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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
Disney logo
Disney
Medium
Data Engineer

Design a clickstream ingestion and aggregation pipeline for billions of events per day

Question You are designing the data platform for a large consumer streaming/media company. Client applications (web, mobile, smart TVs, set-top boxes)...

System DesignBatch & Stream ProcessingData Ingestion & CDC
17
0
223 people solved
Mar 27, 2026
Lambda logo
Lambda
Hard
Software Engineer

Design a cloud AI inference platform

System Design: Cloud AI Inference Platform for Real-Time and Batch Context Design a multi-tenant cloud platform that serves machine learning models fo...

ML System DesignMLOps & Model ServingGPU Infrastructure
18
0
305 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Software Engineer

Implement a match-3 board resolver

Question Implement a match-3 board resolver (the core loop of a "candy crush"-style game). You are given an m×n grid of cells. Each cell holds a value...

Coding & Algorithms
12
0
155 people solved
Jul 29, 2025
Turo logo
Turo
Hard
Data Scientist

Identify Booking Drivers

You are a Data Scientist at a peer-to-peer car-sharing marketplace. The team wants to understand which product, listing, host, renter, and market feat...

Analytics & Experimentation
7
0
59 people solved
Feb 5, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Minimum Months to Finish All Courses with Durations and Unlimited Parallelism

Courses are numbered 0 to n - 1. Course i takes time[i] months to complete, some courses can start only after others are complete, and any number of c...

Coding & AlgorithmsGraphsDynamic Programming
1
0
25 people solved
Apr 28, 2026
ZipHQ logo
ZipHQ
Medium
Software Engineer

Find flush and straight groups in cards

You are given an array of strings cards, where each string represents a distinct playing card. Each card string has the format <rank><suit>: - rank is...

Coding & AlgorithmsArrays & Strings
57
0
405 people solved
Nov 28, 2025
Google logo
Google
Hard
Software Engineer

Second Distinct Arrival Time with Synchronized Signals

Problem You are given a connected, undirected graph whose vertices are numbered from 1 through n. Traversing any edge takes time minutes. Every vertex...

Coding & AlgorithmsGraphsSimulation & State Machines
1
0
9 people solved
NVIDIA logo
NVIDIA
Medium
Software Engineer

Apply sliding window techniques

Apply sliding window techniques Explain the sliding window technique and apply it to solve: ( 1) Given an array of positive integers and a target S, r...

Coding & AlgorithmsTwo Pointers & Sliding Window
18
0
189 people solved
Aug 7, 2025
eBay logo
eBay
Medium
Data AnalystIntern Locked

Diagnose Declining Email Click-Through Rate

This question evaluates a data analyst's competency in metric definition and validation, funnel-based diagnostics, segmentation analysis, distinguishi...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
31
0
214 people solved
May 28, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Find invalid transactions in time-sorted input

Problem You are given a list of transaction records, already sorted in non-decreasing order by time. Each transaction is a string in the form: "name,t...

Coding & AlgorithmsTwo Pointers & Sliding Window
59
1
435 people solved
Dec 15, 2025
Waymo logo
Waymo
Medium
Software Engineer

Link Object Tracks Across Two Perception Systems and Merge Their Histories

Two perception systems, A and B, track objects in the same scene independently. Each system assigns its own ids to the objects it tracks, so one physi...

Software Engineering FundamentalsData Structure DesignGraphs
2
0
25 people solved
Apr 14, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Largest path sum in a binary tree with negative node values

A binary tree stores an integer, possibly negative, in each node. A path is a sequence of one or more distinct nodes in which every two consecutive no...

Coding & AlgorithmsTrees
1
0
17 people solved
Jul 28, 2026
Amazon logo
Amazon
Medium
Product Manager

Amazon Leadership Principles – Behavioral Deep Dive

Question This Amazon Product Manager onsite is a Leadership Principles (LP) behavioral loop: across several back-to-back interviewers you are asked ST...

Behavioral & LeadershipOwnership & ExecutionConflict & Collaboration
66
0
453 people solved
Jul 4, 2025
Remitly logo
Remitly
Easy
Software Engineer

How to prepare for a PM partnership round

You’re told an onsite loop has 4 rounds: 2 coding, 1 system design, and 1 “PM partnership” round. Question 1. How is a “PM partnership” interview diff...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
13
0
191 people solved
Jan 6, 2026
C3 AI logo
C3 AI
Medium
Data Scientist Locked

Explain the Gaussian Distribution and Its Limits

Explain the Gaussian distribution from density and standardization to affine closure and the central limit theorem. Learn when normality is useful, mi...

Statistics & Math
2
0
24 people solved
Aug 9, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer Locked

Solve small string and API tasks

This question evaluates proficiency in string algorithms (bracket validation and longest non-repeating substring) and practical API skills including H...

Coding & AlgorithmsStacks & QueuesAPI Integration & HTTP Clients
14
0
185 people solved
Feb 9, 2026
Oracle logo
Oracle
Medium
Backend EngineerSenior+ Locked

Resolve a Conflict Within Your Team

Describe a conflict within your team by explaining the substantive disagreement, why both positions were reasonable, how evidence guided the decision,...

Behavioral & Leadership
0
0
16 people solved
Aug 10, 2026
Google logo
Google
Medium
Product Manager

Sequencing Indoor Wayfinding Features for Google Maps in Airports and Malls

You are a product manager on Google Maps. Suppose Google decides to extend Maps beyond getting people to a building's entrance and into guiding them i...

Product Design & StrategyPrioritization & TradeoffsRoadmapping & Planning
1
0
11 people solved
Sep 17, 2026
Google logo
Google
Medium
Data Scientist

Derive MLEs and conditional Normal distributions

Normal and Bivariate Normal: PDFs/CDFs, MLEs, Conditioning, and Unbiased Variance Setup - Let X1, …, Xn be i.i.d. Normal(μ, σ²). - Independently, let ...

Statistics & MathSampling & EstimationProbability
12
0
153 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Engineer

Return top-3 content per category

Given a collection of items with fields (content_id, category, rating), implement top_k_by_category(items, k= 3) that returns, for each category, the ...

Data Manipulation (SQL/Python)
5
0
53 people solved
Aug 1, 2025
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