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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
GoogleAmazonMicrosoftBloomberg

Also asked at Microsoft, Bloomberg

Easy
Software Engineer

Count Followers for Each Observed User

Problem Return user_id and followers_count for each user represented as user_id in Followers. The unique (user_id,follower_id) pairs prevent duplicate...

Data Manipulation (SQL/Python)SQL
0
0
5 people solved
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Shortest Path in a Grid with Limited Obstacle Removal

This question evaluates a candidate's ability to extend classic breadth-first search into a state-augmented shortest-path problem, where the state inc...

Coding & Algorithms
1
0
25 people solved
Jun 17, 2026
Uber logo
Uber
Medium
Product Manager

Phased roadmap for Netflix's ad-supported plan and advertising business

Netflix offers an ad-supported plan alongside its ad-free plans. You are the PM who owns Netflix's advertising product. Lay out a product roadmap for ...

Product Design & StrategyRoadmapping & PlanningGrowth & Monetization
0
0
6 people solved
Sep 6, 2026
Google logo
Google
Hard
Software Engineer

Largest Subarray Sum with a Limited Number of Swaps

Largest Subarray Sum with a Limited Number of Swaps You are given an integer array nums and an integer k. You may perform at most k swaps. Each swap e...

Coding & AlgorithmsGreedyArrays & Strings
0
0
8 people solved
Qube Research & Technologies logo
Qube Research & Technologies
Medium
Software Engineer

Implement flat_map, redistribute wealth evenly

Implement flat_map, redistribute wealth evenly Implement std::flat_map in C++, including its iterator; explain design choices and add thorough test ca...

Coding & AlgorithmsProgramming LanguagesArrays & Strings
6
0
122 people solved
Aug 4, 2025
Uber logo
Uber
Medium
Data Scientist

Compute maximum concurrent trips from intervals

You’re given n trip intervals [start, end) in seconds, where start < end, representing when a rider’s trip starts and ends in a city on a specific day...

Coding & AlgorithmsIntervals & SchedulingSorting
24
0
245 people solved
Oct 13, 2025
Instacart logo
Instacart
Medium
Backend EngineerSenior+ AI

Clarify and Implement Search Filters for a Library Table

Clarify and Implement Search Filters for a Library Table An existing library-management application shows a book table that users find too long and di...

Software Engineering Fundamentals
9
0
81 people solved
May 2, 2026
Coinbase logo
Coinbase
Easy
Data Scientist

Evaluate campaign success and decide new trading pair

Context You are a Data Scientist at a crypto exchange. You work with Growth Marketing and Product to evaluate marketing spend and to make listing/laun...

Analytics & Experimentation
11
0
81 people solved
Sep 20, 2025
Two Sigma logo
Two Sigma
Medium
Data Scientist

Perform no-intercept linear regression from two datasets

You are given two pandas datasets to fit an OLS model without an intercept (through origin). Dataset A (features): df_X(user_id, clicks, impressions)....

Machine LearningRegression & Statistical ModelingPandas & Python Data
32
0
233 people solved
Oct 13, 2025
Bloomberg logo
BloombergMicrosoftAmazon
Easy
Software Engineer

Smallest Absent Positive Multiple

Problem You are given an integer array nums and a positive integer k. Return the smallest positive integer divisible by k that does not appear in nums...

Coding & AlgorithmsArrays & StringsMath & Number Theory
0
0
6 people solved
Revolut logo
Revolut
Medium
Product Manager

Revolut Activation Funnel: Plan a 15% Lift from Sign-Up to First Outgoing Payment

You are a product manager at Revolut. Revolut's onboarding journey starts when a new customer signs up and ends when that customer makes their first o...

Product Design & StrategyUser Behavior & FunnelsExperiment Design (A/B Testing)
1
0
18 people solved
Nov 22, 2025
DoorDash logo
DoorDash
Medium
Software Engineer Locked

Find the Minimum Parenthesis Deletions and Their Positions

Return the source indices for a minimum set of parenthesis deletions that leaves a valid sequence, choosing the lexicographically smallest index list ...

Coding & Algorithms
5
0
38 people solved
May 26, 2026
Oracle logo
Oracle
Easy
Software Engineer Locked

Implement a Paginated Medical-Record Filter Without Guessing an Ambiguous Rule

Implement a complete paginated medical-record filter only after resolving a contradictory blood-pressure rule in the supplied specification. Core skil...

Software Engineering Fundamentals
4
0
48 people solved
Jul 21, 2026
Google logo
Google
Medium
Software Engineer

Group movies via graph traversal

You are given n movies labeled 0..n-1 and a list of undirected pairs (a, b) meaning movies a and b are similar. Group all movies into categories where...

Coding & AlgorithmsGraphs
14
1
269 people solved
Sep 6, 2025
J.P. Morgan logo
J.P. Morgan
Easy
Software Engineer Locked

Design an Auditable Internal AI Chatbot

Design an auditable internal AI chatbot that retrieves only documents each user may access, limits retained context, resists prompt injection, and rec...

System Design
4
0
71 people solved
Aug 1, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Implement a Contiguous Memory Manager

This question evaluates competence in designing efficient data structures and algorithms for interval management, contiguous allocation and deallocati...

Coding & AlgorithmsData Structure DesignMemory Management
16
0
241 people solved
Jan 19, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Build a Removable Timestamp-Ordered Task Scheduler

Build a task scheduler that supports insertion, removal, and bounded popping in timestamp order, using smaller task IDs to break equal-timestamp ties.

Coding & Algorithms
9
0
90 people solved
Aug 20, 2026
NVIDIA logo
NVIDIA
Easy
Software Engineer

Design real-time fraud detection under 50ms

Design a real-time fraud detection system for a payments company that processes millions of transactions per day. Requirements: - For each incoming tr...

ML System DesignPayments & LedgersMLOps & Model Serving
18
0
128 people solved
Jan 15, 2026
Google logo
Google
Medium
Product Manager

Developer API Platform: Responding to a Viral Benchmark That Shows Rivals Are Faster

You are interviewing for a product manager role at Google and are given this scenario. You own a developer-facing API platform. A well-known tech infl...

Product / Decision MakingPlatform & API ProductsCommunication & Stakeholders
0
0
10 people solved
Oct 18, 2026
Confluent logo
Confluent
Medium
Software EngineerSenior+

Explain Linux Command Execution, Filesystems, and Isolation

Explain Linux Command Execution, Filesystems, and Isolation Walk through the operating-system mechanisms behind common Linux commands and isolation ch...

Software Engineering Fundamentals
9
0
105 people solved
Jan 1, 2026
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