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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
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Build a concurrent web crawler

This question evaluates understanding of concurrent programming, synchronization, thread safety, and graph traversal as applied to a multithreaded web...

Coding & AlgorithmsConcurrencyNetworking
38
0
258 people solved
Apr 5, 2026
Airbnb logo
Airbnb
Medium
Machine Learning EngineerSenior+

Design a Family-Friendly Listing Classifier

Design a machine learning system for a short-term rental marketplace that classifies whether a property listing is suitable for families. Users should...

ML System Design
9
0
120 people solved
Apr 28, 2026
eBay logo
eBay
Hard
Software Engineer

Handle cache-update conflicts in distributed services

Design: Cache–Database Consistency with Concurrent Writers Context You operate a high-throughput service using a cache (e.g., Redis) in front of a rel...

System DesignCachingDistributed Transactions & Idempotency
32
0
470 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Maximum Binary XOR After Rearranging One String

Problem You are given equal-length binary strings s and t. You may rearrange the characters of t arbitrarily, but s must stay in its original order. R...

Coding & AlgorithmsBit ManipulationGreedy
0
0
5 people solved
Google logo
Google
Medium
Product Manager

Google PM Behavioral: A Product Call Made on Incomplete Data

In a product manager interview at Google, you are asked to describe a product decision you made using data at a time when much of the information you ...

Behavioral & LeadershipAmbiguity & Decision Making
1
0
9 people solved
Aug 18, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design CI/CD Build Caching

This question evaluates design skills around CI/CD build caching, including distinguishing cache types (dependency caches, compiler outputs, container...

System DesignCachingCI/CD & Deployment
25
0
397 people solved
May 26, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Design rental watchlist and notification system

Design a Rental Listing Watchlist and Availability-Notification System You are designing a feature for a vacation-rental marketplace (Airbnb-style). A...

System DesignMessaging & Event-DrivenStorage & Sharding
80
1
559 people solved
Sep 6, 2025
Chicago Trading Company logo
Chicago Trading Company
Medium
Software EngineerNew Grad Locked

Describe Growth, Mistakes, and Obstacles

This prompt evaluates learning velocity, ownership, collaboration, accountability, and interpersonal problem-solving by eliciting concrete internship ...

Behavioral & Leadership
5
0
49 people solved
Jun 10, 2026
Google logo
GoogleMicrosoftBloomberg

Also asked at Bloomberg, Amazon, Meta, CRED

Easy
Software Engineer

Count Occurrences of the Most Frequent Values

Count Occurrences of the Most Frequent Values You are given an array nums of positive integers. A value's frequency is the number of times it occurs i...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Expedia logo
Expedia
Medium
Software Engineer Locked

Discuss Production Recovery, Mentoring, Challenge, AI, and Conflict

Prepare concise real examples about production recovery, mentoring, a challenging project, responsible AI work, and substantive conflict. Effective an...

Behavioral & Leadership
4
0
35 people solved
Jul 16, 2026
LinkedIn logo
LinkedIn
Medium
DevOps EngineerSenior+ Locked

Design a CI Job Scheduler with Live Build Output

Design a continuous-integration scheduler where source changes create dependency-aware builds, workers execute jobs, and users see live status and std...

System Design
4
0
78 people solved
Aug 1, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Evaluate Noisy Data for LLM Post-Training

This question evaluates competency in post-training data curation and experimental judgment for large language models, including assessing noisy datas...

Machine LearningFine-Tuning & Alignment TechniquesAnnotation & Label Quality
34
0
347 people solved
May 31, 2026
Jane Street logo
Jane Street
Easy
Quantitative TraderIntern

Four Fair Coins: Expected Payoff and Pricing Two Magic Wands

You play the following game: four fair coins are tossed at the same time. For every coin that lands heads, you are paid \$1. The interviewer walks you...

Machine LearningProbabilityPuzzles & Brainteasers
14
1
170 people solved
Sep 11, 2025
Meta logo
Meta
Easy
Software Engineer

Implement an in-memory database with record locking

Implement an in-memory key–record database that supports basic CRUD on fields plus an exclusive lock per record. You are given a sequence of queries. ...

Coding & AlgorithmsData Structure DesignConcurrency
15
0
183 people solved
Mar 8, 2026
Meta logo
Meta
Medium
Software Engineer

Solve Array Merge and Parentheses Cleanup

You are asked to solve two coding problems. Problem 1: Merge Three Sorted Arrays Given three integer arrays, each sorted in nondecreasing order, merge...

Coding & Algorithms
4
0
38 people solved
Apr 29, 2026
Stripe logo
Stripe
Medium
Product Manager

Analyze Two Flawed Products That Still Succeed Commercially and Why

Pick two products that have obvious flaws but still succeed. For each one, describe what makes it a bad product, and explain why it is successful in s...

Product Design & StrategyProduct SenseMarket & Competitive Analysis
2
0
24 people solved
Feb 25, 2026
Bloomberg logo
Bloomberg
Hard
Software EngineerNew Grad

Compute the Nth Recency Value

Given an integer n >= 1, define a sequence a as follows: - a[0] = 0 - For each i >= 1: - If a[i - 1] has appeared earlier in the sequence, meaning t...

Coding & Algorithms
8
1
81 people solved
Oct 9, 2025
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Describe an innovation you drove end-to-end

Behavioral Question: Innovation Many teams value “innovation,” meaning you can generate and deliver novel, high-impact ideas. Prompt: - Tell me about ...

Behavioral & LeadershipInnovation & Simplification
12
0
119 people solved
Jan 10, 2026
Meta logo
Meta
Medium
Machine Learning EngineerIntern AI Locked

Implement Sparse Matrix Operations

This question evaluates proficiency in sparse linear algebra, efficient algorithms, and data-structure design for numerical and machine learning workl...

Coding & Algorithms
12
0
102 people solved
Feb 8, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Implement Memory Allocation and In-Memory Records

This question evaluates implementation skills in memory management and in-memory data modeling, covering first-fit allocation semantics, free/merge be...

Coding & Algorithms
3
0
53 people solved
May 7, 2026
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