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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
Meta logo
Meta
Medium
Product Manager

Metrics Framework for Instagram's Account Verification Badge

You are the product manager who owns verification on Instagram: the badge shown next to an account's name to confirm that the account really belongs t...

Analytics & ExperimentationMetrics & KPIsCausal Inference
0
0
8 people solved
Mar 3, 2026
Dropbox logo
Dropbox
Medium
Product Manager

Validity Threats in A/B Tests: Biases That Break Experiment Conclusions

You are interviewing for a product manager role at Dropbox. The interviewer asks you to name the common biases that can make the result of a product e...

Analytics & ExperimentationExperiment Analysis & ReadoutExperiment Design (A/B Testing)
1
0
11 people solved
Oct 26, 2025
Google logo
Google
Medium
Product Manager

Add one to a non-negative integer stored as an array of decimal digits

You are given an array in which every element is a single decimal digit between 0 and 9, and the elements together represent one non-negative whole nu...

Software Engineering FundamentalsArrays & StringsMath & Number Theory
1
0
13 people solved
May 13, 2025
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Solve Shipping and Bundle-Cost Problems

This question evaluates algorithmic reasoning for scheduling and capacity planning (minimum daily shipping capacity) and combinatorial optimization wi...

Coding & Algorithms
4
0
76 people solved
Nov 17, 2025
Xiaopeng logo
Xiaopeng
Medium
Software Engineer Locked

Maintain the Median of a Data Stream

Process a stream of integers and return the median after every insertion. Work through the function contract, boundary cases, correctness argument, an...

Coding & Algorithms
3
0
25 people solved
Jul 22, 2026
Roblox logo
Roblox
Hard
Data Scientist

Design ad revenue A/B with guardrails

Mobile App Ads Marketplace: Experiment Plan to Lift Revenue by 10% in 60 Days Context You run a mobile app ads marketplace. Target is to increase ad r...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
8
0
113 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Frequency Stack with Recency Tie-Breaking

Implement a frequency stack whose pop operation returns the most frequent value and breaks frequency ties by recency.

Coding & Algorithms
15
3
116 people solved
Aug 28, 2026
Meta logo
Meta
Medium
Product Analyst Locked

Write Call Analytics SQL Queries

This question evaluates SQL data manipulation and analytical competencies, including aggregation, joins between user and event tables, time-window fil...

Data Manipulation (SQL/Python)
4
0
34 people solved
Jan 28, 2026
TikTok logo
TikTok
Medium
Machine Learning Engineer

Find and count target-sum subarrays

Find and count target-sum subarrays Given an integer array nums and an integer target, implement: ( 1) a function that returns true if any non-empty c...

Coding & Algorithms
9
0
76 people solved
Jul 31, 2025
Uber logo
Uber
Medium
Software Engineer

Describe your strongest project

What is the most impressive project you have worked on? In your answer, cover: - The problem/business goal and why it mattered - Your specific role an...

Behavioral & LeadershipProject Deep DiveFailure & Learning
11
0
111 people solved
Feb 20, 2026
DoorDash logo
DoorDash
Medium
Software EngineerSenior+

Demonstrate leadership and team development

Demonstrate leadership and team development Behavioral & Leadership: End-to-End Project Leadership (L5-level) Context: This is a behavioral prompt oft...

Behavioral & Leadership
7
0
66 people solved
Jul 17, 2025
Otter.Ai logo
Otter.Ai
Medium
Software Engineer Locked

Evaluate Arithmetic Expressions

This question evaluates understanding and implementation of expression parsing, operator precedence, tokenization of numeric and operator tokens, and ...

Coding & Algorithms
5
0
42 people solved
May 29, 2026
Meta logo
Meta
Medium
Software Engineer

Implement sparse vector dot product

Question Design a SparseVector class for vectors of integers in which most entries are zero, and support an efficient dot product between two such vec...

Coding & Algorithms
6
0
87 people solved
Aug 14, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Design the Store Visit for a Tommy Hilfiger Shopper Who First Found a Garment Online

You are a product manager at Tommy Hilfiger. Alongside its physical stores, the brand runs an online store. A customer browsing it has found a piece o...

Product Design & StrategyProduct Design & Improvement
0
0
6 people solved
Oct 16, 2025
Verkada logo
Verkada
Medium
Frontend EngineerNew Grad Locked

Build a React dashboard with filters

This question evaluates frontend engineering skills in React, including component decomposition, controlled inputs and state management, semantic HTML...

Software Engineering Fundamentals
4
0
80 people solved
Jan 10, 2026
Xometry logo
Xometry
Medium
Machine Learning EngineerSenior+

Optimize Model Serving Under 200ms

A data science team gives you a trained model and asks you to deploy it as an online inference service. The requirement is that a single prediction mu...

ML System Design
2
0
43 people solved
Mar 7, 2026
Capital One logo
Capital One
Medium
Data Scientist

Model network-service unit economics and breakeven

A network service charges $40/month with the first 3 months free. Costs: variable service cost $25 per active month; one-time install cost $35 at acti...

Statistics & Math
5
0
98 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Applied Scientist Locked

Determine if all courses can be completed

This question evaluates graph-theoretic dependency modeling and cycle-detection competency, measuring the ability to represent course prerequisites as...

Coding & Algorithms
6
0
45 people solved
May 30, 2026
OpenAI logo
OpenAI
Medium
Data Scientist

Determine Metrics to Measure Free-Trial Impact on Subscriptions

Determine Metrics to Measure Free-Trial Impact on Subscriptions A/B Test: Free Trial Offer Impact on Subscription Behavior Scenario You are analyzing ...

Analytics & ExperimentationExperiment Design (A/B Testing)
65
0
197 people solved
Aug 4, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Design a meeting scheduler and shopping cart

This question evaluates system design skills across distributed systems, API design, data modeling, indexing, caching, concurrency control, consistenc...

System DesignSystem Design FundamentalsStorage & Sharding
39
0
555 people solved
Mar 1, 2026
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