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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
Apple logo
Apple
Medium
Product Manager

Go or No-Go on a Social Layer for iMessage, and Scoping the First Bet

You are a product manager working on Messages at Apple. iMessage is Apple's messaging service, built into the Messages app on iPhone, iPad and Mac. Re...

Product Design & StrategyProduct StrategyMetrics & KPIs
1
0
11 people solved
Sep 16, 2026
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer

Explain Python and React performance fundamentals

In a phone screen for a full-stack software engineering role, you may be asked a group of fundamentals questions such as: - Explain what a Python cont...

Software Engineering Fundamentals
18
0
157 people solved
Apr 6, 2026
Upstart logo
Upstart
Medium
Software Engineer

Solve remembered OA coding tasks

The online assessment reportedly had five coding questions, but only the following three were described clearly enough to reconstruct: 1. Find the top...

Coding & AlgorithmsArrays & Strings
15
0
245 people solved
Jan 20, 2026
Notion logo
Notion
Easy
Software Engineer

Implement Table Aggregation

You are given a table represented as a list of rows. Each row contains: - key: a string identifying a group - value: an integer Write a function that ...

Coding & AlgorithmsArrays & Strings
58
1
480 people solved
Feb 1, 2026
Anthropic logo
Anthropic
Medium
Machine Learning Engineer Locked

Implement an LRU cache

This question evaluates competency in designing efficient key-value caching mechanisms, enforcing capacity constraints and eviction policies while mai...

Coding & AlgorithmsData Structure Design
26
0
407 people solved
Feb 27, 2026
Microsoft logo
Microsoft
Medium
Machine Learning Engineer

Measure LLM Quality and Detect Hallucinations, Then Implement an Evaluation Component

This is a hands-on AI exercise in a machine learning loop for LLM products. The discussion goes deep on how to measure LLM performance and how to dete...

Machine LearningLLM EvaluationML Coding
2
0
22 people solved
Apr 9, 2026
Snowflake logo
SnowflakePerplexityGoogle

Also asked at Google, Amazon, Uber, DoorDash, Coinbase, Microsoft, Oracle, TikTok, Coupang, Citadel, Observe.AI, Netskope

Medium
Software Engineer

Tree-Backed In-Memory File System with ls, mkdir, Append and Read

Implement a file system that keeps directories and files in memory and supports four operations: listing a path, creating a directory, appending conte...

Software Engineering FundamentalsData Structure DesignTrees
2
0
27 people solved
Rippling logo
Rippling
Easy
Software EngineerSenior+

Walk Through Your Current Role, a Recent Work Challenge, and How You Use AI Tools

You are on a 30-minute introductory call with a recruiter for a senior software engineer role. The recruiter asks three questions about your own work:...

Behavioral & LeadershipMotivation & FitAI-Assisted Development
3
0
28 people solved
Jul 4, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Count Subarrays with a Target Sum

Count contiguous subarrays whose sum equals a target in O(n) time, even when values are negative or zero. Use prefix-sum frequencies to count valid st...

Coding & Algorithms
6
0
114 people solved
Aug 8, 2026
Adobe logo
Adobe
Medium
Product Manager

Adobe Product Sense: First Build to Lower the Beginner Barrier in Creative Apps

You are interviewing for a product manager role at Adobe. Adobe wants its creative tools to be more accessible to people who are just starting out. Wh...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
11 people solved
Sep 19, 2026
Google logo
Google
Medium
Product Manager

Lay Out a Five-Year Plan to Make Waymo's Robotaxi Business Profitable

Imagine you have just been named CEO of Waymo, the Alphabet company that runs a driverless ride-hailing service. Lay out the strategy you would follow...

Product Design & StrategyProduct StrategyBusiness Case Analysis
2
0
20 people solved
Sep 28, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Implement a Snapshot Set Iterator

Implement a data structure SnapshotSet<T> with the following interface: `java interface SnapshotSet<T> { void add(T e); void remove(T e); ...

Coding & AlgorithmsData Structure Design
48
0
391 people solved
Mar 13, 2026
Reddit logo
Reddit
Medium
Backend Engineer

Debug and Improve a Load Balancer

Debug and Improve a Load Balancer Clarifying Questions to Ask - Is the load balancer a single process exercise or a distributed production service? - ...

Software Engineering FundamentalsDebuggingFault Tolerance & Failover
13
0
140 people solved
May 6, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern

Count Numbers with an Even Number of Digits

Problem Given an array of positive integers, count how many elements have an even number of decimal digits. Function Contract Implement count_even_dig...

Coding & Algorithms
5
0
55 people solved
Apr 20, 2026
Instacart logo
Instacart
Medium
Software EngineerSenior+ Locked

Reserve Cart Inventory Without Overselling

Design cart-time inventory reservations that prevent overselling, coordinate checkout and expiration, avoid races, and handle tenfold transaction grow...

System DesignTransactions & IsolationConcurrency
7
0
47 people solved
Sep 7, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer

Defend a Research Direction and Experiment Design

You are interviewing for a research-focused Machine Learning Engineer role at a frontier AI lab. The onsite includes a collaboration / research-discus...

Machine LearningModel EvaluationProject Deep Dive
45
0
311 people solved
Apr 13, 2026
Amazon logo
AmazonAndurilBloomberg

Also asked at Bloomberg, Google, Microsoft, Adobe, Deshaw, Meta, IBM, Zeta Global, TikTok, PhonePe

Medium
Software Engineer

Find One Heater Radius That Reaches Every House

Find One Heater Radius That Reaches Every House The positions of houses and heaters lie on a horizontal line. Every heater uses the same nonnegative w...

Coding & AlgorithmsBinary SearchSorting
0
0
8 people solved
Purestorage logo
PurestorageGoogleMetaTikTok

Also asked at Meta, TikTok

Medium
Software Engineer

Determine whether points form squares

Determine whether points form squares You are given points in the plane with integer coordinates. A square has four equal positive side lengths and fo...

Coding & AlgorithmsMath & Number Theory
20
0
233 people solved
Giga logo
Giga
Medium
Software Engineer

Design an Agentic Ticket Support System

Design an AI-powered ticket support system. The system must integrate with two existing external systems: 1. Ticket system: Displays all support ticke...

ML System Design
17
0
124 people solved
Apr 9, 2026
IBM logo
IBM
Easy
Software Engineer Locked

Sum the XOR of Every Cross-Array Pair

Compute the sum of XOR values across every pair drawn from two integer arrays without enumerating the full Cartesian product. The problem tests bit-fr...

Coding & Algorithms
6
0
61 people solved
Aug 18, 2026
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