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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Uber logo
Uber
Hard
Software Engineer

Prioritize rooms for allocation

System Design: Room Allocation and Ranking Service Context and assumptions: - The client sends a meeting request with: (a) time window or fixed start/...

System DesignRanking ModelsExperiment Design (A/B Testing)
20
0
135 people solved
Sep 6, 2025
Adobe logo
Adobe
Medium
Data Scientist

Solve SQL and Python Data Manipulation Tasks

UserEvents +----+---------+------------+------------+ | id | user_id | event_type | event_date | +----+---------+------------+------------+ | 1 | 101...

Data Manipulation (SQL/Python)
4
0
39 people solved
Aug 4, 2025
C3 AI logo
C3 AI
Hard
Data Scientist

Find longest substring with at least k repeats

Find longest substring with at least k repeats Longest substring where each character appears at least k times You are given: - a string s consisting ...

Coding & Algorithms
6
0
52 people solved
Aug 9, 2025
Meta logo
Meta
Hard
Data Scientist

Design and critique teen-parent impact experiment

Causal Impact of Parental Registration on Teen Outcomes Meta plans to let parents register and link to their teen’s account. Leaders are concerned abo...

Analytics & Experimentation
4
0
45 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Maximize Distinct Purchases Within Budget Constraints

Scenario Given a customer budget and a list of product prices, determine the maximum number of distinct products the customer can afford. Question Des...

Coding & Algorithms
31
0
73 people solved
Jul 12, 2025
Capital One logo
Capital One
Medium
Data Scientist

Determine Weekly Break-Even Point for Diaper Service

Diaper Service Unit Economics and Inventory Flow A weekly subscription diaper-delivery and cleaning service operates with these parameters: - Customer...

Analytics & Experimentation
70
0
246 people solved
Jul 12, 2025
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Design a food delivery system

This question evaluates system design competencies including distributed architecture, scalability, real-time event propagation, API and data modeling...

System DesignGeo & Delivery SystemsReal-Time Systems
20
0
249 people solved
Jan 22, 2026
Medium
Data Scientist

Write mini-batch gradient descent

Implement a generic mini-batch gradient descent routine: inputs are differentiable loss L(θ; x), initial θ0, batch size b, steps T, and learning-rate ...

Coding & Algorithms
6
0
57 people solved
Oct 13, 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
16 people solved
Mar 14, 2026
Oracle logo
Oracle
Medium
Data Scientist

Count Interior Islands After Flooding

You are given an m x n binary grid representing land and water. - 1 = land - 0 = water An island is a maximal group of land cells connected 4-directio...

Coding & Algorithms
3
0
44 people solved
Jan 9, 2026
Amazon logo
Amazon
Medium
Software Engineer

Demonstrate Bias for Action

Demonstrate Bias for Action Behavioral Prompt: Acting With Incomplete Data (Bias for Action) Describe a time you moved a project forward despite havin...

Behavioral & Leadership
5
0
43 people solved
Jul 15, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Solve BST and Grid Query Problems

This question evaluates understanding of binary search tree order-statistics and grid reachability under threshold constraints, testing competencies i...

Coding & Algorithms
7
0
58 people solved
Apr 19, 2026
Walmart Labs logo
Walmart Labs
Medium
Data Scientist

Find Index Pairs of Matching Elements in Arrays

Scenario Marketing analytics team needs to find common elements between two sorted arrays of user IDs. Question Given two sorted integer arrays withou...

Coding & Algorithms
6
0
90 people solved
Aug 4, 2025
Instacart logo
Instacart
Medium
Data Scientist

Justify Instacart fit and leaving your role

Behavioral HR Screen — Data Scientist Prompt Why Instacart specifically (vs. DoorDash/Uber Eats or your current company)? - Identify 2–3 Instacart pro...

Behavioral & Leadership
6
0
60 people solved
Oct 13, 2025
Parafin logo
Parafin
Medium
Software Engineer

Discuss leadership and conflicts

Discuss leadership and conflicts Behavioral & Leadership: Collaboration and Conflict Resolution Context You are interviewing for a Software Engineer r...

Behavioral & LeadershipConflict & CollaborationLeadership & Influence
16
0
91 people solved
Aug 4, 2025
Amazon logo
Amazon
Hard
Software EngineerSenior+

Discuss Ownership, Learning, Trust, Scope, and Delivery

Discuss Ownership, Learning, Trust, Scope, and Delivery Prepare evidence-based behavioral answers about ownership, learning, thinking broadly, earning...

Behavioral & Leadership
3
0
23 people solved
Jan 1, 2026
Adobe logo
Adobe
Medium
Software Engineer

Determine feasible task ordering

You are given n tasks labeled 0..n−1 and a list of dependency pairs (a, b) meaning task a requires task b to be completed first. Implement functions t...

Coding & Algorithms
9
0
63 people solved
Jul 31, 2025
Google logo
Google
Medium
Machine Learning Engineer

Design a Product or Video Recommendation System

Design a recommendation system for a large consumer platform. The platform may recommend either products in an e-commerce feed or videos in a media fe...

ML System DesignRecommendation SystemsRanking Models
29
1
201 people solved
Dec 24, 2025
Amazon logo
Amazon
Medium
Data Scientist

Explore Dataset to Assess Quality and Choose Visualizations

Understanding a New Dataset: Profiling, Quality, and Visualization You receive a new, unfamiliar dataset and must quickly generate insights and visual...

Analytics & Experimentation
30
0
130 people solved
Jul 12, 2025
Adobe logo
Adobe
Hard
Software Engineer

Design distributed word count without MapReduce

System Design: Distributed Word Frequency Counting (No MapReduce) Context You need to design a distributed system that computes word frequencies over ...

System DesignBatch & Stream ProcessingDistributed Transactions & Idempotency
9
0
139 people solved
Sep 6, 2025
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