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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
Liftoff logo
Liftoff
Medium
Software Engineer

Find degrees of connection in a LinkedIn graph

You are given an undirected graph representing professional connections: - n people labeled 0..n-1 - a list of undirected edges connections, where (a,...

Coding & Algorithms
7
0
74 people solved
Feb 26, 2026
PayPal logo
PayPal
Medium
Data Scientist

Analyze Transactions and Classify by Amount in SQL

transactions +---------------+---------+--------+---------+---------------------+-----------------+ | transaction_id| user_id | amount | status | ts ...

Data Manipulation (SQL/Python)
66
0
247 people solved
Aug 4, 2025
Squarepoint logo
Squarepoint
Medium
Data Scientist Locked

Explain derivatives, YTM, and core statistics

Explain derivatives, YTM, and core statistics evaluates statistical assumptions, formulas, estimation strategy, uncertainty, edge cases, and interpret...

Statistics & Math
9
0
88 people solved
Jul 25, 2025
Yelp logo
Yelp
Hard
Data Scientist

Design a Cold-Start-Aware Recommender

System Design: Two-Stage Recommender for a New Content App Context You are designing recommendations for a new content app with sparse interactions an...

Machine Learning
4
0
78 people solved
Oct 13, 2025
Google logo
Google
Medium
Software Engineer

How would you answer these behavioral prompts?

You are in a behavioral interview. Prepare structured answers (with concrete examples) for the following prompts. Expect follow-ups such as: Why was y...

Behavioral & Leadership
8
0
89 people solved
Jan 6, 2026
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Maximize revenue by choosing one query type

This question evaluates optimization and numerical reasoning skills, specifically selecting a single repetitive action to maximize aggregate revenue u...

Coding & AlgorithmsMath & Number Theory
20
0
149 people solved
Jan 1, 2026
Adobe logo
Adobe
Medium
Software Engineer

Find the Lowest Common Ancestor Only When Both Nodes Exist

Problem Given a binary tree and two target values, return the value of their lowest common ancestor only if both targets occur in the tree. Return nul...

Coding & Algorithms
2
0
26 people solved
Apr 19, 2026
Amazon logo
Amazon
Medium
Software Engineer

Minimum Moves for a Squirrel to Carry Every Nut to a Tree One at a Time

A squirrel and a tree are on a rectangular grid with height rows and width columns, and several nuts lie on other cells of the grid. The squirrel must...

Coding & AlgorithmsGreedy
3
0
23 people solved
Mar 11, 2026
Citi logo
Citi
Medium
Software Engineer

Walk through resume and impact

Behavioral Interview: Resume Walkthrough and Project Deep Dive You are in an onsite Software Engineer interview. Provide a concise, outcome-focused wa...

Behavioral & LeadershipProject Deep Dive
23
0
169 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Medium
Product Manager

Make a Specific, Evidence-Backed Case for Joining OpenAI as a Product Manager

You are interviewing for a product manager role at OpenAI, and the interviewer asks what makes you want to join the company. How do you answer? `hint ...

Behavioral & LeadershipMotivation & Fit
1
0
8 people solved
Dec 12, 2025
Google logo
Google
Medium
Product Manager

Redesign the Traveler Journey Through Airport Screening Checkpoints

Your task is to make going through security at an airport a better experience. Decide whose experience you are improving and at which kind of airport,...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
9 people solved
Mar 14, 2026
ByteDance logo
ByteDance
Hard
Machine Learning Engineer

Count Special Subarrays by Modular Frequency

You are given an integer array nums, and two integers modulo and target, where 0 <= target < modulo. Call an index i special if nums[i] % modulo == ta...

Coding & Algorithms
2
0
27 people solved
Oct 8, 2025
Stripe logo
Stripe
Medium
Software Engineer Locked

Design a Merchant Ledger Service

This question evaluates system design skills related to modeling monetary values, transactional integrity, idempotency, auditability, concurrency cont...

System DesignPayments & LedgersDistributed Transactions & Idempotency
22
1
271 people solved
Oct 7, 2025
Whatnot logo
Whatnot
Medium
Data ScientistSenior+

Compute a Seven-Day Rolling Average

Compute a Seven-Day Rolling Average Write one PostgreSQL SELECT statement or CTE query. Do not create, alter, or modify tables. Schema daily_metrics |...

Data Manipulation (SQL/Python)
2
0
39 people solved
Mar 30, 2026
Apple logo
Apple
Hard
Data Scientist

Telemetry and Metric Specs for a Connected Vending Machine with Recommendations

A team is developing an internet-connected vending machine with a companion app. The machine will recommend products to customers based on their purch...

Analytics & ExperimentationMetrics & KPIsData Ingestion & CDC
0
0
5 people solved
May 2, 2026
Salesforce logo
Salesforce
Hard
Software Engineer

Implement an LFU cache

Problem: LFU Cache Design and implement a Least Frequently Used (LFU) cache with a fixed capacity. The cache supports the following operations: - get(...

Coding & AlgorithmsData Structure DesignCaching
16
0
136 people solved
Dec 15, 2025
Meta logo
Meta
Medium
Product Manager

Behavioral: define the product manager's job and what doing it well looks like

An interviewer asks you what a good product manager role is. Give your view of what a product manager is responsible for and what separates doing the ...

Behavioral & LeadershipMotivation & Fit
0
0
11 people solved
Jan 3, 2026
OpenAI logo
OpenAI
Medium
Software EngineerSenior+ Locked

Design a Real-Time Online Chess Platform

Design the backend for a globally distributed real-time chess platform supporting moves, spectators, clocks, reconnects, and failover. Define authorit...

System DesignMultiplayer Game SystemsDistributed Coordination
6
0
73 people solved
May 23, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Solve Number of Islands

Question LeetCode 200. Number of Islands – Given a 2D grid of '1's (land) and '0's (water), count the number of islands. Follow-up: implement the solu...

Coding & AlgorithmsGrids & MatricesGraphs
10
0
123 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Compute Stock Profit with One or Unlimited Transactions

Problem Given daily stock prices, return two values: the maximum profit when at most one buy-sell transaction is allowed, and the maximum profit when ...

Coding & Algorithms
2
0
27 people solved
Feb 25, 2026
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