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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
Snowflake logo
Snowflake
Medium
Software Engineer

Decide Whether an Undirected Graph Can Be Colored with Three Colors

Given an undirected graph, decide whether every node can be given one of three colors so that no edge connects two nodes of the same color. Function S...

Coding & AlgorithmsGraphsBacktracking & Recursion
1
0
30 people solved
Apr 28, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Minimum Path Length Through a Grid With One Allowed Cell Conversion

This question evaluates a candidate's grasp of shortest-path search on grids, specifically breadth-first search extended with a limited state budget f...

Coding & Algorithms
12
0
127 people solved
Jun 30, 2026
Booking.com logo
Booking.com
Medium
Product Manager

Booking.com: Designing a Generative AI Trip Planner Around Traveler Preferences

You are a product manager at Booking.com. How would you apply generative AI to build a trip plan tailored to each traveler, using what they tell you a...

Product Design & StrategyAI Product ManagementMetrics & KPIs
1
0
11 people solved
Jul 29, 2026
Samsara logo
Samsara
Medium
Software Engineer

Parse Markdown Links Without Regex

Implement a function that converts simplified link syntax text into an HTML anchor tag <a href="url">text</a> across an entire input string. Constrain...

Coding & AlgorithmsParsing & Interpreters
28
0
220 people solved
Aug 1, 2025
DoorDash logo
DoorDash
Hard
Software Engineer Locked

Design a Food-Item Review System

Explore the data model, consistency, moderation, aggregation, and scale trade-offs behind a food-item review platform.

System Design
24
0
447 people solved
Sep 1, 2026
Amazon logo
Amazon
Medium
Frontend EngineerNew Grad Locked

Format a Forest of Nested Comments

Format an arbitrarily ordered forest of comments as deterministic preorder trees while preserving sibling order and drawing correct continuation and f...

Coding & Algorithms
6
0
58 people solved
Aug 22, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Implement matrix transpose and KV store

The phone screen for a Linux-oriented software engineering role included multiple coding tasks: 1. Transpose an n x n matrix Given a square matrix ...

Coding & Algorithms
8
0
121 people solved
Feb 9, 2026
Google logo
Google
Hard
Software Engineer Locked

Find Dictionary Matches for a Jammed String

This question evaluates string-processing and pattern-matching skills, specifically run-length grouping of consecutive characters and efficient dictio...

Coding & AlgorithmsString AlgorithmsArrays & Strings
18
1
176 people solved
Apr 9, 2026
Salesforce logo
SalesforceAgoda
Medium
Software Engineer

Maximum Team Size from Overlapping Availability

Maximum Team Size from Overlapping Availability You are given two arrays, startTime and endTime, each of length n. Employee i is available throughout ...

Coding & AlgorithmsIntervals & SchedulingBinary Search
2
0
16 people solved
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design an AI playground editor

This question evaluates full-stack system design competencies including real-time response streaming, rich-text editor data modeling, backend APIs, pe...

System DesignSystem Design FundamentalsLLM Applications
32
0
357 people solved
Apr 2, 2026
Tesla logo
Tesla
Medium
Software Engineer Locked

Balance Backend Availability, Maintainability, and Scalability

Discuss backend availability, maintainability, and scalability through workload requirements, failure handling, capacity limits, and measurable tradeo...

System DesignSystem Design FundamentalsFault Tolerance & Failover
2
0
24 people solved
Sep 1, 2026
PayPal logo
PayPal
Medium
Software Engineer

Design a Cross-Border Money Transfer Service

Design a cross-border money transfer service similar to a consumer remittance product. Users in one country should be able to send money to recipients...

System Design
5
0
84 people solved
Apr 14, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Investigate a Difficult Problem in Depth

Explain a difficult investigation through hypotheses, discriminating evidence, root cause, verified correction, and concrete follow-up learning.

Behavioral & LeadershipDebugging
3
0
22 people solved
Sep 14, 2026
DRW logo
DRW
Medium
Software EngineerIntern

Solve three algorithmic OA problems

This is an online assessment (Codility-style, 150 minutes) consisting of three independent coding problems. Solve each one separately; they do not sha...

Coding & AlgorithmsBacktracking & RecursionBit Manipulation
57
0
475 people solved
Oct 8, 2025
Rippling logo
Rippling
Medium
Software Engineer

Design an Extensible Expense Rule Engine

Design an Extensible Expense Rule Engine You receive expenses with fields such as expense_id, item_id, expense_type, amount_in_usd, seller_type, and s...

Software Engineering Fundamentals
4
0
78 people solved
May 3, 2026
PayPal logo
PayPal
Medium
Data Scientist

Write conditional aggregation SQL queries

Question Write an SQL query to compute the total amount for rows satisfying a condition, comparing approaches that use SUM(CASE WHEN … THEN … END) ver...

Data Manipulation (SQL/Python)
3
0
54 people solved
Aug 4, 2025
Google logo
Google
Medium
Software Engineer Locked

Find Containing Range

This question evaluates the ability to design appropriate data structures and apply algorithmic reasoning for efficient interval containment queries, ...

Coding & Algorithms
8
0
104 people solved
Jun 4, 2026
Uber logo
Uber
Medium
Machine Learning Engineer

Implement a Referral Revenue Tracker

Implement an in-memory revenue tracking system for customers in a referral network. Each customer has their own direct revenue. A customer may also ha...

Coding & AlgorithmsTreesData Structure Design
15
0
148 people solved
Apr 19, 2026
Amazon logo
Amazon
Medium
Software Engineer

Answer Repeated Range-Frequency Queries

Problem Implement a RangeFreqQuery object for a fixed integer array arr. Construct the object from the supplied array for later queries. Each call to ...

Coding & AlgorithmsData Structure DesignBinary Search
1
0
11 people solved
Virtu Financial logo
Virtu Financial
Hard
Quantitative Researcher Locked

Approximate a Rare-Event Binomial Probability

Approximate a rare binomial upper tail with a Poisson distribution. Derive lambda, use the complement through five events, and explain when the approx...

Statistics & Math
3
0
38 people solved
Aug 21, 2026
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