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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
Upstart logo
Upstart
Medium
Software Engineer

Find max word letter span

Implement a function that, given an input text string, computes the maximum word letter span and returns both (a) the maximum span and (b) the list of...

Coding & AlgorithmsArrays & Strings
32
0
287 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Machine Learning Engineer

Design a feed ranking system

Design a machine-learning-based feed ranking system for a consumer product. The system should rank candidate posts or items for a user's home feed in ...

ML System DesignRecommendation SystemsRanking Models
13
0
254 people solved
Mar 1, 2026
Google logo
Google
Hard
Machine Learning Engineer

Design multi-GPU matrix multiplication

Multi-GPU MatMul (2 GPUs): Design and Implementation You are given two GPUs connected via NVLink or PCIe. You must compute C = A × B where: - A is sha...

ML System DesignGPU Programming
16
1
256 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Design a distributed tree node counter

Design a distributed tree node counter Distributed Tree Node Count with Two Messages You are given an N-ary tree of machines (one process per node). E...

System DesignDistributed Coordination
67
0
608 people solved
Jul 26, 2025
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Choose the Cheapest Round Trip

Choose departure and return days that minimize a round-trip cost while requiring departure before return. Derive a linear scan that retains the best e...

Coding & Algorithms
3
1
37 people solved
Jul 6, 2026
Faire logo
Faire
Medium
Software Engineer

Find first 5-7-5 haiku in sentence

Find first 5-7-5 haiku in sentence Given a sentence containing mixed case and punctuation, and a syllable dictionary mapping lowercase words to their ...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
44
0
340 people solved
Jul 28, 2025
Google logo
GoogleMeta
Medium
Software Engineer

Best Alternating Sum of an Ordered Selection

Problem Choose a subsequence from the positive integers in nums while preserving their original order. Reindex the selected entries from zero, add tho...

Coding & AlgorithmsDynamic ProgrammingGreedy
0
0
8 people solved
DoorDash logo
DoorDash
Medium
Data ScientistSenior+ Locked

Evaluate a Bike-Delivery Pilot with Marketplace Metrics

A marketplace experimentation case about launching a bike-delivery option. Candidates select a city, quantify parking friction, define business and op...

Analytics & Experimentation
9
0
81 people solved
Jul 18, 2026
Concentric Ai logo
Concentric Ai
Medium
Software Engineer Locked

Maximize Profit Under a Bitwise-OR Limit

Choose a subset of items whose combined bitwise OR does not exceed a numeric limit and return the maximum total profit, with the empty subset availabl...

Coding & Algorithms
6
0
85 people solved
Aug 10, 2026
Clio logo
Clio
Medium
Software EngineerSenior+

Design a Cloud File Storage and Sync Service and Defend Your API and Latency Choices

You are asked to design a cloud file storage and synchronization service along the lines of Dropbox. Each user has a folder on every device they sign ...

System DesignFile & Media StorageAPI Design
3
0
40 people solved
Dec 30, 2025
Optiver logo
Optiver
Medium
Software Engineer

Solve quick probability questions

Rapid-Fire Probability Questions You are in a timed quantitative screen. Answer each of the following independent probability questions, ideally in we...

Statistics & MathProbability
34
0
603 people solved
Aug 13, 2025
Suno logo
Suno
Medium
Software Engineer

Describe product usage, feedback, and music experience

Behavioral: Product Usage, Feedback, and Music Background Context You are interviewing for a Software Engineer role at a music-tech company. Assume th...

Behavioral & LeadershipMotivation & FitProduct Design & Improvement
46
0
324 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software EngineerSenior+

Ownership Beyond Your Role: Stepping Outside Your Area and Driving an Improvement

This entry gathers the loop's ownership prompts: stepping into significant work nobody asked you to own, and spotting a way to improve the company and...

Behavioral & LeadershipOwnership & ExecutionLeadership & Influence
1
0
14 people solved
Apr 6, 2026
Jain Global logo
Jain Global
Medium
Data Engineer Locked

Model Effective-Dated Compliance Restrictions for Securities

Model effective-dated compliance restrictions across companies, countries, and securities in a versioned security master. Work through temporal schema...

System Design
4
0
43 people solved
Jul 26, 2026
Intuit logo
Intuit
Medium
Software Engineer

Find largest filename from ls -l output

You are given a multi-line string (via stdin) that represents the output of ls -l, with one entry per line. Each file line follows the typical ls -l f...

Coding & AlgorithmsParsing & Interpreters
6
0
120 people solved
Oct 13, 2025
Google logo
Google
Medium
Data Scientist

Estimate population singletons from a 10% log

A daily search log has one row per query string. You draw a 10% simple random sample of rows without replacement. Define a “unique query” (singleton) ...

Statistics & MathSampling & EstimationProbability
33
0
225 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Implement a Single-Node Priority Pub/Sub

Implement a simplified in-memory publish-subscribe system that runs on a single machine. The system should support users subscribing to topics with a ...

Software Engineering FundamentalsMessaging & Event-DrivenConcurrency
4
0
93 people solved
Apr 9, 2026
Lambda logo
Lambda
Hard
Software Engineer

Design and explain infra, K8s, routing, and fleet

System Design and Operations Deep-Dive Context: You are interviewing for a Software Engineer role with a focus on system design and engineering. Provi...

System DesignCI/CD & DeploymentContainers & Orchestration
30
0
205 people solved
Sep 6, 2025
Optiver logo
Optiver
Hard
Data Scientist

Find next terms in sequences

Pattern Recognition: Find the Rule and Next Term You are given 8 number sequences. For each sequence: - Identify a clear rule that generates the terms...

Statistics & MathPuzzles & Brainteasers
39
0
272 people solved
Sep 6, 2025
Harvey logo
Harvey
Medium
Backend Engineer

Resolve conflict across teams

Describe a time when you had to coordinate between two teams that were in conflict or seriously misaligned. What caused the disagreement, how did you ...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
19
0
156 people solved
Feb 18, 2026
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