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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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 Scientist

Should Company Launch Vegan Burger Based on Profit Analysis?

Case: Launching a Vegan Burger — Unit Economics and Go/No-Go You are a data scientist supporting a product team that is deciding whether to launch a v...

Analytics & ExperimentationBusiness Case Analysis
146
0
787 people solved
Jul 12, 2025
Imc logo
Imc
Hard
Quantitative TraderNew Grad

Compute the Probability for Two Uniform Variables

Let \(X\) and \(Y\) be independent random variables, each uniformly distributed on \([0,1]\). Define: - \(L = \max(X,Y)\) - \(S = \min(X,Y)\) What is ...

Software Engineering FundamentalsProbabilityPuzzles & Brainteasers
13
0
140 people solved
Mar 5, 2026
Google logo
Google
Medium
Software Engineer

Find Players with Uniquely Determined Rankings

Find Players with Uniquely Determined Rankings Problem There are n players numbered 0 through n - 1. Each result (winner, loser) states that the winne...

Coding & Algorithms
4
2
56 people solved
Apr 19, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Account Balance with Expiring Grants

This question evaluates the ability to design a data structure that tracks time-limited credit grants, prioritizing expiration order during spending a...

Coding & Algorithms
4
0
60 people solved
Jun 23, 2026
Databricks logo
Databricks
Medium
Software Engineer

Design IP/CIDR rule matcher

Design and implement a rule matcher that returns 'accept' or 'deny' for a given IPv4 address based on a set of rules. Each rule can be either an inclu...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
40
0
387 people solved
Sep 6, 2025
Apple logo
Apple
Medium
Software Engineer Locked

Convert a BST to a Sorted Circular Doubly Linked List

Relink a binary search tree in place into a sorted circular doubly linked list using the existing child pointers. Return the smallest node, connect bo...

Coding & Algorithms
5
2
67 people solved
Jun 3, 2026
Kikoff logo
Kikoff
Easy
Software Engineer Locked

Validate a Third-Party Identity Payload

Validate a documented third-party identity payload using four required matches and a caller-supplied set of blocked message codes. Separate parsing, s...

Software Engineering Fundamentals
2
0
53 people solved
Jun 27, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Design a Hierarchical File System

This question evaluates understanding of scalable distributed storage and namespace architecture, covering metadata versus data separation, inode-like...

System DesignStorage & ShardingFile & Media Storage
82
0
759 people solved
Mar 15, 2026
Amazon logo
Amazon
Medium
Frontend EngineerNew Grad Locked

Intervene When Your Team Is Heading in the Wrong Direction

Show how you constructively challenged a risky team direction by validating the concern, proposing an evidence-backed alternative, hearing counterargu...

Behavioral & Leadership
1
0
24 people solved
Aug 22, 2026
eBay logo
eBay
Medium
Software Engineer Locked

Investing in Deliberate Professional Growth

Describe a deliberate professional-growth activity through the skill gap, chosen practice, feedback loop, and observable change it produced. The promp...

Behavioral & Leadership
1
0
13 people solved
Aug 19, 2026
Patreon logo
Patreon
Medium
Software Engineer

In-Memory Per-Second API Rate Limiter: Accept or Reject Each Request

An API endpoint is protected by an in-memory rate limiter. The limiter is created with one value, max_per_second, the largest number of requests it le...

Coding & AlgorithmsRate LimitingData Structure Design
0
0
8 people solved
Jul 14, 2026
Millennium logo
Millennium
Medium
Software EngineerIntern

How a C++ Mutex Protects Shared State

How does a mutex work in C++, and what must an application do for it to protect shared state correctly? Explain the language-level guarantee, a possib...

Software Engineering FundamentalsConcurrencyProgramming Languages
2
0
31 people solved
Apr 26, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Debug a transformer training pipeline

Debug a Transformer training pipeline You are handed a PyTorch Transformer encoder–decoder training pipeline that misbehaves. The pipeline includes to...

Machine LearningML CodingNeural Networks & Training
70
0
1233 people solved
Jul 31, 2025
Netflix logo
Netflix
Medium
Data ScientistIntern

Answer core probability and statistics questions

Answer the following interview-style probability/statistics questions. Provide formulas and short explanations. 1) Bayes’ rule: State Bayes’ rule. Giv...

Statistics & MathProbabilityHypothesis Testing
65
0
429 people solved
Mar 5, 2026
Oscar logo
Oscar
Medium
Software Engineer

Solve Morse and Network Access Tasks

Solve the following two independent coding problems. Problem 1: Convert Between Text and Morse Code You are given the standard Morse-code mapping for ...

Coding & Algorithms
8
0
99 people solved
Apr 15, 2026
Maven Securities logo
Maven Securities
Hard
Quantitative TraderNew Grad

Solve Graduate Trader Probability Questions

A graduate trader online assessment reportedly included the following quantitative reasoning, probability, and logic questions. Solve each problem. 1....

Software Engineering FundamentalsProbabilityPuzzles & Brainteasers
9
0
179 people solved
Jan 22, 2026
Google logo
Google
Medium
Software EngineerIntern

Answer project deep-dive and Why Google questions

Scenario This round is conversational (no coding). The interviewer asks about: - One or more personal projects (deep dive) - Internship experience and...

Behavioral & LeadershipProject Deep DiveMotivation & Fit
19
0
155 people solved
Jan 6, 2026
Waymo logo
Waymo
Medium
Software Engineer Locked

Design Reliable Command Delivery Between Autonomous Vehicles and the Cloud

Design reliable command delivery between a cloud control plane and intermittently connected autonomous vehicles. Cover targeting, durable queues, orde...

System Design
7
0
56 people solved
Aug 10, 2026
TikTok logo
TikTok
Medium
Data Scientist

Select max-discount product per category

You have a catalog of products. For each category, return exactly one product: the one with the largest absolute discount; if multiple products in the...

Data Manipulation (SQL/Python)
14
0
95 people solved
Oct 13, 2025
Databricks logo
Databricks
Hard
Software EngineerSenior+ Locked

Present a Technical Project Under Active Follow-Up

Present one technical project while responding to detailed follow-up questions without losing the larger system narrative. This behavioral deep dive e...

Behavioral & Leadership
7
0
64 people solved
May 10, 2026
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