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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
OneMain Financial logo
OneMain Financial
Medium
Data Scientist

Optimize SaaS pricing and profit

SaaS Pricing: Linear Demand, Capacity Constraint, and Subscription Churn Context: You are pricing a single-seat SaaS product (one seat per customer pe...

Analytics & ExperimentationBusiness Case AnalysisGrowth & Monetization
8
0
83 people solved
Oct 13, 2025
Affirm logo
Affirm
Medium
Data Engineer

Write SQL for Transactions and Customers

You are given two tables: - customers(customer_id INT PRIMARY KEY, signup_date DATE, region VARCHAR, segment VARCHAR) - transactions(transaction_id IN...

Data Manipulation (SQL/Python)
4
0
46 people solved
Aug 1, 2025
Meta logo
Meta
Hard
Data Scientist

Manage promotions and project portfolio tradeoffs

Context You manage a 10-person Data Science team operating across multiple locations and time zones. Three senior individual contributors (ICs) are ac...

Behavioral & Leadership
6
0
55 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Influence Stakeholders for Product Decision at Meta

Influence Stakeholders for Product Decision at Meta Behavioral: Influencing Stakeholders To Drive a Product Decision Scenario Cross-functional product...

Behavioral & Leadership
5
0
50 people solved
Aug 4, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Parse a deeply nested JSON

Parse a deeply nested JSON Given a JSON document with approximately five levels of nesting, write code to traverse it and extract specified fields whi...

Data Manipulation (SQL/Python)Parsing & Interpreters
6
0
102 people solved
Aug 7, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design pickup point planning for ride-hailing

Design an algorithm and high-level system for recommending a pickup point in a ride-hailing app. A passenger requests a ride from an approximate city ...

System Design
11
0
88 people solved
May 28, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Explain Python, Java, and Memory Management

This question evaluates understanding of programming language concepts and runtime behavior—covering typing disciplines, runtime models, performance a...

Software Engineering Fundamentals
5
0
45 people solved
Feb 22, 2026
Meta logo
Meta
Medium
Software Engineer

Implement basic expression evaluator

Implement a function to evaluate a string expression containing non-negative integers, '+', '-', '*', '/', and spaces. Multiplication and division hav...

Coding & Algorithms
5
0
42 people solved
Aug 14, 2025
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
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
TikTok logo
TikTok
Medium
Backend Software Engineer

Implement Hash Map Operations

Implement Hash Map Operations Implement process_hash_map(operations) without using a built-in hash-map or dictionary type for storage. Each operation ...

Coding & Algorithms
1
0
19 people solved
Apr 12, 2026
Snowflake logo
Snowflake
Hard
Data Scientist

Present an end-to-end project and defend decisions

End-to-End Project Presentation + Deep-Dive Follow-ups Instructions (10 minutes, max 5 slides) Present an end-to-end project you led that shipped to r...

Behavioral & LeadershipProject Deep DiveMetrics & KPIs
7
0
84 people solved
Oct 13, 2025
Zest AI logo
Zest AI
Hard
Data Scientist

Compute tree depth and meeting rooms

Solve both coding problems. Problem 1: Maximum depth of a binary tree Given the root of a binary tree, return its maximum depth. The maximum depth is ...

Coding & Algorithms
2
0
31 people solved
Apr 5, 2026
Graham Capital logo
Graham Capital
Medium
Software Engineer

Explain project assumptions and validation methods

Assumptions, Validation, and End-to-End Process for an Analytics/Experimentation Project Context: You are describing a recent analytics/experimentatio...

Analytics & Experimentation
4
0
70 people solved
Sep 6, 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
8
0
72 people solved
Oct 13, 2025
Google logo
Google
Hard
Data Scientist

Explain logistic regression vs forests and boosting

Technical Screen — Machine Learning Answer all parts precisely. 1) Binary logistic regression: model, loss, gradient, convexity - Define the model: p(...

Machine LearningSupervised LearningML Fundamentals
19
0
163 people solved
Oct 13, 2025
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
Meta logo
Meta
Medium
Software Engineer

Design a real-time game leaderboard

Design a real-time leaderboard for an online game. Requirements: - Players submit score updates frequently. - Query top N players globally and per reg...

System DesignSystem Design FundamentalsReal-Time Systems
11
0
92 people solved
Feb 25, 2026
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
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
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