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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
NVIDIA logo
NVIDIA
Medium
Software Engineer

Design an IR for test workflows

Design an IR for test workflows Design an intermediate representation (IR) for a graphics testing workflow as a DAG. Define node/edge types, metadata,...

Software Engineering Fundamentals
7
0
83 people solved
Aug 9, 2025
Nordstrom logo
Nordstrom
Medium
Software Engineer

Demonstrate motivation, ownership, and customer focus

Demonstrate motivation, ownership, and customer focus Behavioral and Leadership Interview (Software Engineer, Onsite) Instructions - Use STAR (Situati...

Behavioral & Leadership
5
0
65 people solved
Jul 17, 2025
TikTok logo
TikTok
Medium
Data Scientist

Analyze shopping funnel with joins and windows

Write SQL (PostgreSQL) to analyze a 4-step shopping funnel: view_product → add_to_cart → checkout_start → purchase. Use the schema and sample data bel...

Data Manipulation (SQL/Python)SQLUser Behavior & Funnels
19
0
159 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Purpose, Goals and Success Metrics for the Notifications Bell in Meta's Mobile App

Meta's mobile app has a bell icon that opens the user's notifications. Explain why Meta built it, then set goals for it and describe how you would mea...

Analytics & ExperimentationMetrics & KPIsProduct Sense
0
0
4 people solved
Mar 6, 2026
Meta logo
Meta
Hard
Software Engineer

Remove minimum invalid mixed brackets

Given a string s containing letters and bracket characters from the set (), [], {}, remove the minimum number of bracket characters so that the result...

Coding & AlgorithmsDynamic ProgrammingStacks & Queues
10
0
92 people solved
Feb 17, 2026
Instacart logo
Instacart
Medium
Product Manager

Measuring Instacart Shopper Supply Against Order Demand by Zone and Hour

Instacart fills grocery orders through shoppers: independent contractors who choose when to work, pick the customer's items in the store and deliver t...

Analytics & ExperimentationMetrics & KPIsTime Series & Forecasting
1
0
9 people solved
Oct 9, 2024
Amazon logo
Amazon
Medium
Product Manager

Influencing leaders above your level to back your plan: PM behavioral story

This is a behavioral question for a product manager role. Describe a specific time when you needed people more senior than you, such as directors, exe...

Behavioral & LeadershipLeadership & InfluenceCommunication & Stakeholders
0
0
9 people solved
Jan 22, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze Recent Calling Behavior in France Using SQL

CALLS +---------+---------+---------------------+-------------------+----------+ | call_id | user_id | call_start_time | participant_cnt | is_vi...

Data Manipulation (SQL/Python)
71
0
209 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Implement power, reduce string, parse tree, debug maze

This multi-part question evaluates numerical algorithms (fast exponentiation), string-processing and reduction logic, recursive parsing and tree const...

Coding & Algorithms
5
0
72 people solved
Jan 1, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Implement iterators and write tests in Java

Implement iterators and write tests in Java In Java, write everything from scratch (no IDE scaffolding): 1) Define a generic Iterator<T> interface wit...

Coding & AlgorithmsProgramming LanguagesLow-Level Design (OOP)
13
0
153 people solved
Jul 31, 2025
Google logo
Google
Hard
Data Scientist Locked

Design a Causal Upgrade Experiment

This question evaluates competency in causal inference and experimental design, focusing on handling selection bias, defining intent-to-treat and trea...

Analytics & ExperimentationCausal InferenceExperiment Design (A/B Testing)
20
0
145 people solved
Dec 3, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Behavioral pair: how you enabled another person's success, and when others enabled yours

You are interviewing for a product manager role at Microsoft. The interviewer wants two short stories about help flowing in each direction: one where ...

Behavioral & LeadershipMentoring & Team Growth
0
0
6 people solved
Jun 27, 2025
Walmart Labs logo
Walmart Labs
Medium
Product Manager

Estimate How Many Golfers Are Mid-Round Worldwide at One Moment

You are asked to estimate how many people around the world are playing golf at this very moment. Nothing can be looked up: build the figure from assum...

Product / Decision MakingEstimation & Market Sizing
0
0
7 people solved
Jan 30, 2025
Meta logo
Meta
Medium
Data Scientist

Write SQL for hashtag analytics and joins

Assume today = 2025-09-01. Schema and small sample data are below. Use ANSI SQL; explain any dialect-specific functions you choose. Where asked, expla...

Data Manipulation (SQL/Python)
2
0
17 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design a basic task management system

Design a Simple Task Management Service Requirements Design a simple task management system that supports: 1. Add a new task with a unique ID and desc...

System Design
12
0
83 people solved
Sep 6, 2025
Walmart Labs logo
Walmart Labs
Medium
Product Manager

Design an Online Shopping App From Scratch for Completely Blind Users

Design an online shopping app for people who are completely blind. Treat it as a brand-new product built from scratch rather than an improvement to an...

Product Design & StrategyAccessibility & Inclusive DesignProduct Sense
2
0
15 people solved
Aug 18, 2024
Uber logo
Uber
Medium
Data Scientist

Formulate OR model to reduce driver backtracking

Define and reduce driver ‘backtracking’ in a marketplace. First, define a quantitative backtracking metric B per driver-hour from GPS and assignment l...

Statistics & MathOperations & CapacityMetrics & KPIs
7
0
107 people solved
Oct 13, 2025
Instacart logo
Instacart
Medium
Software Engineer

Compute average customer waiting time

Compute average customer waiting time You are given n customer orders; each order i = [a_i, p_i] where a_i is the arrival time and p_i is the preparat...

Coding & AlgorithmsSimulation & State MachinesHeaps & Priority Queues
8
0
115 people solved
Jul 15, 2025
Meta logo
Meta
Medium
Data Scientist

Identify Top 10 Users by Average Call Duration

video_calls | call_id | user_id | start_time | end_time | |---------|---------|----------------------|----------------------| | ...

Data Manipulation (SQL/Python)
8
0
66 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Data Scientist

Implement BFS to Find Shortest Path in Graph

Scenario Social network needs to compute the shortest friend-distance between two users in an undirected graph containing millions of nodes. Question ...

Coding & Algorithms
16
0
58 people solved
Aug 4, 2025
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