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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design reliable high-volume chatbot system

This question evaluates a candidate's ability to design scalable, highly available, and fault-tolerant backend architectures for stateful chatbot serv...

System DesignFault Tolerance & FailoverSystem Design Fundamentals
34
2
248 people solved
Dec 6, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Find lowest common ancestor

Question LeetCode 236. Lowest Common Ancestor of a Binary Tree — Given a binary tree, find the lowest common ancestor (LCA) of two given nodes. Follow...

Coding & Algorithms
20
0
121 people solved
Jul 29, 2025
Google logo
Google
Medium
Product Manager

Picking the First Industry for a Vertical AI Product: Law Versus Healthcare

In a product manager interview, you are asked to choose which of two industries, law or medicine, your team should target first with an AI or machine ...

Product / Decision MakingProduct StrategyAI Product Management
0
0
10 people solved
May 17, 2026
Axon logo
Axon
Medium
Software Engineer

Design analytical tracking database

Design analytical tracking database Design an Analytical Database for User Actions Context You are building an analytics data store to track user beha...

System DesignWarehouse & Lakehouse ArchitectureDimensional Modeling
33
0
262 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Product Manager

Product Sense: Designing a Product for Learning to Cook Without an In-Person Teacher

Design a product that teaches people how to cook when the learner and the teacher are not in the same kitchen. Explain who the product is for, what ma...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
7 people solved
Feb 17, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Design a simulator to replay left-turn videos

This question evaluates system design competency for building an end-to-end video replay and simulation service, including data modeling, event indexi...

System Design
10
0
80 people solved
Feb 11, 2026
DoorDash logo
DoorDash
Medium
Product Manager

DoorDash Rewards Program That Keeps Delivery Customers Coming Back

You are interviewing for a product manager role at DoorDash. Design a loyalty program for DoorDash customers whose purpose is better retention: keepin...

Product Design & StrategyGrowth & MonetizationMetrics & KPIs
0
0
9 people solved
Sep 20, 2026
Atlassian logo
Atlassian
Medium
Data Scientist

Find 2023 NCAA championship winner

You are given two tables. Schema: team(team_id INT PRIMARY KEY, team_name TEXT); game(game_id INT PRIMARY KEY, team_id INT, opponent_team_id INT, date...

Data Manipulation (SQL/Python)
4
0
34 people solved
Oct 13, 2025
Apple logo
Apple
Medium
Software Engineer Locked

Design ad click aggregator and file sync service

This question evaluates system design competencies in building scalable, reliable distributed services—covering high-throughput event ingestion and ag...

System DesignFile & Media StorageBatch & Stream Processing
26
0
292 people solved
Jan 22, 2026
Google logo
Google
Hard
Software Engineer Locked

Return top-k subset sums in descending order

This question evaluates proficiency in combinatorial reasoning, algorithmic optimization for large search spaces, and efficient extraction of top-k va...

Coding & AlgorithmsHeaps & Priority Queues
21
1
170 people solved
Jan 7, 2026
Google logo
Google
Easy
Data Scientist Locked

Build next-word predictor with O(1) lookup

This question evaluates skills in language modeling, data structures, algorithmic optimization, and probabilistic sampling, within the Coding & Algori...

Coding & AlgorithmsData Structure DesignArrays & Strings
12
1
125 people solved
Feb 2, 2026
Capital One logo
Capital One
Easy
Data Scientist

Calculate Incremental Customers for Marketing Spend Justification

Incremental Customers Needed for Marketing Spend You previously computed the per-customer annual profit for a new cardholder, excluding partnership ma...

Statistics & MathBusiness Case Analysis
61
1
112 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Engineer

Demonstrate ownership and conflict resolution

Demonstrate ownership and conflict resolution Behavioral: 0→1 Data Initiative, Prioritization, and Cross-Functional Leadership Context: Onsite intervi...

Behavioral & Leadership
10
0
78 people solved
Jul 15, 2025
Meta logo
Meta
Medium
Backend Engineer Locked

Design an Instagram-like platform

This question evaluates proficiency in scalable backend architecture, distributed systems, data modeling, media storage and processing, API design, fe...

System Design
7
0
94 people solved
Apr 8, 2026
ByteDance logo
ByteDance
Easy
Software Engineer

Describe Over-Engineering and UX Wins

After a project deep dive, the interviewer asked two behavioral questions: 1. Describe a time when you designed or implemented something that became m...

Behavioral & Leadership
5
0
86 people solved
Feb 1, 2026
Meta logo
Meta
Medium
Product Manager

Meta Pay: Metrics & Prioritization

Product Metrics and Prioritization Prompt: Meta Pay Assume you are the PM for Meta Pay, the consumer payments system used across Meta apps such as Mes...

Product / Decision Making
21
0
108 people solved
Jul 4, 2025
Optiver logo
Optiver
Medium
Software Engineer

Estimate expected comparisons in a BST

Estimate expected comparisons in a BST In a particular binary search tree, finding node A takes 1 comparison and finding node D takes 3 comparisons. W...

Coding & AlgorithmsTreesProbability
22
0
179 people solved
Jul 17, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Find list pair with maximum overlap

You are given N labeled lists of items as a Python dict mapping list_name -> iterable of strings. Example input: {'L1': ['A','B','C'], 'L2': ['A','C',...

Coding & AlgorithmsData Structure Design
8
0
151 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Defining DoorDash's North Star and Marketplace Health Metrics

Imagine you are a product manager at DoorDash. Which metrics would you treat as the most important for the company, and how would you organize them? `...

Analytics & ExperimentationMetrics & KPIs
0
0
9 people solved
Aug 6, 2025
Instacart logo
Instacart
Medium
Software Engineer

Validate password strength and repair

Given a password policy—length between 8 and 20 characters; must include at least one lowercase letter, one uppercase letter, and one digit; and must ...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
18
0
181 people solved
Aug 1, 2025
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