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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
Airbnb logo
Airbnb
Medium
Software Engineer

Compute split-stay listing pairs

Given a set of Airbnb listings, each with availability represented as a sorted list of day integers, and a requested inclusive date range [S, E], comp...

Coding & AlgorithmsIntervals & SchedulingBinary Search
72
0
699 people solved
Sep 6, 2025
C3 AI logo
C3 AI
Hard
Data Scientist Locked

Keep Gradient Descent from Stalling at Poor Solutions

Diagnose gradient descent that appears stuck. Separate local minima, saddles, plateaus, poor conditioning, learning-rate problems, and code defects, t...

Machine Learning
1
0
26 people solved
Aug 21, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Design an On-Demand Delivery Platform

Design an on-demand local delivery marketplace for restaurants or grocery stores. The platform should support customers browsing merchants, building s...

System Design
7
0
93 people solved
Apr 25, 2026
Google logo
Google
Medium
Software Engineer Locked

Find Earliest Fully Connected Time

This question evaluates a candidate's understanding of dynamic graph connectivity, time-ordered event processing, and state maintenance in graphs, inc...

Coding & AlgorithmsGraphs
37
2
514 people solved
Apr 5, 2026
Antra logo
Antra
Medium
Software Engineer Locked

Java and Object-Oriented Design Fundamentals

This question assesses mastery of software engineering fundamentals across object-oriented design, Java collections, and the Spring framework. It test...

Software Engineering Fundamentals
3
0
41 people solved
Jun 20, 2026
The Trade Desk logo
The Trade Desk
Medium
Software Engineer

Implement a Cloud Storage Service

Implement an in-memory cloud storage system. Build the class incrementally; later levels must preserve all behavior from earlier levels. File names ar...

Coding & Algorithms
13
0
93 people solved
Apr 10, 2026
Capital One logo
Capital One
Medium
Software EngineerSenior+

Place Pieces on a Grid

Given integers n and m, and an ordered list figures where each element is one of "A", "B", "C", "D", or "E", construct an n x m integer matrix grid. T...

Coding & AlgorithmsSimulation & State Machines
13
0
165 people solved
Feb 8, 2026
Crusoe logo
Crusoe
Medium
Software Engineer Locked

Calculate charge with a single price override

This question evaluates understanding of interval arithmetic, overlap detection and aggregation for time-based billing, plus careful edge-case handlin...

Coding & AlgorithmsIntervals & Scheduling
34
1
311 people solved
Feb 12, 2026
J.P. Morgan logo
J.P. Morgan
Easy
Software Engineer

Count substrings and generate TOC

Solve the following two coding problems. 1. Count valid binary substrings Given a string s consisting only of '0' and '1', count how many substrings s...

Coding & Algorithms
7
0
68 people solved
Jan 13, 2026
Databricks logo
Databricks
Medium
Backend Engineer

Find First Anagram Occurrence

Given two strings text and pattern, return the starting index of the first substring in text that is an anagram of pattern. If no such substring exist...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
19
0
190 people solved
Apr 2, 2026
Citadel logo
Citadel
Hard
Data Scientist

Solve probability and expectation problems

You are asked to solve the following probability and mathematical interview problems: 1. Squid Game glass bridge: There are B sequential bridge steps....

Statistics & MathProbabilityPuzzles & Brainteasers
55
0
563 people solved
Jan 30, 2026
Upstart logo
Upstart
Medium
Software Engineer

Solve Five OA Coding Tasks

This is an online-assessment screen consisting of five independent coding tasks. Each task is self-contained — there is no shared state between them —...

Coding & AlgorithmsArrays & StringsMath & Number Theory
21
0
407 people solved
Apr 10, 2026
Google logo
Google
Hard
Software EngineerSenior+ Locked

Solve order-statistics and XOR-triplet problems

This multi-part question evaluates skills in order-statistics and efficient counting for array inversion-like problems, alongside bitwise manipulation...

Coding & AlgorithmsBit Manipulation
27
0
257 people solved
Jan 22, 2026
Netflix logo
Netflix
Medium
Software Engineer

Find user pairs with overlapping last K movies

You are given the same user movie-watching histories as in the previous problem. Each user’s history is an ordered list of movie IDs from earliest to ...

Coding & AlgorithmsArrays & Strings
35
0
238 people solved
Dec 8, 2025
OpenAI logo
OpenAI
Hard
Software Engineer

How to answer common recruiter screen questions

Question You are in an initial recruiter / phone screen for a software engineering role at OpenAI. The recruiter asks a mix of logistics, employment-h...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
34
0
384 people solved
Feb 2, 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
Roblox logo
Roblox
Medium
Software Engineer

Implement queue-based rate limiter with multi-key limits

Implement a rate limiter with method allow(timestamp) that returns true if a request is allowed under a limit of K requests per rolling window W milli...

Coding & AlgorithmsData Structure DesignRate Limiting
27
0
350 people solved
Sep 6, 2025
Confluent logo
Confluent
Medium
Software Engineer

Implement tail N lines

Question Implement a utility tail(path: string, N: int) (and an equivalent stream variant) that prints the last N lines of input without loading the w...

Coding & AlgorithmsData Structure DesignOperating Systems
68
0
475 people solved
Sep 6, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Implement cloud storage with quotas and compression

Problem Implement an in-memory cloud storage service that supports multiple users, per-user storage quotas, changing quotas with eviction, and file co...

Coding & AlgorithmsData Structure Design
29
0
281 people solved
Dec 25, 2025
Amazon logo
Amazon
Medium
Frontend EngineerNew Grad Locked

Own a Mistake with Real Consequences

Tell a concrete story about a consequential mistake by owning the decision, tracing its impact, containing harm, communicating candidly, and showing t...

Behavioral & Leadership
0
0
12 people solved
Aug 22, 2026
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