if it is both: - Helpful, and - Honest. You are told: - \(P(\text{Helpful}) = 0.8\) - \(P(\text{Honest})...

Statistics & MathProbability
5
1
104 people solved
Oct 30, 2025
Coinbase logo
Coinbase
Easy
Data Scientist

Calculate Expected Users Linking Coinbase Wallets

Expected Coinbase Wallet Linking When users sign up for Coinbase, each of the n users is independently prompted to link a crypto wallet. Each user lin...

Statistics & MathProbability
15
0
118 people solved
Jul 12, 2025
Google logo
Google
Medium
Product Manager

North-star and funnel metrics for Google Maps indoor navigation in malls

You are a product manager on Google Maps and are asked how you would measure the success of Maps in shopping malls. Define what success means in that ...

Analytics & ExperimentationMetrics & KPIsUser Behavior & Funnels
0
0
4 people solved
Jan 13, 2025
HBO logo
HBO
Hard
Data Scientist Locked

Define scalable train/validation for churn

This question evaluates a data scientist's competency in designing scalable, leakage-safe training, validation, evaluation, and serving pipelines for ...

Machine Learning
6
0
59 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Model comment count distribution and validate assumptions

You observe daily comment counts per post on a large social app are highly skewed with many zeros. a) Choose an appropriate discrete model among Poiss...

Statistics & MathProbabilitySampling & Estimation
6
0
91 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Product Manager

Uber Eats Product Sense: Helping Customers Find the Right Restaurant Faster

You are a product manager at Uber. How would you make restaurant search better? Treat this as the search experience in the Uber Eats app, where custom...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
5 people solved
Sep 25, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Keeping a Fixed-Price Client Project on Track When a Pandemic Shrinks Your Team

You are a program manager responsible for a customer project that already sits on the critical path, so any slip in it pushes out the overall delivery...

Product / Decision MakingPrioritization & TradeoffsCommunication & Stakeholders
1
0
10 people solved
Jul 8, 2025
Pinduoduo logo
Pinduoduo
Easy
Software Engineer Locked

Determine Straight Flush

This question evaluates competency in algorithmic pattern detection and data-structure manipulation applied to domain-specific representations, focusi...

Coding & Algorithms
5
0
40 people solved
Mar 15, 2026
Shopify logo
Shopify
Medium
Machine Learning Engineer

Describe ML projects and tech choices

ML Project Overview and Deep Dive (HR Screen) Context You are interviewing for a Machine Learning Engineer role. Provide a concise, structured overvie...

ML System DesignProject Deep DiveModel Evaluation
16
0
149 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Software Engineer

Solve message splitting and board crushing

Question LeetCode 2468. Split Message Based on Limit – Given a message string and a per-line width, split it into parts adding the suffix "<i/n>" (e.g...

Coding & AlgorithmsGrids & MatricesArrays & Strings
11
0
123 people solved
Aug 4, 2025
Ola logo
Ola
Medium
Product Manager

Ola Product Sense: Three Features to Build Rider Loyalty and Everyday Use

You are a product manager at Ola, the ride-hailing company in India. Ola's CEO, who is also one of its co-founders, wants riders to feel more loyal to...

Product Design & StrategyProduct Design & ImprovementGrowth & Monetization
0
0
8 people solved
Oct 26, 2025
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