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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
10.05.2026
12.0k 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
TikTok logo
TikTok
Medium
Data Engineer

Explain Your Resume and Behavioral Examples

Behavioral & Leadership Technical Screen — Data Engineer Context You will be assessed on impact, decision-making under ambiguity, stakeholder manageme...

Behavioral & Leadership
6
0
72 people solved
Sep 6, 2025
Roku logo
Roku
Medium
Software Engineer Locked

Compute longest common subsequence length

This question evaluates understanding of dynamic programming and sequence processing, measuring competence in reasoning about optimal substructure, ov...

Coding & AlgorithmsDynamic Programming
8
0
98 people solved
Jan 8, 2026
Uber logo
Uber
Hard
Software Engineer

Check feasibility of AI course schedule

You are designing a learning path for n AI-related courses, labeled from 0 to n - 1. Some courses have prerequisites. For example, to take course b, y...

Coding & AlgorithmsGraphs
8
0
87 people solved
Nov 17, 2025
Meta logo
Meta
Medium
Data Scientist

Write SQL to compare exclusive category engagement

You are given session-level data and must compare engagement between users who exclusively used the 'social' category versus those who exclusively use...

Data Manipulation (SQL/Python)
2
0
17 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Data ScientistNew Grad Locked

Evaluate Promotions for Uber Eats Users

This question evaluates a data scientist's causal inference and experimentation competencies—including randomized trial design, treatment-effect estim...

Machine LearningExperiment Design (A/B Testing)
75
0
564 people solved
Apr 30, 2026
Uber logo
Uber
Medium
Frontend Engineer Locked

Simulate a Rank-Based Tournament

This question evaluates ability to simulate tournament pairing and single-elimination progression using array manipulation and data structures while p...

Coding & Algorithms
2
0
34 people solved
May 4, 2026
Capital One logo
Capital One
Medium
Data Scientist

Analyze your favorite app and improve it

Pick your favorite consumer app. a) Explain its monetization model and top two competitors with key differentiators. b) As CEO, define three north-sta...

Analytics & Experimentation
3
0
55 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Evaluate Key Metrics for Capital One Ad Campaign

Evaluate Key Metrics for Capital One Ad Campaign Streaming Ad Campaign Evaluation and ROI Comparison Context You are evaluating a credit-card marketin...

Analytics & Experimentation
10
0
79 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Implement tree column grouping and minimal parentheses fixes

Part A — Binary tree column grouping: Given the root of a binary tree, group node values by their vertical columns from leftmost to rightmost using x-...

Coding & Algorithms
5
0
47 people solved
Aug 13, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer Locked

Design a URL shortener

This question evaluates a candidate's ability to design scalable web services and systems architecture, covering data modeling, routing, and high-read...

System Design
3
0
40 people solved
Jan 29, 2026
Google logo
Google
Medium
Software Engineer

Answer common collaboration behavioral questions

Behavioral interview prompts Answer the following behavioral questions with concrete examples (use the STAR or CAR framework). Focus on your specific ...

Behavioral & LeadershipConflict & Collaboration
9
0
81 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Data Scientist

Analyze New Shops' Activity Compared to Existing Ones

shops +---------+------------+---------------+ | shop_id | created_at | category | +---------+------------+---------------+ | 1 | 2024-01-0...

Data Manipulation (SQL/Python)
54
0
24 people solved
Jul 12, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Describe handling conflict and a proud project

Behavioral interview prompts: 1. Tell me about a time you had a conflict with a teammate (e.g., disagreement on design, priorities, or code quality). ...

Behavioral & LeadershipConflict & CollaborationProject Deep Dive
12
0
87 people solved
Jan 14, 2026
Wtw logo
Wtw
Easy
Data Scientist Locked

Explain normal distribution and standardize it

This question evaluates understanding of the Gaussian (normal) distribution and the concept of standardization, assessing competencies in probability ...

Machine Learning
1
0
25 people solved
Jan 22, 2026
Capital One logo
Capital One
Hard
Data Scientist

Describe best team and complex project

Behavioral & Technical Deep-Dive Part 1 — Best Team You Worked On Describe a high-performing team you were part of. Include: 1. Mission and business i...

Behavioral & Leadership
7
0
71 people solved
Oct 13, 2025
Airtable logo
Airtable
Medium
Software Engineer Locked

Design a scalable search service with sharding

This question evaluates understanding of search system architecture, including indexing, querying, and sharding strategies, and measures competency in...

System DesignSearch & Feed SystemsPartitioning & Consistent Hashing
12
0
243 people solved
Jan 22, 2026
Uber logo
Uber
Hard
Data Scientist

Design an RCT for app-open discount

Design an RCT for an "X dollars off on app open" promotion in a two‑sided marketplace Context You operate a two‑sided marketplace mobile app (e.g., ri...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
7
0
117 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Evaluate Chatbot's Retailer Value and Launch Viability

Evaluate Chatbot's Retailer Value and Launch Viability Scenario You are evaluating whether to launch a B2C chatbot for retailers on a commerce messagi...

Analytics & Experimentation
2
0
55 people solved
Aug 4, 2025
Atlassian logo
Atlassian
Medium
Machine Learning Engineer Locked

Design O(1) cache and moving average

This question evaluates proficiency in data structures and streaming algorithms by combining an O(1) cache design with an eviction policy and a fixed-...

Coding & Algorithms
6
0
71 people solved
Jan 22, 2026
Yahoo logo
Yahoo
Medium
Data Scientist

Merge words by head-tail chaining

Given a list of lowercase words, merge them into a single string by repeatedly chaining words where the last character of the current string equals th...

Coding & Algorithms
6
0
51 people solved
Oct 13, 2025
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