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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
Shopify logo
ShopifyAmazonGoogle

Also asked at Google, Microsoft, Apple

Medium
Software Engineer

Simulate Obstacle-Aware Robot Moves and Track the Farthest Point

Problem A robot starts at (0,0) facing north on an unbounded integer grid. Commands -2 and -1 turn90 degrees left and right. A command1 through9 advan...

Coding & AlgorithmsSimulation & State Machines
2
0
20 people solved
Uber logo
Uber
Medium
Software Engineer

Determine balanced k values in a permutation

You are given a permutation p of the integers 1..n. For a number k (where 1 <= k <= n), call k balanced if there exists a contiguous subarray p[l..r] ...

Coding & AlgorithmsTwo Pointers & Sliding Window
56
0
457 people solved
Feb 11, 2026
Anduril logo
Anduril
Medium
Software Engineer Locked

Design a Small-Scale URL Shortener with Collision Handling

Design an in-memory URL shortener that returns stable codes for repeated URLs and preserves every mapping through collisions. Work through open addres...

System Design
8
0
93 people solved
Aug 2, 2026
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer Locked

Find a Local Minimum in One and Two Dimensions

This Hudson River Trading software engineering question covers finding a local minimum in one and two dimensions. It prepares candidates to compare se...

Software Engineering FundamentalsBinary Search
58
1
523 people solved
Jul 2, 2026
Airwallex logo
Airwallex
Medium
Software Engineer Locked

Merge Hundreds of Paginated Sorted Sources into One Deduplicated Record Stream

Coding question that asks you to merge records from hundreds of offset/limit paginated sources into one globally sorted, deduplicated stream written o...

Software Engineering FundamentalsHeaps & Priority QueuesAPI Integration & HTTP Clients
11
0
79 people solved
Sep 10, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Build an Account Transfer Ledger

This question evaluates the ability to implement transaction processing, state management, validation of transfers (including rejects and platform len...

Coding & AlgorithmsPayments & LedgersData Structure Design
35
0
539 people solved
Mar 13, 2026
Pinterest logo
Pinterest
Hard
Software Engineer

Design Bulk CSV and Individual Record Updates with Reliable, Partitioned Processing

Design a system that lets customers change their records in two ways: - Individual updates: change one record at a time through an API or a form in th...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
4
0
45 people solved
Jul 7, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Assign Each Person the Nearest Cake in a One-Dimensional Row

People and cakes stand in a single row of positions, described by an integer array whose values are 0, 1 or 2. The original question asks for the clos...

Coding & AlgorithmsArrays & Strings
3
0
42 people solved
Apr 28, 2026
Box logo
Box
Easy
Software Engineer

Implement a Leaky Bucket Rate Limiter

Implement a leaky bucket rate limiter. You are given a class template for a rate limiter that controls whether incoming requests should be accepted or...

Coding & Algorithms
21
0
188 people solved
Apr 17, 2026
Amazon logo
AmazonAppleGoogle

Also asked at Google, Microsoft, Meta, Bloomberg, Samsung, LinkedIn, TikTok, Lime, Uber

Medium
Software Engineer

Decide Whether an Undirected Graph Can Be Two-Colored

Problem graph is an undirected adjacency list that may be disconnected. Decide whether its vertices can be split into two sets so that every edge join...

Coding & AlgorithmsGraphs
0
0
15 people solved
Snowflake logo
SnowflakeAmazonGoogle

Also asked at Google, Goldman Sachs, Arista Networks, Salesforce, BNY Mellon, IMC, Apple, Microsoft, Oracle, Coupang, Citadel, Meta, Walmart Labs, LinkedIn, Uber, Bloomberg, TikTok

Hard
Software Engineer

Implement an LFU Cache with LRU Tie-Breaking

Implement a least-frequently-used cache. get(key) returns its value or -1 when absent. put(key,value) inserts or updates an entry. New entries start w...

Coding & AlgorithmsData Structure DesignLinked Lists
1
0
24 people solved
Goldman Sachs logo
Goldman Sachs
Easy
Software Engineer Locked

Design a Pastebin Service: Requirements, Entities, APIs and End-to-End Architecture

Design a pastebin-style service that stores text and serves it through short links, working from functional and non-functional requirements through co...

System DesignSystem Design FundamentalsAPI Design
10
0
77 people solved
Sep 13, 2026
Basis Ai logo
Basis Ai
Easy
Software Engineer

Why Infrastructure, Handling Pressure, and Going to the Lowest Level of Detail

In a hiring manager conversation focused on behavioral questions, the interviewer asks about your interests, why you are drawn to a particular technic...

Behavioral & LeadershipMotivation & Fit
0
0
2 people solved
Nov 4, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Multi-Agent Collision Simulator (Unicycle Kinematics)

This question tests practical coding ability in robotics simulation, specifically implementing unicycle kinematics and discrete-time modeling via forw...

Coding & Algorithms
6
0
123 people solved
Jun 21, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design GPU credit allocator

Design a GPU Credit Allocation System Design a GPU credit allocation system for a multi-tenant compute platform (for example, OpenAI's GPU infrastruct...

System DesignGPU InfrastructurePayments & Ledgers
434
0
3302 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Machine Learning Engineer

Pizza Price Function, Then a Shop Pricing Screen and the Pricing Microservice Question

Write a function that prices a pizza, then discuss how you would turn it into something a real pizza shop could use. The function is short; most of th...

Software Engineering FundamentalsMicroservices & Service ArchitectureCode Quality & Maintainability
2
0
14 people solved
Jul 31, 2026
Modal logo
Modal
Medium
Software Engineer Locked

Prove an Incremental Shuffle Is Uniform

Prove that the forward Fisher-Yates shuffle produces every permutation of distinct elements with probability 1/n factorial. Use an induction invariant...

Software Engineering Fundamentals
6
0
133 people solved
Jul 12, 2026
PayPal logo
PayPal
Medium
Product Manager

Behavioral: Candidly Naming Your Biggest Dislike in Your Current Product Role

In a behavioral interview for a product manager role at PayPal, the interviewer asks which part of your current job you like least. Answer with a real...

Behavioral & LeadershipMotivation & Fit
1
0
14 people solved
Sep 30, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Implement a Referral Network

This question evaluates skills in modeling and manipulating directed acyclic graphs, implementing graph-based ranking metrics (reachability and flow c...

Coding & AlgorithmsGraphsData Structure Design
27
0
293 people solved
May 2, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Digital Game Distribution Platform

Design a digital game distribution platform spanning transactional purchases, refunds and entitlements, immutable builds, chunked CDN downloads, offli...

System Design
24
0
187 people solved
Aug 16, 2026
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