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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
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Design an OOD detection system

This question evaluates a candidate's competency in ML system design, specifically out-of-distribution detection, production monitoring, interpretabil...

ML System DesignModel Monitoring & DriftModel Evaluation
42
0
340 people solved
Dec 14, 2025
Deloitte logo
Deloitte
Medium
Product Manager

Handling an Underperforming Launch When Engineering Has No Spare Capacity

A feature you shipped recently is falling short of what customers expected. Your engineering team is fully booked and the roadmap has no room. What wo...

Product / Decision MakingPrioritization & TradeoffsCommunication & Stakeholders
1
0
13 people solved
Mar 16, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Design a Food Delivery Cart

This question evaluates competency in designing stateful, user-facing subsystems including data modeling, API design, session persistence, caching, co...

System DesignSystem Design Fundamentals
203
1
1529 people solved
Apr 21, 2026
Mercor logo
Mercor
Medium
Software Engineer Locked

Reason About Coffee-Quality Comparison Probabilities

Analyze coffee-quality comparison probabilities by defining the event, independence, and ties, then use labeled orderings to derive conditional result...

Statistics & MathProbabilityPuzzles & Brainteasers
15
0
105 people solved
Sep 3, 2026
Roku logo
Roku
Medium
Backend Engineer Locked

Design a high-throughput ad exchange

This question evaluates a candidate's ability to design scalable, high-throughput, low-latency distributed backend systems for real-time ad exchanges,...

System DesignAds SystemsSystem Design Fundamentals
7
0
133 people solved
Feb 25, 2026
Meta logo
MetaGoogleAmazonMicrosoft

Also asked at Amazon, Microsoft

Medium
Software Engineer

Count Contiguous Subarrays With a Constant Difference

Count Contiguous Subarrays With a Constant Difference Given an integer array nums, count its contiguous subarrays of length at least three whose adjac...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
0
0
7 people solved
Uber logo
Uber
Hard
Software Engineer

Design Uber Eats-style search function

Design the search function for a large-scale food delivery platform similar to Uber Eats. A user opens the app and types a query into a single search ...

System DesignSearch & Feed SystemsGeo & Delivery Systems
53
0
630 people solved
Nov 11, 2025
Google logo
Google
Medium
Data Scientist

Calculate Top Countries' Gmail Usage and MoM Change

emails +----+---------+-----------+-----------+------------+ | id | user_id | country | provider | send_date | +----+---------+-----------+-------...

Data Manipulation (SQL/Python)
4
0
59 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Design an online auction system

Question Design a scalable, highly available online auction system (eBay-style) where sellers list items and buyers bid on them in real time. Function...

System Design
24
0
179 people solved
Feb 25, 2026
Perplexity logo
Perplexity
Medium
Product Manager

Staying close to users and turning their input into product decisions

How do you engage with your product's users in your day-to-day work as a PM? Describe your approach and give an example of how it changed a product de...

Behavioral & LeadershipUser Research & Discovery
1
0
12 people solved
May 10, 2026
Amplitude logo
Amplitude
Medium
Software Engineer

Implement lossless dictionary encoding and decoding

Dictionary encoding is a lossless compression technique for a list of tokens. You are given an input string consisting of words separated by commas, e...

Coding & AlgorithmsParsing & InterpretersArrays & Strings
6
0
105 people solved
Feb 25, 2026
Apple logo
Apple
Medium
Accessories Software QA EngineerNew Grad

Improve QA Benchmarks, Regression Tests, and HPC Resource Use

A software QA project includes both performance benchmarks and regression tests. Its benchmark jobs consume substantial resources on a shared high-per...

Software Engineering FundamentalsTesting & QualityConcurrency
2
0
28 people solved
Mar 16, 2026
Google logo
GoogleAmazonMetaMeesho

Also asked at Meta, Meesho

Medium
Software Engineer

Earliest Time to Finish Enough Independent Trips

Problem Bus i takes time[i] units of time to complete one trip. All buses start at time zero, operate independently and immediately begin another trip...

Coding & AlgorithmsBinary Search
0
0
9 people solved
Meta logo
Meta
Medium
Data Scientist

Write SQL with HAVING and efficient joins

You are given two tables. Schema - interactions(product_id INT, buyer_id INT, seller_id INT, interaction_date DATE, interaction_type VARCHAR, interact...

Data Manipulation (SQL/Python)
3
0
26 people solved
Oct 13, 2025
Nuro logo
Nuro
Easy
Software Engineer Locked

Parse logs and count error codes

This question evaluates parsing and sanitizing structured text, extracting specific fields, and performing frequency aggregation of identifiers such a...

Coding & AlgorithmsParsing & Interpreters
7
0
122 people solved
Feb 12, 2026
Google logo
Google
Easy
Software Engineer Locked

Busiest Rental Car

This question evaluates a candidate's ability to simulate a resource-allocation process using interval scheduling and greedy assignment rules. It test...

Coding & Algorithms
15
1
93 people solved
Jun 22, 2026
Apple logo
Apple
Medium
Product Manager

Apple Hardware-as-a-Subscription Strategy: Launch Recommendation

You are a product manager at Apple. Should Apple offer a subscription that lets customers pay a recurring fee for their devices and move to newer mode...

Product Design & StrategyProduct StrategyBusiness Case Analysis
1
0
10 people solved
Sep 21, 2026
Capital One logo
Capital One
Easy
Data Scientist Locked

How would you decide to cancel a TV show?

This question evaluates a data scientist's competencies in business analytics and strategic decision-making, including financial and valuation reasoni...

Analytics & ExperimentationBusiness Case AnalysisProduct Strategy
9
0
140 people solved
Feb 12, 2026
Scribd logo
Scribd
Medium
Software Engineer Locked

Behavioral: Reason for Leaving, Proudest Project, Handling Ambiguity, and a Trade-off

A behavioral interview question set for a software engineer covering why you are leaving your current company, the project you are most proud of, the ...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
0
0
12 people solved
Sep 4, 2026
Meta logo
Meta
Hard
Machine Learning EngineerSenior+ AI Locked

Optimize a Fifteen-Sum Card Strategy

This question evaluates algorithmic problem-solving, debugging, simulation-based testing, and strategy optimization using techniques such as search, m...

Coding & Algorithms
10
0
98 people solved
Mar 1, 2026
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