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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
Glean logo
Glean
Medium
Software Engineer Locked

Return Top Department Suggestions

This question evaluates proficiency in prefix-based search and top-k ranking, familiarity with in-memory data structures and preprocessing strategies,...

Coding & Algorithms
16
0
103 people solved
May 17, 2026
Crusoe logo
Crusoe
Medium
Software EngineerSenior+

Print a binary tree as aligned text

Implement a function that prints (or returns) an ASCII layout of a binary tree. Requirements: - Each node has a string value (assume it contains no sp...

Coding & AlgorithmsTrees
34
0
427 people solved
Jan 1, 2026
Gimlet Labs logo
Gimlet Labs
Medium
Member of Technical Staff, ML Systems

Design a Text-to-Image Retrieval System

Interview Prompt Design a system where images are uploaded offline and users enter natural-language questions or descriptions to retrieve the most rel...

ML System Design
4
0
81 people solved
Apr 15, 2026
Anthropic logo
Anthropic
Hard
Machine Learning Engineer

Design an inference routing and scheduling layer

System Design: Routing Layer for Heterogeneous Inference Backends (GPU/CPU) Context You are asked to design a routing layer that sits between a user-f...

ML System DesignLLM Inference & ServingCaching
64
0
606 people solved
Sep 6, 2025
Squarepoint logo
Squarepoint
Hard
Data Scientist

How Does Removing Zeros Affect Sharpe?

Suppose a return series has 2n observations. Exactly n observations are 0, and the remaining n observations are non-zero returns x1, x2, ..., xn with ...

Statistics & MathProbability
19
0
148 people solved
Mar 27, 2026
Google logo
GoogleAmazonBloombergCoupang

Also asked at Bloomberg, Coupang

Easy
Software Engineer

Find the Largest Positive Value with a Negative Counterpart

Problem In nonzero integer array nums, find the greatest positive integer k for which both k and -k appear. Return k, or -1 if no such pair of values ...

Coding & AlgorithmsArrays & Strings
1
0
11 people solved
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer

Design comprehensive OA test cases

Designing Your Own Test Cases in an Online Assessment Context You are taking a timed technical online assessment (OA) for a software engineering role....

Behavioral & LeadershipTesting & Quality
50
0
407 people solved
Sep 6, 2025
Google logo
GoogleLinkedInOracle

Also asked at Oracle, Amazon, Flipkart, Salesforce

Medium
Software Engineer

Group Binary Tree Leaves by Removal Round

Group Binary Tree Leaves by Removal Round Given the root of a binary tree, repeatedly collect all current leaves, then remove those leaves. Continue u...

Coding & AlgorithmsTreesBacktracking & Recursion
1
0
14 people solved
Harvey logo
Harvey
Medium
Software Engineer Locked

Project Deep Dive + Core-Values Behavioral Round

This behavioral and leadership interview question evaluates a software engineer's ability to demonstrate genuine technical ownership through a deep di...

Behavioral & LeadershipProject Deep DiveFailure & Learning
23
0
220 people solved
Jun 20, 2026
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Schedule Fixed-Order Tasks with a Cooldown

Find the minimum calendar days needed to execute tasks in their fixed input order when repeated task IDs require a specified number of complete cooldo...

Coding & Algorithms
13
0
117 people solved
May 12, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design Restart Strategy for Oracle Solver

This question evaluates understanding of probabilistic runtime analysis and restart strategies for randomized (Las Vegas-style) solvers, including exp...

Machine LearningProbability
15
0
123 people solved
Jan 13, 2026
Whatnot logo
Whatnot
Medium
Data Scientist Locked

Debug a Python Aggregation Loop with Dictionaries and Lists

Review a Python aggregation routine that uses dictionaries, lists, and loops, then explain how you would make it correct and robust. This interview ex...

Software Engineering Fundamentals
14
0
110 people solved
May 23, 2026
Meta logo
Meta
Medium
Product Manager

Protecting People on Meta's Apps From Fraudsters: Product Sense Design

You are a product manager at Meta. Design a product that protects the people who use Meta's apps (Facebook, including Marketplace, Instagram, Messenge...

Product Design & StrategyTrust & SafetyProduct Sense
0
0
11 people solved
Sep 11, 2026
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Maintain a Moving Average with a Circular Buffer

Maintain one moving average per incoming value using the values seen so far until the window fills, then exactly the latest k values in a circular-buf...

Coding & Algorithms
11
0
83 people solved
May 12, 2026
Google logo
GoogleMicrosoftMeta

Also asked at Meta, Amazon, Bloomberg

Easy
Software Engineer

Could Each Child Have the Most Candies?

Problem For each child independently, imagine giving that child all extraCandies while leaving every other count unchanged. Return a boolean array ind...

Coding & AlgorithmsArrays & Strings
0
0
7 people solved
Snapchat logo
Snapchat
Hard
Machine Learning Engineer Locked

Choose Labels and Losses for Multiple Engagement Outcomes

Choose multi-label and multi-task losses using outcome semantics, conditional engagement funnels, missing-label masks, sampling, and calibration.

Machine LearningSupervised LearningModel Evaluation
4
0
32 people solved
Sep 9, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+

Maximum Profit Assigning Tasks to Exact-Skill Workers Plus One Wildcard Worker

A workshop has a pool of regular workers and a list of tasks. Each worker has an integer skill level, and each task has a required skill level and a p...

Coding & AlgorithmsGreedySorting
2
2
18 people solved
Jun 19, 2026
Google logo
Google
Hard
Frontend EngineerSenior+

Count Islands with Diagonal Connectivity

Count Islands with Diagonal Connectivity Given a binary grid, count the connected components of cells containing 1. Two land cells are connected when ...

Coding & Algorithms
5
3
61 people solved
Apr 14, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Explain an AI System You Designed and the Problem It Solved

Explain an AI system through its original problem, architecture, evaluation, safeguards, operational design, and measured impact. The prompt tests whe...

ML System Design
3
0
47 people solved
Aug 24, 2026
Infosys logo
InfosysMicrosoft
Medium
Software Engineer

Keep the Longest Subsequence with Bounded Alphabet Gaps

Problem Choose a subsequence of lowercase s such that every two neighboring retained letters differ by at most k in ordinary alphabet position. Return...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
9 people solved
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