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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
Fetch Rewards logo
Fetch Rewards
Medium
Data Scientist

Handle unresponsive stakeholders and align metrics

You have 45 minutes, two interviewers are minimally responsive, and the problem statement is vague. Walk through how you will proactively drive clarit...

Behavioral & Leadership
15
0
123 people solved
Oct 13, 2025
Tesla logo
Tesla
Hard
Machine Learning Engineer

Implement attention and Transformer with backward pass

Implement Scaled Dot-Product Attention and a Transformer Block (No Autograd) Context: Build multi-head self-attention and a Transformer encoder-style ...

Machine LearningML CodingTransformers & Attention
60
0
540 people solved
Aug 12, 2025
DoorDash logo
DoorDash
Hard
Analytics Engineer

Find Maximum Window Sum

Given an integer array nums and an integer k, write code to find the maximum sum of any contiguous subarray of length exactly k. Assume 1 <= k <= len(...

Coding & AlgorithmsTwo Pointers & Sliding Window
9
0
112 people solved
Oct 12, 2025
Uber logo
Uber
Hard
Machine Learning Engineer

Design real-time grid ETA for drivers

Real-Time Grid-ETA System Design You are tasked with designing a real-time system that maintains the remaining ETA for every driver currently located ...

ML System DesignGeo & Delivery Systems
27
0
317 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Medium
Product Manager

Design an Airbnb Feature Powered by an External Partner API

You are a product manager at Airbnb and have been asked to add a new feature that Airbnb's users would find useful. The one firm requirement is that t...

Product Design & StrategyProduct Design & ImprovementTechnical Tradeoffs for PMs
1
0
9 people solved
May 30, 2026
Google logo
Google
Medium
Product Manager

North-Star and Guardrail Metrics for Measuring Android's Success as a Platform

Android is Google's mobile operating system, used by many phone manufacturers on their devices. How would you define success for Android, and which me...

Analytics & ExperimentationMetrics & KPIs
1
0
15 people solved
Dec 5, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer II Locked

Find the Maximum-Sum Contiguous Subarray

Find the maximum sum of a nonempty contiguous subarray in linear time and constant space, correctly handling all-negative input and 64-bit accumulated...

Coding & Algorithms
4
0
57 people solved
Aug 8, 2026
Uber logo
Uber
Medium
Software Engineer

Sort by squares and find k-th smallest

Given a nondecreasing sorted array of integers nums, do the following: 1) Reorder the original elements by increasing square value (equivalently, by a...

Coding & AlgorithmsTwo Pointers & Sliding WindowBinary Search
14
0
106 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Solve tree and DP problems

This coding round contained two algorithm questions: 1. Deepest shared ancestor in a binary tree You are given the root of a binary tree and two di...

Coding & AlgorithmsTreesDynamic Programming
50
0
349 people solved
Oct 24, 2025
Akuna Capital logo
Akuna Capital
Medium
Software Engineer

Heapify an array into a max-heap

Given the array [6, 15, 2, 4, 3, 8, 19], apply heapify to build a max-heap using the standard in-place bottom-up method with a 0-indexed array represe...

Coding & AlgorithmsHeaps & Priority Queues
12
0
121 people solved
Sep 6, 2025
Two Sigma logo
Two Sigma
Hard
Data ScientistIntern

Implement Univariate Linear Regression with Ordinary Least Squares

Implement univariate (simple) linear regression fitted in batch with the ordinary least squares (OLS) closed-form solution. You must implement the for...

Coding & Algorithms
3
0
47 people solved
Nov 15, 2025
Google logo
Google
Medium
Software Engineer Locked

Find where to cut cake into equal areas

This question evaluates geometric area computation, handling of piecewise-constant profiles formed by adjacent rectangles, and attention to numerical ...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
16
0
147 people solved
Jan 6, 2026
Meta logo
Meta
Hard
Data Scientist

Measure network effects and spillovers via experiments

Experiment design under network interference: direct and indirect effects Context You are evaluating a new social feature that can produce network spi...

Analytics & Experimentation
3
0
62 people solved
Oct 13, 2025
MongoDB logo
MongoDB
Medium
Software Engineer Locked

Design iterator for sorted union

This question evaluates algorithmic thinking and iterator-based streaming skills, focusing on merging strictly increasing inputs and deduplicating res...

Coding & AlgorithmsTwo Pointers & Sliding WindowData Structure Design
17
0
207 people solved
Feb 11, 2026
Okta logo
Okta
Medium
Frontend EngineerSenior+ Locked

Review Code for Memory Risks

This question evaluates competency in memory management, performance analysis, and code-review skills for frontend implementations that deduplicate ob...

Software Engineering FundamentalsCode Quality & MaintainabilityArrays & Strings
11
0
114 people solved
May 15, 2026
Google logo
Google
Medium
Product Manager

Designing a National Scorecard: North-Star Metric and Decade Targets for the US

In a Google product manager interview, you are asked to treat the United States as a product you are responsible for. Which metrics would tell you whe...

Analytics & ExperimentationMetrics & KPIs
1
0
10 people solved
May 26, 2026
Bloomberg logo
Bloomberg
Medium
Software EngineerSenior+ Locked

Minimize Travel Assignment Cost

This question evaluates algorithmic problem-solving in combinatorial optimization and dynamic programming, testing competency with cost-minimization, ...

Coding & Algorithms
7
0
74 people solved
Jun 1, 2026
Upstart logo
Upstart
Medium
Data Scientist

Analyze HT vs HH stopping-time probabilities

Coin-Flip Stopping Game: HT vs HH You repeatedly flip a coin until either the pattern HT appears (Player A wins) or the pattern HH appears (Player B w...

Statistics & MathProbabilitySimulation & State Machines
11
0
190 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Implement bank account with cashback

Implement a bank account processor. Given an initial non-negative integer balance B and a list of operations (n up to 1e 5), apply each operation in o...

Coding & Algorithms
6
0
113 people solved
Jul 29, 2025
Figma logo
Figma
Medium
Machine Learning Engineer Locked

Implement Layer History and Grid Counting

This question evaluates a candidate's proficiency in mutable state management and reversible operations through implementing an undo/redo layer editor...

Coding & AlgorithmsData Structure DesignGrids & Matrices
52
0
369 people solved
Mar 25, 2026
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