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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
Akuna Capital logo
Akuna Capital
Medium
Software Engineer

Identify false MySQL foreign key statement

MySQL: Which of the following statements is false? A) A column might have a foreign key reference to itself. B) MySQL supports foreign key references ...

Data Manipulation (SQL/Python)
12
0
107 people solved
Sep 6, 2025
ByteDance logo
ByteDance
Hard
Software Engineer Locked

Course Schedule Feasibility

This question tests graph traversal skills and the ability to detect cycles in a directed graph, a core competency in algorithm interviews. It falls u...

Coding & Algorithms
1
0
15 people solved
Jun 20, 2026
Meta logo
Meta
Hard
Data Scientist

Quantify Latent Demand for Group Video Calling Feature

Quantify Latent Demand for Group Video Calling Feature Scenario A consumer messaging app is preparing to launch group video calling. You have access t...

Analytics & Experimentation
5
0
38 people solved
Aug 4, 2025
Snapchat logo
Snapchat
Medium
Software Engineer Locked

Compute maximum perimeter among islands

This question evaluates a candidate's proficiency with grid traversal, connected-component identification, and perimeter computation in binary matrice...

Coding & Algorithms
5
0
60 people solved
Oct 21, 2025
Wells Fargo logo
Wells Fargo
Medium
Data Scientist

Identify top exposures and mitigate

Identify top exposures and mitigate Portfolio Risk Identification and Mitigation Proposal Context You are evaluating a commercial/corporate lending po...

Machine Learning
3
0
71 people solved
Jul 26, 2025
Fidelity logo
Fidelity
Medium
Software Engineer

Compare Spring and Spring Boot

Compare Spring and Spring Boot What are the differences between Spring Framework and Spring Boot? Compare configuration approaches, auto-configuration...

Coding & Algorithms
6
0
70 people solved
Jul 31, 2025
Walmart Labs logo
Walmart Labs
Medium
Software Engineer

Provide self introduction, achievements, automation challenges, code quality, mentoring

Provide self introduction, achievements, automation challenges, code quality, mentoring Technical Screen: Behavioral and Leadership — Software Enginee...

Behavioral & Leadership
6
0
48 people solved
Jul 26, 2025
Capital One logo
Capital One
Medium
Data Scientist

Evaluate ROI and payback for renewables

You’re advising NorthGrid Energy on a utility-scale renewables investment with the following Year-1 economics unless noted: upfront capex = $50,000,00...

Statistics & Math
7
0
71 people solved
Oct 13, 2025
Bp logo
Bp
Medium
Data Scientist

Answer behavioral questions using STAR

bp Data Scientist Behavioral Questions Using STAR You are interviewing at bp for a Data Scientist role. Prepare structured, evidence-based answers usi...

Behavioral & Leadership
6
0
48 people solved
Jul 10, 2025
SoFi logo
SoFi
Medium
Software Engineer Locked

Format words into wrapped/justified lines

This question evaluates practical programming skills in string processing, greedy packing, and careful handling of spacing and edge cases, and falls u...

Coding & AlgorithmsArrays & StringsGreedy
20
1
222 people solved
Feb 12, 2026
SoFi logo
SoFi
Medium
Software Engineer

Explain GC, singleton, and OOP principles

Answer the following Java/software-engineering fundamentals questions: 1. How does Java garbage collection work at a high level (generational GC, mark...

Software Engineering FundamentalsMemory ManagementLow-Level Design (OOP)
11
0
121 people solved
Feb 4, 2026
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Design a scalable coffee ordering notification system

This question evaluates a candidate's ability to design scalable, real-time distributed systems with emphasis on order lifecycle management, reliable ...

System DesignSystem Design FundamentalsMessaging & Event-Driven
9
0
152 people solved
Feb 12, 2026
Otter.Ai logo
Otter.Ai
Medium
Data EngineerSenior+

Defend a Data Pipeline Architecture and Its Trade-offs

Prompt Choose one production data pipeline that you personally designed or substantially changed. Walk through its architecture, the requirements that...

System Design
1
0
28 people solved
Apr 2, 2026
Capital One logo
Capital One
Hard
Data Scientist

Prevent data registration outage and reduce loss

Preventing Silent Failures in the Premium Registration Pipeline Context A premium registration pipeline silently failed for three months, causing thou...

Behavioral & Leadership
6
0
73 people solved
Oct 13, 2025
Etsy logo
Etsy
Medium
Data Scientist

Implement streaming autocomplete under tight memory

Build an autocomplete service: Input: a list of up to 5,000,000 UTF-8 words (may include accents and hyphens), each with an integer popularity score t...

Coding & Algorithms
7
0
61 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Choose robust metrics for skewed comments

Robust central tendency and inference for zero‑inflated, heavy‑tailed counts You are evaluating an A/B test on per‑user daily comment counts. The outc...

Statistics & Math
11
2
84 people solved
Oct 13, 2025
Speak logo
Speak
Hard
Software Engineer

Design speaking scenarios and auth/profile API

System Design Task: Speaking-Scenario Practice Feature + MVP Auth API Context: You are designing a new speaking-scenario practice capability for a lan...

System DesignSystem Design FundamentalsAPI Design
7
0
141 people solved
Sep 6, 2025
Amazon logo
Amazon
Easy
Data Scientist Locked

How to evaluate adding video ads in a game

This question evaluates skills in product analytics, experimentation design, causal inference and monetization modeling for free-to-play mobile games,...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
4
0
86 people solved
Dec 9, 2025
Meta logo
Meta
Hard
Data Scientist

Evaluate fraud classifier with cost-sensitive metrics

Binary Fraud Classifier: Metrics, Thresholding, Calibration, and Online Evaluation You inherit a binary fraud classifier used to decide whether to blo...

Machine Learning
4
0
37 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Determine Features for Effective Hashtag Recommendations

Hashtag Recommendation System Design You are designing a hashtag recommendation system for a social-media platform. Given a user composing post conten...

Machine Learning
106
1
292 people solved
Jul 12, 2025
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