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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
Optiver logo
Optiver
Medium
Software Engineer

Design an object-oriented queue and compare implementations

Design an object-oriented queue and compare implementations You are asked to design an object-oriented Queue abstraction and discuss how it can be imp...

Software Engineering FundamentalsData Structure Design
52
0
435 people solved
Jul 19, 2025
Google logo
Google
Medium
Software Engineer

Compute shortest paths with blocked nodes

Given a graph with nodes and edges and a designated source node s, compute the shortest distance from s to every other node. Some nodes are inaccessib...

Coding & AlgorithmsGraphs
27
0
187 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Product Manager

Uber Product Design: Making Large City Airport Trips Smoother for Travelers

You are a product manager at Uber. How would you improve things for passengers at a large, busy airport that serves a major city? `hint Walk the trave...

Product Design & StrategyProduct Design & Improvement
1
0
8 people solved
Jan 5, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Scale a rules engine for high traffic

This question evaluates understanding of scalable real-time system design, distributed architectures, consistency versus latency trade-offs, caching a...

System DesignSystem Design FundamentalsCaching
48
0
633 people solved
Feb 12, 2026
Etsy logo
Etsy
Easy
Machine Learning Engineer Locked

Explain Graph Recommendations and Vision-Language Model Training Trade-offs

Practice a Etsy machine learning interview question about explain graph recommendations and vision-language model training trade-offs. The prompt cove...

Machine Learning
2
0
27 people solved
Jun 13, 2026
BuildOps logo
BuildOps
Medium
Software EngineerSenior+

Senior Behavioral: Your Highest-Impact Project and a Hard Technical Problem You Solved

In the behavioral part of a senior software engineer loop, the interviewer asks about your own work in two ways. First, describe the project you consi...

Behavioral & LeadershipProject Deep Dive
1
0
13 people solved
May 6, 2026
MathWorks logo
MathWorks
Medium
Software EngineerNew Grad

Determine Whether P's Position Is Unique

You are given an R x C rectangular grid and a set of named entities. Each entity must be placed in exactly one distinct cell. You are also given a col...

Coding & AlgorithmsBacktracking & Recursion
8
0
119 people solved
Jan 22, 2026
Google logo
Google
Easy
Software Engineer Locked

Design a waitlist manager

This question evaluates object-oriented design and data-structure competency—modeling a FIFO waitlist API, managing unique party identifiers and edge ...

Software Engineering FundamentalsData Structure DesignStacks & Queues
14
0
121 people solved
Mar 1, 2026
Roblox logo
Roblox
Medium
Data Scientist

Analyze Recent Orders Dataset with Python/pandas

orders | order_id | user_id | price | created_at | |----------|---------|-------|------------| | 1 | 101 | 20.5 | 2024-01-01 | | 2 ...

Data Manipulation (SQL/Python)
42
0
32 people solved
Jul 12, 2025
Oracle logo
Oracle
Medium
Software EngineerSenior+

Maximum stock trading profit with at most k buy-and-sell transactions

You are given an integer k and a list prices, where prices[i] is the price of one share of a stock on day i. You may complete at most k transactions, ...

Coding & AlgorithmsDynamic Programming
2
0
14 people solved
Apr 3, 2026
The New York Times logo
The New York Times
Medium
Product Manager

Behavioral: aligning engineering, design and other functions on one project

In a product manager interview, you are asked to tell the story of a project you worked on with people from several functions, such as engineering, de...

Behavioral & LeadershipConflict & CollaborationLeadership & Influence
1
0
11 people solved
Apr 8, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Design an Event Booking System

This question evaluates system architecture, distributed systems, data modeling, concurrency control for seat inventory, transactional integrity for b...

System Design
5
0
80 people solved
Feb 22, 2026
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer

Why pursue full-stack engineering?

You are interviewing for a full-stack software engineering role. Explain why you are specifically interested in full-stack work instead of focusing on...

Behavioral & Leadership
14
1
110 people solved
Apr 6, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Design a packet reassembler API

Design a PacketAssembler API for Streaming Fragments Context and Assumptions - You are building a small component that assembles packets from a byte s...

System DesignData Structure Design
22
1
244 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Compute delivery times on a grid

You are given a 2D grid with cells marked as 'M' (warehouses), 'C' (customers), 'X' (obstacles), and '.' (roads). You can move up, down, left, or righ...

Coding & AlgorithmsGrids & MatricesGraphs
19
0
135 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design a GPU-Efficient Video Service

This question evaluates competency in designing GPU-constrained, production-grade ML serving platforms, emphasizing resource management, job schedulin...

ML System DesignGPU InfrastructureJob Scheduling & Workflows
14
0
127 people solved
Feb 23, 2026
Snapchat logo
Snapchat
Medium
Machine Learning Engineer Locked

Explain BatchNorm, optimizers, and L1/L2

This question evaluates a candidate's understanding of core machine learning fundamentals—Batch Normalization, optimizer behaviors (SGD, Momentum, RMS...

Machine LearningNeural Networks & TrainingML Fundamentals
10
0
126 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Data Engineer

Design a scalable dimensional model

Design a Dimensional Model for Transactional Analytics (Concrete Example Included) You are building a star-schema in a cloud data warehouse for near r...

System DesignDimensional ModelingStorage & Sharding
23
0
160 people solved
Sep 6, 2025
Capital One logo
Capital One
Easy
Data Scientist Locked

How do you compute expected return for two projects?

This question evaluates a candidate's ability to compute expected return and net present value by modeling probabilistic outcomes, cash flows, discoun...

Statistics & MathBusiness Case AnalysisProbability
12
0
110 people solved
Feb 12, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Validate parentheses with one or three bracket types

Problem Given a string s consisting only of bracket characters, determine whether it is valid. A string is valid if: - Every opening bracket has a cor...

Coding & AlgorithmsStacks & Queues
9
1
106 people solved
Oct 20, 2025
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