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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
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
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
DoorDash logo
DoorDash
Medium
Data Scientist

Write SQL for cuisine median delivery times

Use SQL to answer the following. Assume ANSI SQL with window functions and percentile functions available. Treat “today” as 2025-09-01 (inclusive). Co...

Data Manipulation (SQL/Python)SQL
24
1
188 people solved
Oct 13, 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
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
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
Uber logo
Uber
Medium
Software Engineer Locked

Design a meeting room reservation API

This question evaluates a candidate's object-oriented design and algorithmic competence for building an in-memory meeting room reservation API, focusi...

Software Engineering FundamentalsLow-Level Design (OOP)Intervals & Scheduling
24
0
196 people solved
Feb 12, 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
Snapchat logo
Snapchat
Medium
Software Engineer

Explain median vs mean for L1/L2

Median vs. Mean Under L1 and L2 Loss, and the 2D Extension Explain, with intuition and a brief derivation, the relationship between the choice of loss...

Statistics & MathSampling & Estimation
29
0
230 people solved
Sep 6, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Design a High-Frequency Job Scheduler

This question evaluates competency in distributed systems design, scheduling semantics (including high-frequency and recurring jobs), durable job stor...

System Design
7
0
58 people solved
Apr 10, 2026
Capital One logo
Capital One
Medium
Data Scientist

Merge ad CSVs and compute CTR

Using SQL, clean and merge four CSVs and answer all parts exactly. Schema and sample rows (assume types: date is DATE, others INT/VARCHAR): platforms(...

Data Manipulation (SQL/Python)
5
0
44 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Describe handling ambiguity and resolving design conflicts

Answer the following behavioral prompts with concrete examples (you can assume a software engineering role): Prompt A — Delivering with little guidanc...

Behavioral & LeadershipAmbiguity & Decision MakingConflict & Collaboration
16
0
116 people solved
Feb 12, 2026
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
Meta logo
Meta
Easy
Data Scientist Locked

Compute probability an account is fake

This question evaluates understanding of conditional probability and Bayesian reasoning, specifically interpreting base rates alongside true positive ...

Statistics & MathProbability
29
1
465 people solved
Jan 17, 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
Oracle logo
Oracle
Medium
Software Engineer

Walk through your resume and projects

Walk through your resume and projects Behavioral Prompt: Resume Walkthrough and Project Deep Dive (Software Engineer Onsite) Context You are interview...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
7
0
108 people solved
Jul 26, 2025
Lyft logo
Lyft
Medium
Software Engineer

Print the K-th non-empty line

Given a large UTF-8 text file, write a program that prints the K-th non-empty line. Do not load the whole file into memory. Specify how you handle fil...

Data Manipulation (SQL/Python)Operating SystemsProgramming Languages
17
0
154 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Engineer

Solve four algorithmic library problems

Solve the following coding tasks: 1) Maximum Points from Different Categories: Given an array of items (category, points) and an integer k, choose exa...

Coding & AlgorithmsGreedyArrays & Strings
16
0
158 people solved
Aug 13, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Reverse a Singly Linked List

This question evaluates a candidate's grasp of linked list pointer manipulation and in-place data structure transformation. It tests the ability to re...

Coding & Algorithms
4
0
38 people solved
Jun 18, 2026
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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