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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Snapchat logo
Snapchat
Medium
Machine Learning EngineerNew Grad Locked

Explain Core ML Concepts

This question evaluates understanding of foundational machine learning and deep learning concepts, including the bias–variance decomposition, differen...

Machine Learning
7
0
83 people solved
Feb 2, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Design a prompt processing backend

Design a prompt processing backend System Design: Background Processing Backend for LLM Prompts Context Design a multi-tenant backend that processes l...

ML System DesignJob Scheduling & WorkflowsMessaging & Event-Driven
17
0
215 people solved
Jul 26, 2025
Stripe logo
Stripe
Medium
Software Engineer

Discuss compensation expectations and flexibility

HR Screen — Compensation Expectations Context: Software Engineer, HR screen. For clarity, total compensation typically includes base salary, annual bo...

Behavioral & Leadership
8
0
71 people solved
Aug 14, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer II Locked

Explain Why You Are Changing Jobs and How You Communicated the Decision

Frame a job change honestly and constructively by connecting your next-step goals to the target role, handling manager communication professionally, a...

Behavioral & Leadership
1
0
13 people solved
Aug 8, 2026
Capital One logo
Capital One
Medium
Machine Learning Engineer

Rotate matrix and find max lamp coverage

1) Square-matrix rotation with extra space: Given an n x n integer matrix, return a new matrix that is the 90-degree clockwise rotation of the input. ...

Coding & AlgorithmsIntervals & SchedulingGrids & Matrices
17
0
113 people solved
Sep 6, 2025
Meta logo
Meta
Easy
Data Scientist

Calculate Posterior Fraud Probability Using Bayes' Theorem

Calculate Posterior Fraud Probability Using Bayes' Theorem Posterior Fraud Probability After a Flag Context You operate a fraud detection system that ...

Statistics & MathProbability
23
0
119 people solved
Aug 4, 2025
Verkada logo
Verkada
Medium
Software Engineer

Implement a JavaScript frame player controller

Implement a JavaScript frame player controller Implement a frame-by-frame browser media controller with drift-proof scheduling Context You are given a...

Software Engineering Fundamentals
11
0
87 people solved
Jul 15, 2025
Capital One logo
Capital One
Medium
Data Scientist

Aggregate exam scores with NULL handling

Write a single SQL query (or CTE pipeline) to satisfy all requirements using the schema and sample data below. Replace any vendor-specific function wi...

Data Manipulation (SQL/Python)
2
0
43 people solved
Oct 13, 2025
Optiver logo
Optiver
Medium
Software Engineer

Maximum Currency Conversion Rate

Maximum Currency Conversion Rate You are given N currency exchange rate pairs. Each pair is a triple (from_currency, to_currency, rate), meaning that ...

Coding & Algorithms
12
0
116 people solved
Jan 31, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Determine sanitized palindrome in string

Write a function that determines whether a string is a palindrome after removing non-alphanumeric characters and ignoring case (e.g., punctuation, whi...

Coding & Algorithms
10
0
92 people solved
Sep 6, 2025
Oracle logo
Oracle
Medium
Software Engineer Locked

Solve Five Coding Problems

This problem set evaluates proficiency in core algorithms and data structures, including graph traversal and connected-component identification, array...

Coding & Algorithms
9
0
61 people solved
Apr 7, 2026
Pinterest logo
Pinterest
Medium
Data Scientist

Clean and Aggregate Transactions for Finance Dashboard

transactions id | user_id | amount | timestamp | category 1 | 1001 | 19.99 | 2023-01-01 09:00:00 | grocery 2 | 1001 | 5.50 | 2023...

Data Manipulation (SQL/Python)
80
0
28 people solved
Jul 12, 2025
Disney logo
Disney
Medium
Data Scientist

Write complex SQL for streaming funnels

You are analyzing a Disney/Hulu product funnel with events captured in a single table. Write ANSI-SQL (Snowflake/BigQuery compatible) to answer the su...

Data Manipulation (SQL/Python)
2
0
32 people solved
Oct 13, 2025
Tesla logo
Tesla
Hard
Software Engineer

Design concurrency-safe shared payment account API

Design concurrency-safe shared payment account API Prevent Double-Spending When Two Users Pay Simultaneously from the Same Account Context You are des...

System DesignPayments & LedgersAPI Design
9
0
153 people solved
Jul 26, 2025
Meta logo
Meta
Medium
Data Scientist

Compute unconnected 60s posts and reactions averages

Given these tables and sample data, write SQL that answers both tasks below. Use today = 2025-09-01 and interpret "last/past 7 days" as the inclusive ...

Data Manipulation (SQL/Python)
4
0
31 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Compare Random Forests and Boosted Trees: Bias, Variance, Speed

Compare Random Forests and Gradient-Boosted Trees You are choosing and configuring tree-based ensemble models for a product-facing data-science proble...

Machine LearningSupervised Learning
160
4
279 people solved
Jul 12, 2025
Harvey logo
Harvey
Medium
Backend Engineer

Resolve conflict across teams

Describe a time when you had to coordinate between two teams that were in conflict or seriously misaligned. What caused the disagreement, how did you ...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
17
0
142 people solved
Feb 18, 2026
Capital One logo
Capital One
Medium
Data Engineer

Deep-dive XGBoost handling and overfitting

Technical / ML Deep Dive You used gradient-boosted decision trees (e.g., XGBoost/LightGBM) for a credit risk or response prediction problem. Answer th...

Machine LearningSupervised LearningModel Evaluation
25
0
207 people solved
Mar 1, 2026
Coupang logo
Coupang
Medium
Software Engineer

Sort products by price and attention score

You are given a list of strings, each formatted as "product,price,attention". Parse the list into records and return the product names sorted to prior...

Coding & AlgorithmsSortingData Cleaning & Wrangling
12
1
115 people solved
Aug 7, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Discuss your proudest project

Discuss your proudest project Behavioral prompt — Your most impactful project Context You are in a behavioral/leadership interview for a Software Engi...

Behavioral & Leadership
4
0
88 people solved
Aug 8, 2025
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