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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Citadel logo
Citadel
Hard
Data Scientist Locked

Solve Classic Probability Questions

This set evaluates probabilistic reasoning and expectation computation across topics such as sequential conditional survival, convolution of continuou...

Statistics & MathProbabilityPuzzles & Brainteasers
28
0
211 people solved
Feb 21, 2026
PayPal logo
PayPal
Medium
Software Engineer

Design a Cross-Border Money Transfer Service

Design a cross-border money transfer service similar to a consumer remittance product. Users in one country should be able to send money to recipients...

System Design
4
0
72 people solved
Apr 14, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Solve linked list, grid BFS, and median queries

This multi-part question evaluates proficiency in in-place linked list manipulation, reasoning about shortest connections between connected components...

Coding & AlgorithmsLinked ListsGrids & Matrices
28
0
341 people solved
Jan 22, 2026
Apple logo
Apple
Medium
Software Engineer

Optimize QA Benchmarks and Shared HPC Usage

A Software QA workflow runs benchmarks on shared high-performance computing (HPC) resources. How would you reduce resource usage and shorten turnaroun...

Software Engineering FundamentalsTesting & QualityJob Scheduling & Workflows
0
0
14 people solved
Mar 27, 2026
Expedia logo
Expedia
Hard
Software Engineer

Design a listing connectivity ingestion service

Scenario You are designing a Connectivity Service that allows external service providers (partners) to create or update listings in your company’s pla...

System DesignAPI DesignAuthentication & Authorization
6
0
121 people solved
Nov 5, 2025
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
27
1
191 people solved
Feb 12, 2026
Chime logo
Chime
Medium
Data Scientist

Analyze Acquisition Channels for User Value and Retention

acquisition | user_id | acquire_channel | acquire_date | | 101 | organic | 2023-01-05 | | 102 | paid_search | 2023-01-06 | | 103 | social_media | 2023...

Data Manipulation (SQL/Python)
101
0
360 people solved
Aug 4, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Evaluate New Feed-Ranking Algorithm with A/B Testing

A/B Test a New Feed-Ranking Algorithm A social-media company wants to evaluate a new feed-ranking algorithm intended to increase daily active minutes ...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
88
0
334 people solved
Jul 12, 2025
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Design a prompt-sharing platform

This question evaluates system design competencies including product and backend architecture, data modeling and indexing, permission and sharing mode...

System DesignSystem Design FundamentalsAuthentication & Authorization
28
0
298 people solved
Oct 19, 2025
Meta logo
Meta
Medium
Data Scientist

Resolve Conflicts and Convince Skeptical Stakeholders Effectively

Resolve Conflicts and Convince Skeptical Stakeholders Effectively Scenario You are an IC-level data scientist (IC5-or-below) working on fast-paced, cr...

Behavioral & LeadershipConflict & CollaborationLeadership & Influence
75
0
337 people solved
Aug 4, 2025
Databricks logo
Databricks
Hard
Software Engineer Locked

Find all anagram start indices

This question evaluates proficiency in string manipulation, algorithmic efficiency, and pattern detection through character frequency analysis, assess...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
18
1
168 people solved
Jan 7, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Answer multi-round grid and data-structure questions

You are given several independent interview-style coding questions. 1) Find first/last occurrence in sorted array (+ dynamic updates follow-ups) Given...

Coding & AlgorithmsBinary SearchData Structure Design
24
0
180 people solved
Oct 30, 2025
DoorDash logo
DoorDash
Medium
Machine Learning Engineer

How would you prevent wrong items in deliveries?

Behavioral / Product-Process Scenario You work on a food delivery platform. Customers sometimes receive the wrong items (restaurant packed incorrectly...

Behavioral & LeadershipProduct Design & ImprovementMetric Diagnostics
7
0
132 people solved
Oct 17, 2025
Jump Trading logo
Jump Trading
Medium
Machine Learning Engineer

Solve stock-pattern trading and substring elimination

Part A — Stock trading by pattern signals: - Input: an integer array prices (length n) of daily stock prices; an array buyPattern and an array sellPat...

Coding & AlgorithmsArrays & StringsStacks & Queues
8
0
165 people solved
Aug 1, 2025
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Determine Whether an Undirected Graph Is 3-Colorable

Determine whether a possibly disconnected undirected graph with up to 20 vertices can be colored using at most three colors so that adjacent vertices ...

Coding & Algorithms
7
0
49 people solved
Jun 12, 2026
Circle logo
Circle
Medium
Software Engineer

Implement a simplified multi-level banking system

Implement a simplified multi-level banking system Implement a simplified banking system with multi-level requirements. All operations accept a stringi...

Coding & AlgorithmsPayments & LedgersData Structure Design
19
0
165 people solved
Jul 17, 2025
Thumbtack logo
Thumbtack
Medium
Data Scientist

Compute weighted response rates by job category

You are given a CSV with one row per job posting and the following columns: job_id, job_category, invitations_sent (integer >= 0), provider_responses ...

Data Manipulation (SQL/Python)
2
0
33 people solved
Oct 13, 2025
Salesforce logo
Salesforce
Medium
Machine Learning EngineerSenior+

Build a concurrent site crawler

Implement a small crawler in Python for a single target website. Requirements: - Input: a start URL, a maximum crawl depth, and an output CSV path. - ...

Coding & AlgorithmsConcurrencyAPI Integration & HTTP Clients
11
0
110 people solved
Jan 12, 2026
Amazon logo
Amazon
Medium
Software Engineer

Answer behavioral questions about delivery and influence

Behavioral questions Prepare structured answers (e.g., STAR) to the following: 1. Complex problem, simple solution: Give an example of a complex probl...

Behavioral & LeadershipOwnership & ExecutionLeadership & Influence
17
0
131 people solved
Jan 6, 2026
Shield Ai logo
Shield Ai
Easy
Software EngineerSenior+ Locked

Count Pairs with the Minimum Absolute Difference

Count unordered index pairs whose values have the minimum absolute difference in an integer array. Sorting reveals the minimum gap, while duplicate ru...

Coding & Algorithms
1
0
22 people solved
May 25, 2026
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