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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
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Design a Dictionary for Heterogeneous Key and Value Types

Design a heterogeneous dictionary with explicit type-aware equality, hashing, collision resolution, variable-length ownership, resizing, and persisten...

Software Engineering FundamentalsData Structure DesignMemory Management
1
0
20 people solved
Aug 30, 2026
Bloomberg logo
BloombergAmazonGoogleMeta

Also asked at Google, Meta

Medium
Software Engineer

Check Whether Bounded Jumps Reach the Final Index

Problem Start at index zero of binary string s, whose first character is zero. From i you may jump to a zero-valued position j satisfying i+minJump <=...

Coding & AlgorithmsDynamic ProgrammingTwo Pointers & Sliding Window
0
0
10 people solved
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Can You Place N Objects?

This question evaluates array traversal, adjacency-constraint reasoning, and greedy placement intuition, emphasizing handling of boundary conditions a...

Coding & AlgorithmsGreedyArrays & Strings
15
0
123 people solved
Mar 22, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Find the Best Connected Strength for Every Tree Node

For every node in a tree of strong and weak neurons weighted +1 and -1, find the best connected nonempty vertex set containing that node. A linear-tim...

Coding & Algorithms
6
0
62 people solved
May 20, 2026
Amazon logo
AmazonGoogleMicrosoftZoho

Also asked at Microsoft, Zoho

Easy
Software Engineer

Most Words in One Sentence

Problem Each string in sentences is a nonempty sentence of lowercase English words separated by a single space, with no leading or trailing spaces. Re...

Coding & AlgorithmsArrays & Strings
0
0
10 people solved
eBay logo
eBay
Medium
Software Engineer

Explain React Rendering and How You Fixed a Re-render Problem

Besides the coding question, the interview covered your relevant frontend work experience, with a focus on React rendering. Choose a React application...

Software Engineering FundamentalsReact & UI FrameworksWeb Performance
1
0
15 people solved
May 8, 2026
Sonatus logo
Sonatus
Hard
Software Engineer

Design a RAG system for vehicle documents

Design a Retrieval-Augmented Generation (RAG) architecture to power a Q&A chatbot over vehicle documentation. Document types & characteristics - Sourc...

System DesignRetrieval-Augmented GenerationEmbeddings & Vector Search
14
0
113 people solved
Feb 12, 2026
Databricks logo
Databricks
Medium
Software EngineerSenior+ Locked

Explain storing files to disk with concurrency

This question evaluates systems programming concepts (OS I/O, page cache, fsync semantics) and Java concurrency mechanisms (thread-safety, synchroniza...

Software Engineering FundamentalsConcurrencyOperating Systems
23
1
434 people solved
Oct 10, 2025
Airbnb logo
Airbnb
Hard
Software Engineer

Infection Spread Time on a Grid

Infection Spread Time on a Grid You are given an m x n grid where every cell holds one of three integer values: - 0 — an empty cell that can never be ...

Coding & Algorithms
7
0
88 people solved
Mar 4, 2026
Apple logo
Apple
Medium
Software EngineerIntern

Explain SystemVerilog verification concepts and write constraints

Answer the following SystemVerilog / DV questions. Use short explanations and, where appropriate, show small SV code snippets. 1) Concurrency: Explain...

Software Engineering FundamentalsProgramming LanguagesConcurrency
10
0
174 people solved
Feb 9, 2026
Crowdstrike logo
Crowdstrike
Medium
Software Engineer Locked

Design a file upload and scanning report system

This question evaluates a candidate's ability to design scalable, secure distributed systems for asynchronous file handling, including API design, dat...

System DesignFile & Media StorageApplication Security
24
0
190 people solved
Jan 22, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Hands-On Critique of AI Prompt-to-App Builders Such as Lovable

An interviewer asks whether you have tried AI app builders such as Lovable, which produce a working web app from a plain-language description, and wha...

Product Design & StrategyAI Product ManagementMarket & Competitive Analysis
1
0
10 people solved
May 31, 2026
Google logo
Google
Easy
Data Scientist Locked

Estimate weather’s effect on mental health

This question evaluates causal inference and applied statistical modeling skills—specifically defining outcomes and treatments, addressing confounding...

Statistics & MathCausal InferenceRegression & Statistical Modeling
58
0
486 people solved
Feb 7, 2026
Amazon logo
AmazonGoogleMetaMicrosoft

Also asked at Meta, Microsoft

Medium
Software Engineer

Equalize All Mirrored Pair Sums

Problem The array nums has even length. One move replaces one entry by an integer in [1,limit]. Make every mirrored pair (i,n-1-i) have the same sum, ...

Coding & AlgorithmsArrays & Strings
1
0
10 people solved
Vanta logo
Vanta
Medium
Software Engineer

Remove Global Duplicates While Preserving Order

Remove Global Duplicates While Preserving Order Implement global_unique(values). values is a list of strings. Return a new list containing the first o...

Coding & Algorithms
5
0
97 people solved
May 3, 2026
Amazon logo
AmazonJosh TechnologyMeta
Medium
Software Engineer

Add Values Whose Grandparent Is Even

Problem For each native binary-tree node, inspect its grandparent, meaning its parent's parent when it exists. Return the sum of values of exactly tho...

Coding & AlgorithmsTrees
0
0
9 people solved
Zoox logo
Zoox
Medium
Data Engineer

Design teleoperations data models and pipelines

You work on a fully autonomous robotaxi service. Passengers can request rides, get picked up, and get dropped off. During trips, the robotaxis are con...

System DesignDimensional ModelingData Ingestion & CDC
15
0
141 people solved
Apr 4, 2026
Google logo
Google
Medium
Software Engineer

Design autocomplete with Trie

Design and implement an autocomplete service backed by a prefix tree (Trie). The service stores a dynamic dictionary of words, each carrying an intege...

Coding & AlgorithmsData Structure DesignTrees
33
1
435 people solved
Sep 6, 2025
Meta logo
Meta
Hard
Machine Learning EngineerSenior+ AI Locked

Build a Friend Recommender

This question evaluates proficiency in graph algorithms, recommendation system logic, input validation, metric design, and test-driven software implem...

Coding & Algorithms
8
0
101 people solved
Mar 1, 2026
Brex logo
Brex
Hard
Software Engineer

Design Points-from-Transactions Service

Design a Scalable Loyalty Points Service (USD → Points at 1 USD = 1.5 Points) You are designing a service that awards loyalty points for purchase tran...

System DesignPayments & LedgersDistributed Transactions & Idempotency
108
0
787 people solved
Aug 14, 2025
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