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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
Google logo
GoogleAmazonMeta
Hard
Software Engineer

Sum the Block Lengths That Permit Sorting by Rotation

Sum the Block Lengths That Permit Sorting by Rotation You are given an integer array nums of length n. A positive integer k is valid if k divides n an...

Coding & AlgorithmsArrays & StringsMath & Number Theory
0
0
7 people solved
Box logo
Box
Medium
Software Engineer

Compute Top-K word frequencies under a path

Compute Top-K word frequencies under a path Given a filesystem path that may contain nested subdirectories and files, compute the top K most frequent ...

Coding & AlgorithmsHeaps & Priority QueuesBatch & Stream Processing
38
0
266 people solved
Aug 1, 2025
Optiver logo
Optiver
Easy
Software Engineer

Find patterns in numeric sequences quickly

Pattern-Finding Number Sequences (No Calculator) In a fast technical screen, identify the next term for each sequence and briefly explain the rule you...

Statistics & MathMath & Number Theory
45
3
475 people solved
Aug 13, 2025
Meta logo
Meta
Hard
Data Scientist

Should We Launch Group Calling?

Question You work on a consumer calling product (think Messenger/WhatsApp-style voice) that currently supports only one-to-one voice calls. The team i...

Analytics & Experimentation
11
0
82 people solved
Mar 4, 2026
Databricks logo
Databricks
Medium
Machine Learning EngineerSenior+ Locked

Delete a Character From Cover

This question evaluates proficiency in string manipulation, interval arithmetic, and data-structure updates with attention to index mapping and edge-c...

Coding & AlgorithmsArrays & StringsIntervals & Scheduling
18
0
133 people solved
Feb 7, 2026
Spotify logo
Spotify
Medium
Machine Learning Engineer Locked

Design a Sequential Personalized Playlist Recommender

Design a real-time ML system that selects and orders a personalized 10-track playlist from 10,000 candidates. Cover sequence-aware reranking, behavior...

ML System Design
9
0
70 people solved
Aug 14, 2026
Microsoft logo
Microsoft
Medium
Site Reliability EngineerSenior+

Behavioral: a problem that stumped you, your peers and AI tools, and how you solved it

Describe a problem that defeated you, your colleagues and the AI tools you tried. What happened, and how did you eventually get past it? The interview...

Behavioral & LeadershipDebuggingOwnership & Execution
1
0
11 people solved
Jul 30, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Design Boolean Search over User Status Posts

Design a Boolean search service for status posts using normalized tokens and an inverted index. Cover deterministic AND/OR evaluation, asynchronous fr...

System DesignSearch & Feed SystemsStorage & Sharding
17
0
306 people solved
Aug 8, 2026
Amazon logo
AmazonGoogleBloomberg

Also asked at Bloomberg, Meta, Microsoft

Medium
Software Engineer

Count Subarrays with at Least k Occurrences of the Global Maximum

Count Subarrays with at Least k Occurrences of the Global Maximum You are given an integer array nums and a positive integer k. Let M be the maximum v...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
0
0
11 people solved
Pinterest logo
Pinterest
Medium
Software Engineer

Implement a min-heap column allocator

You are given an integer k (number of columns) and an array posts of positive integers where posts[i] is the height of the i-th post. All columns star...

Coding & AlgorithmsHeaps & Priority QueuesData Structure Design
32
0
277 people solved
Sep 6, 2025
eBay logo
eBay
Hard
Software EngineerSenior+

Answer senior behavioral questions

For a senior software engineering interview, prepare strong answers to the following leadership and impact questions: 1. Tell me about a time you infl...

Behavioral & LeadershipLeadership & InfluenceProject Deep Dive
17
0
117 people solved
Mar 7, 2026
Reddit logo
Reddit
Medium
Data ScientistSenior+

Compute P(A>B) for m- and n-sided dice

Two fair dice are rolled independently: - Die A has m faces labeled \(1,2,\dots,m\). - Die B has n faces labeled \(1,2,\dots,n\). Each face is equally...

Statistics & MathProbability
11
0
173 people solved
Sep 19, 2025
Coreweave logo
Coreweave
Medium
Site Reliability Engineer Locked

Design Batch Reboots for Machines

This question evaluates a candidate's competency in designing reliable, capacity-aware operational systems for large-scale machine management, includi...

System DesignJob Scheduling & WorkflowsFault Tolerance & Failover
53
0
422 people solved
Feb 13, 2026
Google logo
GoogleMicrosoftAmazon

Also asked at Amazon, Meta, Bloomberg, TCS, Cognizant

Easy
Software Engineer

Attach Employee Identifiers without Dropping Unmatched Employees

Problem Return unique_id and name for every Employees row. Match EmployeeUNI by id; show NULL when no identifier mapping exists. An employee with seve...

Data Manipulation (SQL/Python)SQL
1
0
8 people solved
Lyft logo
Lyft
Easy
Software Engineer

Design a Fault-Tolerant Wikipedia Archiver

Question Design a distributed system that archives all Wikipedia pages and keeps the archive current. You have one reliable primary machine, about one...

System Design
3
0
43 people solved
Apr 14, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Design a harmful video content moderation system

Question Design an end-to-end system to detect and moderate harmful videos on a large platform. Requirements - Detect multiple policy categories (viol...

ML System Design
13
0
252 people solved
Dec 15, 2025
Airbnb logo
Airbnb
Hard
Software Engineer

Count Consecutive Positive Integer Sums

Count Consecutive Positive Integer Sums Given a positive integer n, return the number of ways to write n as a sum of one or more consecutive positive ...

Coding & Algorithms
11
0
93 people solved
Apr 21, 2026
Roblox logo
Roblox
Medium
Software Engineer Locked

Design favorites and social game recommendations

This question evaluates a candidate's ability to design scalable backend systems for social features, assessing competencies in data modeling, event-d...

System DesignSearch & Feed SystemsRecommendation Systems
40
0
294 people solved
Feb 11, 2026
Google logo
Google
Medium
Software Engineer Locked

Find shortest relationship path using BFS

This question evaluates proficiency in graph representations and traversal algorithms—specifically BFS and adjacency-structure construction—for comput...

Coding & AlgorithmsGraphs
32
1
228 people solved
Feb 12, 2026
Google logo
GoogleMeta
Easy
Software Engineer

Choose Exactly k Ones, Zeros, and Negative Ones for the Greatest Sum

Problem A bag contains numOnes entries equal to 1, numZeros entries equal to 0, and numNegOnes entries equal to -1. Choose exactly k available entries...

Coding & AlgorithmsGreedyMath & Number Theory
0
0
8 people solved
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