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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
Meta logo
Meta
Medium
Data Scientist

Build Predictive Model for Buyer Engagement Uplift

Predict Engagement Uplift for a New "Show Similar Products" Button A new "Show similar products" button may change buyer engagement. You need to build...

Machine Learning
11
0
64 people solved
Jul 12, 2025
ByteDance logo
ByteDance
Medium
Data ScientistIntern

Count Same-Day Registered Posters

You are given two tables: `text users - user_id: unique identifier for a user - registered_at: timestamp when the user registered posts - post_id: uni...

Coding & Algorithms
2
0
15 people solved
Mar 14, 2026
Meta logo
Meta
Medium
Data Scientist

Write SQL for revenue and advertiser analyses

Use the schema below and ANSI SQL. Treat “today” as 2025-09-01. Schema: - active_ads(date DATE, ad_id INT, advertiser_id INT, creation_source VARCHAR,...

Data Manipulation (SQL/Python)
2
0
17 people solved
Oct 13, 2025
Akuna Capital logo
Akuna Capital
Medium
Data Engineer Locked

Compute Graph Spread and Portfolio Trades

This question evaluates graph traversal and data-manipulation competencies, combining connected-component analysis on undirected graphs with map-based...

Coding & Algorithms
2
0
20 people solved
May 11, 2026
Meta logo
Meta
Medium
Data Scientist

Calculate Probabilities for Mixed Reviewer Types

Probabilities for Mixed Reviewer Types Two types of reviewers exist in a marketplace: - Lazy reviewers are 20% of reviewers and always give good revie...

Statistics & Math
85
0
235 people solved
Jul 12, 2025
DoorDash logo
DoorDash
Hard
Software Engineer

Design a distributed cron job scheduler

Design a distributed cron job scheduler System Design: Distributed Cron Job Scheduler Context You are designing a multi-tenant, internet-scale cron jo...

System DesignJob Scheduling & WorkflowsDistributed Coordination
20
0
253 people solved
Jul 28, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Compare first-score vs all-scores estimators

Compare two ways to estimate average survey score over a one-week window: the first in-window score per user and survey pair versus the average of all...

Statistics & Math
5
0
47 people solved
Oct 13, 2025
Asana logo
Asana
Medium
Software Engineer

Design a Twitter-like service

Design a simplified Twitter-like system that supports: - Users can post short messages (tweets). - Users can follow/unfollow other users. - Home timel...

System DesignSearch & Feed SystemsSystem Design Fundamentals
22
0
218 people solved
Jan 7, 2026
Amazon logo
Amazon
Medium
Data Scientist

Resolve a team conflict decisively

Tell me about a time you resolved a significant conflict within a team under time pressure. Include: 1) the root causes (interests, incentives, commun...

Behavioral & Leadership
4
0
42 people solved
Oct 13, 2025
Instacart logo
Instacart
Hard
Machine Learning Engineer Locked

Solve Two Sorted-Array Tasks

This question evaluates competency in array manipulation, handling of sorted data, search techniques and algorithmic complexity analysis, focusing on ...

Coding & Algorithms
7
0
90 people solved
Feb 10, 2026
TikTok logo
TikTok
Medium
Software Engineer

Design LRU cache with O(1) operations

Design and implement an in-memory cache that evicts the least recently used entry when capacity is reached. Support get(key) and put(key, value) in O(...

Coding & Algorithms
4
0
40 people solved
Sep 6, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Identify incorrect HTTP status code description

Which of the following descriptions about HTTP status codes is incorrect? Options: - A. 100 means the client should continue sending the request. - B....

Software Engineering Fundamentals
6
0
56 people solved
Oct 24, 2025
Meta logo
Meta
Medium
Product Manager

Core Behavioral Reflections

Core Behavioral Reflections for Product Managers Prepare concise, structured responses for four Product Manager behavioral prompts: professional failu...

Behavioral & Leadership
10
0
73 people solved
Jul 4, 2025
Meta logo
Meta
Medium
Software Engineer

Schedule and cancel delayed payments

Question Extend an existing in-memory payment system (immediate transfers between accounts, plus a top-N spenders/payers leaderboard) with scheduled p...

System DesignData Structure DesignHeaps & Priority Queues
14
0
126 people solved
Sep 6, 2025
Capital One logo
Capital One
Medium
Data Scientist

Explain Python Virtual Environment Setup and Function Analysis

Scenario Technical screen where candidate and interviewer jointly walk through Python code snippets used in a data-science repository. Question Show h...

Coding & Algorithms
58
0
25 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Data Scientist

Diagnose Bias–Variance Trade-off in Supervised Learning

Diagnose Bias–Variance Trade-off in Supervised Learning Supervised Learning Review (Customer-Facing Ranking Context) You are designing and evaluating ...

Machine LearningML FundamentalsProbability
57
0
221 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Implement power and balance-parentheses algorithms

Design and implement two algorithms: 1) Fast exponentiation: Implement a function pow(x, n) that returns a real number x raised to an integer exponent...

Coding & Algorithms
3
0
38 people solved
Sep 6, 2025
EY logo
EY
Hard
Data Scientist

Compare two FS domains deeply

Compare Two Financial Services Domains Context: You are interviewing for a data-focused role in financial services. Pick any two domains from the list...

Behavioral & Leadership
2
0
37 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Choose linear regression or decision tree appropriately

Choose Between Linear Regression and a Decision Tree Under a Hinge and Interaction DGP Context You have 100,000 i.i.d. observations with features x1 (...

Machine Learning
5
0
64 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Analyze User Engagement with SQL Queries

events +----------+---------+---------------------+ | event_id | user_id | event_time | +----------+---------+---------------------+ | 1 ...

Data Manipulation (SQL/Python)
107
0
298 people solved
Aug 4, 2025
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