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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
Pinterest logo
Pinterest
Medium
Data ScientistSenior+ Locked

Size an Opportunity and Present It with Clear Visuals

Structure a data science case that sizes a business opportunity from partial information and presents it to senior decision-makers. Build top-down and...

Analytics & Experimentation
16
0
106 people solved
Jun 14, 2026
Snapchat logo
Snapchat
Medium
Data Scientist Locked

Analyze OLS After Duplicating Every Observation

Derive how exact row duplication affects OLS coefficients and standard errors. The coefficients stay fixed while naive uncertainty shrinks, exposing a...

Statistics & Math
3
0
28 people solved
Aug 13, 2026
Lyft logo
Lyft
Medium
Data Scientist

Design experiments for marketplace balance

You propose a new supplier prioritization (ranking) policy intended to increase order completion in a two-sided marketplace with known interference be...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
32
0
220 people solved
Oct 13, 2025
Google logo
GoogleAmazon
Easy
Software Engineer

Count Distinct Concatenated Morse Encodings

Problem Encode each lowercase word by concatenating the Morse strings of its letters without separators. Return the number of different encoded string...

Coding & AlgorithmsArrays & Strings
1
0
14 people solved
Guidewire logo
Guidewire
Medium
Software Engineer

Assign Distinct Tower Heights Under Per-Tower Limits

Assign Distinct Tower Heights Under Per-Tower Limits Problem You are given an integer array maximumHeight. Tower i must receive a positive integer hei...

Coding & AlgorithmsGreedySorting
1
0
10 people solved
Meta logo
Meta
Medium
Product Manager

Creating a Gen Z-Focused Product Experience Inside Facebook

You are interviewing for a product manager role at Meta. The interviewer wants a new product or feature on Facebook that is built for Gen Z, the gener...

Product Design & StrategyProduct SenseMetrics & KPIs
1
0
12 people solved
Sep 24, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Resume deep dive: CI/CD pipelines, test automation and the practices behind them

One round began with a deep dive into your resume that focused on automation and CI/CD. The interviewer tested how well you understand CI/CD concepts ...

Software Engineering FundamentalsCI/CD & DeploymentTesting & Quality
1
0
16 people solved
Apr 3, 2026
ByteDance logo
ByteDance
Medium
Data Engineer Locked

Choose Components for a Data Warehouse

Compare Hive, Spark, Hadoop components, and SQL Server by storage, compute, governance, latency, scale, and operational trade-offs.

Software Engineering Fundamentals
2
0
47 people solved
Aug 28, 2026
Salesforce logo
Salesforce
Medium
Product Manager

Setting a Launch Price for a Retailer's New Product: What Drives the Number

You are a product manager at a large retail company, and you own the price of a product the retailer is about to launch. Walk through the factors you ...

Product / Decision MakingGrowth & MonetizationBusiness Case Analysis
1
0
9 people solved
Jul 11, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design an in-memory banking service

Design an in-memory banking service supporting timestamped operations and edge-case semantics. Implement: ( 1) create_account(id, t): Create a new acc...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
154
3
1358 people solved
Sep 6, 2025
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Design a CI/CD release notification service

This question evaluates object-oriented design skills, modeling of releases and changes, notification and event-driven system reasoning, and handling ...

Software Engineering Fundamentals
15
0
114 people solved
Jan 22, 2026
Instacart logo
Instacart
Medium
Machine Learning Engineer

Design an Advertising Ranking Pipeline beyond Calibration

Design the end-to-end machine-learning pipeline for selecting and ranking ads in a grocery product. Explain the components, the models and losses you ...

Machine LearningCTR Prediction & Ads MLML System Design
0
0
8 people solved
Jul 15, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Easy
Data Scientist Locked

Find the Success Probability of Bold Betting

Calculate the chance of reaching five tokens before ruin under a bold, state-dependent betting rule. The solution enumerates the transitions, sets abs...

Statistics & Math
4
0
37 people solved
Aug 16, 2026
DoorDash logo
DoorDash
Easy
Data Scientist

Switchback vs. Geo Randomization for Experiments in a Delivery Marketplace

A food-delivery marketplace connects customers, merchants and couriers. In an experiment-design interview you are asked, in detail, how you would run ...

Analytics & ExperimentationExperiment Design (A/B Testing)
0
0
5 people solved
Aug 8, 2026
Amazon logo
Amazon
Medium
Frontend EngineerNew Grad Locked

Learn and Apply a Front-End Technology Across Devices

Describe learning and applying a front-end technology through primary documentation, a focused prototype, codebase evidence, maintainable integration,...

Behavioral & Leadership
3
0
29 people solved
Aug 22, 2026
Google logo
GoogleBloomberg
Hard
Software Engineer

Best Upward Board Score and Number of Optimal Routes

Problem Start at S in the bottom-right corner of the square board and reach E in the top-left. Each move goes up,left or diagonally up-left to a non-X...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
0
0
9 people solved
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Show Ownership and Help a Struggling Peer

Show ownership beyond your assigned area and explain how you helped a struggling peer through specific actions, clear coordination, and lasting unders...

Behavioral & LeadershipOwnership & ExecutionMentoring & Team Growth
2
0
32 people solved
Aug 30, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Turn-Based Monster Battles

This question evaluates the ability to implement a turn-based battle simulation with correct state management, turn semantics, knockout handling, dama...

Coding & AlgorithmsSimulation & State MachinesData Structure Design
29
0
239 people solved
Mar 9, 2026
Meta logo
Meta
Medium
Software Engineer

Implement an in-memory key-field-value DB with TTL

In-Memory DB with TTL + Scan + Backup/Restore Implement an in-memory database storing records by (key, field) -> value with optional TTL. Data model /...

Coding & AlgorithmsKey-Value StoresData Structure Design
16
0
208 people solved
Feb 11, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Distributed Crossword Solver

This question evaluates competency in distributed systems design, algorithmic search and constraint satisfaction (e.g., DFS with constraint propagatio...

System DesignJob Scheduling & WorkflowsBacktracking & Recursion
62
0
1006 people solved
May 12, 2026
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