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Master your tech interviews with 18,000+ real questions from top companies.

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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
Capital One logo
Capital One
Medium
Data Analyst

Set a Minimum Sale Price After Audience Loss and Reinvestment

Set a Minimum Sale Price After Audience Loss and Reinvestment A streaming business is considering selling The Analyst and using the opportunity to pur...

Analytics & ExperimentationBusiness Case Analysis
5
1
60 people solved
Sep 15, 2026
Microsoft logo
Microsoft
Hard
Machine Learning Engineer

Presenting a UX Proposal to an Engineering Team, and Defending an AI-Built Prototype

You are an engineer on a team made up of engineers plus one UI designer. In a project deep dive, the interviewer sets up a scenario: if you were asked...

Behavioral & LeadershipCommunication & StakeholdersProject Deep Dive
1
0
15 people solved
Oct 23, 2026
Apple logo
Apple
Medium
Software Engineer

Simulate a Fixed-Capacity Least-Recently-Used Cache over a Stream of Operations

Implement a key-value cache that holds at most capacity entries and, when it is full, evicts the entry that was used least recently. Run the cache ove...

Coding & AlgorithmsData Structure Design
6
0
77 people solved
Sep 17, 2026
Workday logo
Workday
Medium
Software Engineer

Project Deep Dive: Ownership, Releases, Redesign, Failure and Performance Work

A 45-minute hiring-manager interview for a Software Engineer II role was mostly a deep dive into your past projects plus behavioral questions. It also...

Behavioral & LeadershipProject Deep DiveFailure & Learning
0
0
5 people solved
Nov 8, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Data Scientist Locked

Count Smaller Numbers with Only Zero and One in Base Four

Count positive integers below a strict upper bound whose base-4 representation contains only zeros and ones, without scanning every smaller integer.

Coding & AlgorithmsMath & Number TheoryDynamic Programming
7
0
129 people solved
Sep 9, 2026
Render logo
Render
Medium
Software Engineer

Find the Five Busiest Client IPs in Request Logs

During an API traffic incident, find the five client IP addresses with the most completed request-log entries across several files. Ignore background-...

Coding & AlgorithmsParsing & InterpretersArrays & Strings
7
0
69 people solved
Sep 17, 2026
Wells Fargo logo
Wells Fargo
Hard
Data ScientistIntern

Using, Evaluating and Adapting a Pretrained Large Language Model

You are given a pretrained large language model. How would you use it, how would you evaluate it, and how would you adapt it to your needs? The interv...

Machine LearningLLM ApplicationsFine-Tuning & Alignment Techniques
3
0
30 people solved
Oct 6, 2026
DRW logo
DRW
Easy
Software EngineerIntern

Longest Substring in Which Every Present Letter Occurs Equally Often

A string is balanced if every letter that occurs in it occurs the same number of times. For example, "aabb", "abc" and "zzz" are balanced, while "aab"...

Coding & AlgorithmsArrays & Strings
4
0
46 people solved
Oct 1, 2026
Rippling logo
RipplingGoogleAmazon

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

Easy
Software Engineer

Measure the Deepest Parenthesis Nest

Problem The parentheses in s are balanced. Other characters are digits or arithmetic operator symbols. Return the largest number of simultaneously ope...

Coding & AlgorithmsStacks & Queues
3
0
37 people solved
Salesforce logo
Salesforce
Medium
Software EngineerSenior+ Locked

Fewest Add-or-Subtract Power-of-Two Steps to Reduce n to Zero

An integer problem: reduce a positive n to zero with the fewest operations, where each operation adds or subtracts a power of two. It tests reasoning ...

Coding & AlgorithmsBit ManipulationGreedy
9
0
126 people solved
Sep 22, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Diagnose I/O, Memory, and CPU Constraints

Describe concrete I/O-, memory-, and CPU-bound situations, including the measurements, changes, correctness checks, and outcomes for each bottleneck.

Software Engineering Fundamentals
13
0
109 people solved
Aug 30, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Design Monitoring and Reliability for 99.99% Availability

Design golden-signal monitoring and reliability controls for 99.99% availability, with indicators, error budgets, dependency analysis, and recovery te...

System DesignReliability & SREObservability
18
0
220 people solved
Sep 4, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Design a real-time 3D playback system for recorded vehicle logs

Design a system that plays back recorded vehicle log data as an interactive 3D scene. Each recorded drive is a set of logs of time-stamped data stored...

System DesignFile & Media StorageCaching
15
0
127 people solved
Sep 2, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Implement Masked Cross-Entropy with Label Smoothing

Implement numerically stable masked cross-entropy in NumPy with label smoothing and optional temperature scaling. Validate shapes, dtypes, finite logi...

Machine LearningML Coding
136
2
1167 people solved
Jun 27, 2026
Mistral AI logo
Mistral AI
Medium
Software Engineer Locked

Keep GPUs Fed with an Efficient Data-Preparation Pipeline

Diagnose GPU input starvation across storage, CPU preprocessing, batching, transfer, and synchronization, then improve bounded overlap while preservin...

Software Engineering FundamentalsML Data Pipelines & Feature StoresConcurrency
4
0
69 people solved
Sep 1, 2026
Okta logo
Okta
Medium
Software Engineer

Add a Paginated GET Endpoint to an Existing Java Service, Then Design Its Production DB

In a practical coding exercise on an online coding platform, you work inside a small existing service written in Java. The service already has a POST ...

Software Engineering FundamentalsAPI DesignIndexing & Query Performance
7
0
52 people solved
Sep 15, 2026
Faire logo
Faire
Medium
Product Manager

Faire Marketplace: Generating and Sizing Profitability Levers Before Committing to One

You are a product manager at Faire, the online wholesale marketplace that connects independent brands with independent retail stores. Pick a product t...

Product / Decision MakingGrowth & MonetizationBusiness Case Analysis
2
0
16 people solved
Oct 15, 2026
Upstart logo
Upstart
Medium
Software Engineer Locked

Compute Buffet Revenue with Waiting Guests and Repeat Visits

Simulate buffet seating, FIFO waiting, early departures, and repeat visits while charging each guest at most once per day.

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
12
0
134 people solved
Sep 12, 2026
Scale AI logo
Scale AI
Easy
Machine Learning Engineer Locked

Design an Embedding and Classification API

Design an API that generates text embeddings and optional compatible classifications for interactive and batch requests. Cover version contracts, prep...

ML System DesignMLOps & Model ServingAPI Design
72
0
844 people solved
Jul 27, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Merge Two Strings Using the Longest Edge Overlap

Compare both suffix-to-prefix concatenation orders, merge the longest edge overlap, and favor the original string order when overlap lengths tie.

Coding & AlgorithmsString Algorithms
13
0
196 people solved
Sep 10, 2026
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