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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Amazon logo
Amazon
Medium
Data Scientist

Evaluate Soft Skills Through Behavioral Interview Questions

Behavioral and Leadership Interview: Soft Skills You are interviewing for a Data Scientist role in an onsite Behavioral and Leadership round. Prepare ...

Behavioral & Leadership
114
0
333 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Software Engineer

Compute weighted sum of nested lists

Compute weighted sum of nested lists Given a nested collection that can contain integers or other nested collections, compute the depth-weighted sum w...

Coding & Algorithms
9
0
64 people solved
Aug 7, 2025
Point72 logo
Point72
Medium
Quantitative Researcher

Compare Missing-Value Strategies for Linear Models

Compare Missing-Value Strategies for Linear Models A continuous feature has missing values in a linear prediction problem. Compare three treatments: m...

Machine Learning
2
0
16 people solved
Jun 7, 2025
MathWorks logo
MathWorks
Medium
Software Engineer

Calculate tiered cost and break-even

Tiered Pricing and Shipping Cost Function You are ordering q units from a vendor with the following pricing: - Fixed setup fee per order: $500 - Unit ...

Statistics & Math
7
0
59 people solved
Aug 10, 2025
Cargurus logo
Cargurus
Medium
Data ScientistSenior+ Locked

Reverse a Character Array In Place

Practice an in-place character-array reversal under explicit restrictions on built-in helpers and extra storage. This coding exercise tests careful in...

Coding & Algorithms
2
0
20 people solved
Jun 22, 2026
Uber logo
Uber
Medium
Software Engineer

Solve vault rate and subset-sum

1) Robber vaults rate: You are given an array vaults of positive integers where vaults[i] is the amount in the i-th vault, and an integer h (hours). I...

Coding & AlgorithmsDynamic ProgrammingBinary Search
9
0
84 people solved
Sep 6, 2025
Amazon logo
Amazon
Hard
Data Scientist

Apply Double ML with text-address features

Estimate the ATE of a First Reminder on CSAT via Double Machine Learning (DML) Context You have observational data on customer satisfaction (CSAT) sur...

Machine Learning
9
0
72 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Engineer

Write SQL for active follow connections

Table: follow_events(requester_id INT, target_id INT, event STRING CHECK (event IN ('request_follow','follow_success','follow_reject','unfollow')), ev...

Data Manipulation (SQL/Python)
3
2
40 people solved
Aug 1, 2025
Meta logo
Meta
Medium
Data Scientist

Resolve cross-functional conflicts using analytics results

Answer the following behavioral prompts for a data science/product analytics role working cross-functionally (PM, Eng, Ads/Sales): 1) Describe a time ...

Behavioral & Leadership
3
0
41 people solved
Oct 14, 2025
Oracle logo
Oracle
Hard
Software Engineer Locked

Implement in-memory data structures and booking API

This question evaluates proficiency in data structures and algorithms, systems-level data modeling, and practical API design by testing in-memory key-...

Coding & AlgorithmsData Structure DesignLinked Lists
9
0
132 people solved
Feb 12, 2026
Uber logo
Uber
Hard
Software Engineer Locked

Solve two online assessment problems

This two-part prompt evaluates algorithmic problem-solving skills: the first problem tests optimization under index-based movement and number-theoreti...

Coding & AlgorithmsDynamic ProgrammingTrees
12
0
130 people solved
Mar 19, 2026
Apple logo
Apple
Medium
Software Engineer

Compute island size in grid

Compute island size in grid Given an m x n binary matrix grid of 0s (water) and 1s (land), where an island is a group of 1s connected 4-directionally,...

Coding & AlgorithmsGrids & Matrices
11
0
83 people solved
Aug 9, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Choose root to minimize edge reversals

This question evaluates understanding of directed versus undirected graph representations, tree rooting, and optimization of edge orientations, testin...

Coding & AlgorithmsTreesDynamic Programming
7
0
119 people solved
Feb 11, 2026
TikTok logo
TikTok
Hard
Data Scientist

Reflect on a challenging project you led

Behavioral Prompt: Leading an End-to-End Project That Changed a Product Decision Context: You are a Data Scientist interviewing for a consumer tech pr...

Behavioral & Leadership
3
0
54 people solved
Oct 13, 2025
Google logo
Google
Medium
Data Scientist

Address Overfitting in Supervised Learning Models

Address Overfitting in Supervised Learning Models You are evaluating a supervised learning model and observe that training performance is much better ...

Machine Learning
18
0
78 people solved
Jul 12, 2025
Amazon logo
Amazon
Easy
Data Scientist

Explain core ML concepts and metrics

You are interviewing for a Data Scientist role. Answer the following ML fundamentals questions clearly and concisely. Concepts 1. Explain the bias–var...

Machine LearningML FundamentalsModel Evaluation
11
0
103 people solved
Oct 11, 2025
Easy
Data Scientist Locked

How would you measure and experiment on harmful content?

This question evaluates a data scientist's competency in measuring and experimenting on harmful user-generated content, focusing on severity quantific...

Analytics & Experimentation
3
0
25 people solved
Feb 17, 2026
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Design a URL Shortener

This question evaluates a candidate's ability to design a scalable, highly available URL-shortening service, testing competencies in API design, short...

System Design
10
0
71 people solved
Mar 20, 2026
Two Sigma logo
Two Sigma
Easy
Data Scientist Locked

Merge two sorted lists

This question evaluates a candidate's competency in array manipulation and merging algorithms, emphasizing understanding of ordered data and time comp...

Coding & AlgorithmsTwo Pointers & Sliding Window
5
0
92 people solved
Feb 13, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

Design a ranking system pipeline

Answer the following ML system design questions: - Describe the machine learning system you know best. Walk through the problem definition, data sourc...

ML System Design
8
0
79 people solved
Jan 30, 2026
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