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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
Uber logo
Uber
Medium
Software Engineer Locked

Count Valid Infection Orders

This question evaluates combinatorial enumeration and algorithmic reasoning by counting valid sequences of state changes in a linear infection process...

Coding & Algorithms
4
0
39 people solved
Apr 21, 2026
Meta logo
Meta
Medium
Data Scientist

Identify Unique Callers and French Customer Call Percentage

video_calls +---------+-----------+--------------+---------------------+---------------+ | call_id | caller_id | recipient_id | start_ts | ...

Data Manipulation (SQL/Python)
88
0
299 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Software Engineer

Maximize optional tasks under daily limit

You are given an integer limit and two integer arrays required and optional of length n. For each day i, you must schedule required[i]. If time remain...

Coding & Algorithms
4
0
58 people solved
Sep 6, 2025
Google logo
Google
Medium
Software Engineer Locked

Simulate room assignments for scheduled meetings

This question evaluates scheduling and event-simulation skills, including time-ordered processing, resource allocation with tie-breaking, and efficien...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
20
1
193 people solved
Jan 6, 2026
Meta logo
Meta
Medium
Machine Learning Engineer

Find target using robot movement API

You control a robot in an unknown 2D grid. The grid layout and boundaries are unknown, and you cannot access the map directly. Some cells are blocked ...

Coding & AlgorithmsGrids & MatricesBacktracking & Recursion
17
0
129 people solved
Oct 30, 2025
Boston Consulting Group logo
Boston Consulting Group
Medium
Data Scientist

Merge and Clean Customer Order Data for Analysis

customers +----+---------+---------+ | id | name | country | +----+---------+---------+ | 1 | Alice | US | | 2 | Bob | UK | | 3 ...

Data Manipulation (SQL/Python)
3
0
45 people solved
Aug 4, 2025
Uber logo
Uber
Easy
Machine Learning EngineerIntern

Analyze sales with groupby

You are given three pandas DataFrames representing a food delivery marketplace: - orders(order_id, product_id, quantity, unit_price, status) - product...

Coding & Algorithms
9
0
88 people solved
Mar 9, 2026
Netflix logo
Netflix
Medium
Data Scientist

Highlight Netflix Culture Principle in Past Work Example

Behavioral Interview: Netflix Culture Fit and Project Walkthrough Problem Statement You are interviewing for a Data Scientist role at Netflix. This is...

Behavioral & LeadershipProject Deep DiveMetrics & KPIs
12
0
131 people solved
Aug 4, 2025
Meta logo
Meta
Hard
Software Engineer

Solve common array/string/linked-list tasks

You may be asked one or more of the following independent coding tasks. For each task, implement an efficient algorithm and clearly state time/space c...

Coding & Algorithms
8
0
71 people solved
Oct 21, 2025
Amazon logo
Amazon
Medium
Product Manager

Designing an asynchronous messaging service: API, delivery guarantees, failures

You are a product manager at Amazon. Design a web service that lets parties communicate asynchronously: a sender hands a message to the service now, a...

System DesignPlatform & API ProductsMessaging & Event-Driven
0
0
5 people solved
Oct 15, 2025
Imc logo
Imc
Easy
Data Scientist Locked

Find valid range of q for outcome probabilities

This question evaluates understanding of probability distributions and the formulation of arbitrage conditions using linear algebra, testing competenc...

Software Engineering Fundamentals
6
0
56 people solved
Jan 6, 2026
Weiss Asset Management logo
Weiss Asset Management
Medium
Data Scientist Locked

Evaluate and Monitor a Paid Electricity Price Forecast

Evaluate whether a paid next-week electricity price forecast adds economic value over transparent baselines, then diagnose a five-day accuracy decline...

Analytics & ExperimentationTime Series & ForecastingBusiness Case Analysis
2
0
19 people solved
Aug 12, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Uber Wearable Product: Pick the Users and Scope a Glanceable Watch Experience

You are a product manager at Uber and have been asked to design an app for smartwatches. Decide who the app is for, which problems it should solve on ...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
7 people solved
Feb 8, 2026
Twitch logo
Twitch
Hard
Data Scientist

Design an A/B test for pre-roll ads

A/B Test: Reduce Mobile Live‑Stream Pre‑Roll Ad Frequency by 20% Context: You are designing an experiment on mobile live streams to evaluate reducing ...

Analytics & Experimentation
10
0
74 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Explain handling pressure to bend rules

Describe a time you were explicitly asked to bend or break a rule for convenience (e.g., process, compliance, or data governance). How did you assess ...

Behavioral & Leadership
6
0
78 people solved
Oct 13, 2025
Zoox logo
Zoox
Hard
Backend Engineer Locked

Design a Ride-Hailing Platform

This question evaluates competency in designing large-scale, real-time distributed systems, including distributed architecture, geo-spatial indexing a...

System DesignGeo & Delivery SystemsSystem Design Fundamentals
15
0
109 people solved
Dec 13, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Identify Key Metrics to Address Delivery Delays

Identify Key Metrics to Address Delivery Delays Scenario DoorDash, a food-delivery marketplace, is seeing growing customer complaints about orders arr...

Analytics & ExperimentationMetric DiagnosticsExperiment Design (A/B Testing)
13
0
183 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Data Scientist

Write SQL to analyze Group Calls adoption

Write SQL (assume PostgreSQL) to analyze Group Calls adoption and cannibalization. Use this schema and sample data. Schema: - users(user_id INT PRIMAR...

Data Manipulation (SQL/Python)
2
0
22 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Choose and compute correct t-test

A/B Test: Watch Time per Impression (seconds) You ran an experiment with two independent groups and want to assess whether the new experience increase...

Statistics & Math
3
0
57 people solved
Oct 13, 2025
Upstart logo
Upstart
Medium
Product Manager

Build an adaptive pricing system for loans on Upstart's lending marketplace

You are a product manager at Upstart, the online lending marketplace that uses machine-learning models to decide which consumers to approve for loans,...

Product Design & StrategyGrowth & MonetizationFairness & Bias
2
0
16 people solved
Apr 20, 2025
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