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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
Amazon logo
Amazon
Medium
Data Scientist

How would you evaluate adding video ads?

You are a data scientist for a free-to-play mobile game. The product team wants to introduce video ads (e.g., rewarded videos and/or interstitial vide...

Analytics & Experimentation
6
0
77 people solved
Nov 4, 2025
Meta logo
Meta
Easy
Data Scientist Locked

Compute this-year spend share of last-year whales

This question evaluates proficiency in data manipulation and analytics engineering, specifically SQL and Python skills for aggregations, joins, calend...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
5
1
44 people solved
Feb 15, 2026
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Implement cache and merge intervals

This question evaluates proficiency in designing and implementing efficient data structures (a fixed-capacity LRU key-value cache) and interval-proces...

Coding & Algorithms
4
0
48 people solved
Feb 23, 2026
Tinder logo
Tinder
Hard
Product Manager

Profile Customization for Millennials & Gen Z

Product Design Prompt: Profile Customization for Millennials and Gen Z You are a Product Manager at Tinder designing a new profile-customization featu...

Product / Decision Making
9
0
56 people solved
Jul 4, 2025
Meta logo
Meta
Medium
Data Scientist

Interpreting metrics when autoplay videos reduce time‑spent but increase DAU

Autoplay Snippets: Time Spent Down, DAU Up You are analyzing an A/B test where short autoplay video previews were enabled in feed. Per-session time sp...

Analytics & Experimentation
14
0
62 people solved
Jul 12, 2025
Microsoft logo
Microsoft
Hard
Software EngineerSenior+ Locked

Choose lock granularity for concurrent storage

This question evaluates understanding of concurrency control and lock-granularity trade-offs in concurrent storage components, including coarse-graine...

Software Engineering FundamentalsConcurrency
7
0
82 people solved
Jan 22, 2026
Meta logo
Meta
Medium
Data Scientist

Determine Facebook's Restaurant Recommendation Viability Using Data

Determine Facebook's Restaurant Recommendation Viability Using Data Facebook may launch a restaurant-recommendation product that helps people discover...

Analytics & Experimentation
7
0
38 people solved
Jul 12, 2025
Apple logo
Apple
Medium
Software Engineer

Compute island size in grid

Compute island size in grid Given an m x n binary matrix grid of 0s (water) and 1s (land), where an island is a group of 1s connected 4-directionally,...

Coding & AlgorithmsGrids & Matrices
11
0
80 people solved
Aug 9, 2025
Amazon logo
Amazon
Medium
Data Scientist

Choose Between JOIN, BLEND, and RELATIONSHIP in Tableau

Choose Between JOIN, BLEND, and RELATIONSHIP in Tableau Tableau Data Modeling, Filters, and Visual Design Scenario You are preparing a Tableau dashboa...

Analytics & Experimentation
94
0
259 people solved
Aug 4, 2025
Shield Ai logo
Shield Ai
Easy
Software EngineerSenior+ Locked

Count Pairs with the Minimum Absolute Difference

Count unordered index pairs whose values have the minimum absolute difference in an integer array. Sorting reveals the minimum gap, while duplicate ru...

Coding & Algorithms
1
0
16 people solved
May 25, 2026
Meta logo
Meta
Medium
Software Engineer

Solve word count, node, segmentation, stock tasks

You have four tasks: 1) Count words with explicit rules: Given a text document, return the number of words. First define precisely what qualifies as a...

Coding & Algorithms
5
0
56 people solved
Sep 6, 2025
Luma AI logo
Luma AI
Hard
Software Engineer Locked

Implement Refactoring Assessment Features

This question evaluates proficiency in implementing spec-driven algorithms and data structures in Java, covering route reconstruction (directed graph/...

Coding & Algorithms
2
0
22 people solved
May 25, 2026
XPeng logo
XPeng
Medium
Software Engineer Locked

Implement Stable Softmax

This question evaluates understanding of numerical stability, floating-point arithmetic, normalization, and probability distributions when computing s...

Coding & Algorithms
2
0
19 people solved
May 3, 2026
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Implement BST Iterator and Ticket Queue

This question evaluates understanding of binary search tree traversal and iterator design with amortized time and space analysis, as well as dynamic p...

Coding & Algorithms
2
0
50 people solved
Jan 24, 2026
Meta logo
Meta
Medium
Software Engineer

Design a nearby places (proximity) service

Design a proximity search service like Yelp/Google Maps. Requirements: - Store places with (place_id, name, lat/lng, category, rating). - Query: “find...

System Design
5
0
47 people solved
Feb 25, 2026
Amazon logo
Amazon
Medium
Data Scientist

Design Incremental Load Process for Large Relational Table

orders_daily_load +------------+-----------+-------------+--------+ | load_date | order_id | customer_id | amount | +------------+-----------+------...

Data Manipulation (SQL/Python)
87
0
230 people solved
Jul 12, 2025
TikTok logo
TikTok
Medium
Software Engineer Locked

Find longest common subsequence length

This question evaluates understanding of dynamic programming and sequence comparison algorithms by asking for the length of the longest common subsequ...

Coding & Algorithms
5
0
54 people solved
Jan 22, 2026
Amazon logo
Amazon
Medium
Software Engineer

Demonstrate leadership with STAR examples

Demonstrate leadership with STAR examples Behavioral (STAR) Prompts for a Software Engineer Onsite Context You are preparing for a Software Engineer o...

Behavioral & Leadership
8
0
57 people solved
Jul 31, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Implement Plus One

Given a non-empty array of digits representing a non-negative integer, where the most significant digit comes first and each element is in [0, 9], add...

Coding & Algorithms
5
0
67 people solved
Feb 13, 2026
Morgan Stanley logo
Morgan Stanley
Medium
Data Scientist

Estimate Greeks and hedging PnL

Consider a vanilla European option under the Black-Scholes framework. 1. Without using a calculator, explain how you would mentally estimate the optio...

Software Engineering Fundamentals
4
0
68 people solved
Dec 8, 2025
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