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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
Akuna Capital logo
Akuna Capital
Medium
Data Scientist

Compute statistics in data stream

Question Design a data structure that supports computing the current max, mean, and mode for an unbounded integer data stream. Estimate the memory usa...

Coding & Algorithms
3
0
73 people solved
Aug 4, 2025
Google logo
Google
Medium
Software EngineerNew Grad

Describe teamwork and personal achievements

The interview included several behavioral questions: 1. Tell me about a time you helped a teammate who was underperforming. 2. Describe the most chall...

Behavioral & LeadershipMentoring & Team GrowthProject Deep Dive
23
0
246 people solved
Apr 1, 2026
Voleon logo
Voleon
Hard
Machine Learning EngineerSenior+

Explain the Bellman Equation

Explain the Bellman Equation State and explain the Bellman expectation and optimality equations. Show how they decompose value into immediate reward a...

Machine Learning
2
0
29 people solved
Jul 31, 2025
Snapchat logo
Snapchat
Hard
Software Engineer Locked

Check whether an integer is a power of two

This question evaluates proficiency in bit-level reasoning and integer arithmetic, specifically understanding binary representations and the propertie...

Coding & AlgorithmsBit Manipulation
7
0
77 people solved
Jan 2, 2026
EvenUp logo
EvenUp
Medium
Data Scientist

Build a model to predict wine quality

Modeling task: Predict wine quality from a CSV You are given a clean CSV dataset about red wine. The target (dependent) variable is: - quality (intege...

Machine LearningSupervised LearningFeature Engineering
14
0
156 people solved
Sep 24, 2025
Uber logo
Uber
Medium
Software Engineer

Design top-K tracker with linked lists

Design top-K tracker with linked lists Design a data structure that tracks the top-K most frequent keys in a stream. Support operations increment(key)...

Coding & AlgorithmsData Structure DesignLinked Lists
13
0
113 people solved
Aug 1, 2025
Amazon logo
Amazon
Medium
Software Engineer

Maximize credits with limited skips

You are given n warehouses with inventories inventory[0..n-1], and two dispatch amounts: you dispatch dispatch1 units first each turn, then your co-wo...

Coding & Algorithms
5
0
46 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Describe resolving conflict by persuading others

Describe a time you had a significant work-related conflict or disagreement with a teammate, stakeholder, or manager where you believed your approach ...

Behavioral & Leadership
3
0
72 people solved
Dec 8, 2025
Capital One logo
Capital One
Medium
Machine Learning Engineer Locked

Implement string/matrix simulations and counting pairs

This multi-part question evaluates implementation skills in string processing (case-insensitive substring matching), grid simulation with iterative ma...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
10
0
87 people solved
Jan 12, 2026
Salesforce logo
Salesforce
Hard
Software Engineer

Design an end-to-end recommendation system

Design an end-to-end recommendation system System Design Prompt: End-to-End Movie Recommendation System You are tasked with designing an end-to-end mo...

ML System Design
15
0
106 people solved
Aug 1, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

Find Maximum Candies With Two Types

You are given a row of candies represented by an array candies, where candies[i] is the type of the candy at position i. You may choose any starting p...

Coding & Algorithms
2
0
33 people solved
Apr 22, 2026
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
3
0
28 people solved
May 26, 2026
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Find the Lowest Common Ancestor in a Binary Tree

Find the lowest common ancestor of two values in an unordered binary tree represented in level-order form. Practice recursive subtree reporting to ide...

Coding & Algorithms
2
0
28 people solved
Jun 21, 2026
Meta logo
Meta
Medium
Data Scientist

Analyze User Comment Distribution and Sampling Effects

Analyze User Comment Distribution and Sampling Effects You are analyzing daily comment counts per user. The individual user-level distribution is righ...

Statistics & MathProbabilitySampling & Estimation
118
3
384 people solved
Jul 12, 2025
Meta logo
Meta
Hard
Data Scientist

Analyze Change in App Metrics and Feature Impact

Analyze Change in App Metrics and Feature Impact Scenario A consumer app has either launched a new feature or observed a sudden change in a key metric...

Analytics & Experimentation
5
0
51 people solved
Aug 4, 2025
First American logo
First American
Medium
Data Scientist

Describe Building and Deploying a Machine Learning Model

Describe Building and Deploying a Machine Learning Model Technical Onsite Scenario: End-to-End ML Project Deep Dive Prompt Describe a machine learning...

Machine Learning
8
0
62 people solved
Aug 4, 2025
Capital One logo
Capital One
Easy
Data Scientist

Compute Groupon unit economics and break-even

Question You run a restaurant with the following daily economics: - Baseline demand: 20 tables/day (assume one party per table) - Average pre-discount...

Statistics & MathBusiness Case Analysis
10
0
149 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Align Conflicting Stakeholders for Successful Project Delivery

Behavioral Interview: Aligning Conflicting Stakeholders Cross-functional projects often require coordination between data scientists, engineers, produ...

Behavioral & Leadership
15
0
75 people solved
Jul 12, 2025
Capital One logo
Capital One
Easy
Data Scientist

Handle priority changes and unclear deadlines

Behavioral scenarios (job fit / leadership) Answer the following situational questions. Use a structured approach (e.g., STAR: Situation–Task–Action–R...

Behavioral & Leadership
6
0
61 people solved
Sep 2, 2025
Yahoo logo
Yahoo
Medium
Data Scientist

Solve Data Structure Challenges with Python Algorithms

Scenario You are given coding challenges in Python to manipulate simple data structures. Question Remove duplicates from a list of integers while pres...

Coding & Algorithms
56
0
128 people solved
Jul 12, 2025
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