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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
Ramp logo
Ramp
Medium
Frontend Engineer

Build a React Word-Guessing Game with Green, Yellow, and Red Letter Feedback

Build a small word-guessing game as a front-end project using React, written in JavaScript or TypeScript. The game has a fixed target word. Each time ...

Software Engineering FundamentalsReact & UI FrameworksArrays & Strings
2
0
36 people solved
Jan 28, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Take Ownership Through Ambiguity

Tell how you took ownership of an ambiguous problem involving goals, users, constraints, or responsibility. Show how you separated facts from assumpti...

Behavioral & Leadership
1
0
16 people solved
Aug 21, 2026
Mercor logo
Mercor
Medium
Software Engineer

Explain VPCs and private/public network connectivity

What is a VPC (Virtual Private Cloud)? Explain the difference between a private network and a public network/subnet. How do private subnets connect to...

System DesignCloud PlatformsNetworking
28
0
197 people solved
Jan 17, 2026
UiPath logo
UiPath
Easy
Frontend EngineerSenior+ Locked

Design State for a Three-Column Work Board

Design frontend state and update logic for a three-column ordered work board whose items can be added, deleted, reordered, and moved to a chosen posit...

Software Engineering Fundamentals
1
0
19 people solved
Aug 4, 2026
Citadel logo
Citadel
Medium
Software Engineer

Find earliest common meeting slot

Given K participants' calendars, each a list of busy intervals [start, end) within a working window [workStart, workEnd], and a meeting duration d min...

Coding & AlgorithmsIntervals & Scheduling
32
0
251 people solved
Sep 6, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Explain Anthropic motivation and leadership stories

Anthropic's non-technical loop for Software Engineers spans two distinct sessions: a Culture / values interview and a Hiring-Manager (HM) round that r...

Behavioral & LeadershipMotivation & FitProject Deep Dive
33
0
498 people solved
Feb 28, 2026
Databricks logo
Databricks
Medium
Software EngineerSenior+

Implement RLE and bit-packing compression

You are asked to implement two related compression/decompression schemes: Run-Length Encoding (RLE) and bit-packing. --- Part 1 — Run-Length Encoding ...

Coding & AlgorithmsArrays & StringsBit Manipulation
62
1
422 people solved
Oct 10, 2025
Google logo
Google
Medium
Software Engineer Locked

Count Clusters of 2D Points Within a Radius

This question tests graph traversal skills, specifically identifying connected components among a set of 2D points using distance-based adjacency. It ...

Coding & Algorithms
7
3
59 people solved
Jun 18, 2026
TikTok logo
TikTok
Medium
Data Scientist

Select max-discount product per category

You have a catalog of products. For each category, return exactly one product: the one with the largest absolute discount; if multiple products in the...

Data Manipulation (SQL/Python)
14
0
96 people solved
Oct 13, 2025
Optiver logo
Optiver
Hard
Software Engineer

Design a topic-based news subscription system

Topic-Based News Subscription Service — Design and Implementation Context Build an in-memory service that manages subscribers and delivers relevant ne...

System DesignSearch & Feed SystemsRate Limiting
83
0
1452 people solved
Sep 6, 2025
Google logo
Google
Medium
Data ScientistSenior+

Simulate Uniform(0,1) from random bits

Assume you have access to a function rand_bit() that returns 0 or 1 with equal probability and independent across calls. How would you generate a rand...

Coding & Algorithms
7
0
115 people solved
Nov 24, 2025
Databricks logo
Databricks
Medium
Software Engineer Locked

Design a Chat Application with a Partitioned Cache

Design a direct and small-group chat application with durable messaging, online delivery, offline catch-up, ordering, and duplicate handling. Examine ...

System DesignReal-Time SystemsCaching
6
0
106 people solved
May 27, 2026
Capital One logo
Capital One
Easy
Machine Learning Engineer Locked

How would you improve card-type detection?

This question evaluates a candidate's ability to design robust detection logic, covering system design, data modeling, validation, and operational con...

Software Engineering FundamentalsPayments & LedgersCode Quality & Maintainability
15
0
126 people solved
Feb 11, 2026
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad

Check Whether Every Course Can Be Completed Under Prerequisite Rules

There are n courses, labeled 0 to n - 1. Each pair [a, b] in prerequisites means that course b must be completed before course a can be taken. Courses...

Coding & AlgorithmsGraphs
0
0
6 people solved
Aug 17, 2026
Kikoff logo
Kikoff
Easy
Software Engineer Locked

Validate a Third-Party Identity Payload

Validate a documented third-party identity payload using four required matches and a caller-supplied set of blocked message codes. Separate parsing, s...

Software Engineering Fundamentals
2
0
53 people solved
Jun 27, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Debug a transformer training pipeline

Debug a Transformer training pipeline You are handed a PyTorch Transformer encoder–decoder training pipeline that misbehaves. The pipeline includes to...

Machine LearningML CodingNeural Networks & Training
70
0
1236 people solved
Jul 31, 2025
Databricks logo
Databricks
Medium
Software Engineer

Design IP/CIDR rule matcher

Design and implement a rule matcher that returns 'accept' or 'deny' for a given IPv4 address based on a set of rules. Each rule can be either an inclu...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
40
0
387 people solved
Sep 6, 2025
Google logo
Google
Medium
Software EngineerIntern

Answer project deep-dive and Why Google questions

Scenario This round is conversational (no coding). The interviewer asks about: - One or more personal projects (deep dive) - Internship experience and...

Behavioral & LeadershipProject Deep DiveMotivation & Fit
19
0
155 people solved
Jan 6, 2026
Snowflake logo
Snowflake
Medium
Frontend Engineer Locked

Build an Arrow-Controlled Kanban Board in React

Build an accessible React and TypeScript Kanban board whose arrow controls move tasks between ordered columns. Learn normalized state, destination-bot...

Software Engineering Fundamentals
3
0
40 people solved
Aug 3, 2026
Tradedesk logo
Tradedesk
Medium
Frontend Engineer

Object-Oriented Design of an Elevator Control System

Design an elevator control system using object-oriented design. Identify the classes and their responsibilities, show how a button press becomes an el...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
1
0
14 people solved
Sep 15, 2026
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