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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
Product Manager

Diagnosing and Fixing Inventory Accuracy Problems in Uber's Grocery Delivery

Uber lets customers order groceries from partner stores through its app and have them delivered. You are the product manager, and you are told the gro...

Product Design & StrategyOperations & CapacityMetric Diagnostics
0
0
11 people solved
Jul 8, 2025
Nimble logo
Nimble
Hard
Software Engineer Locked

Implement a TTL LRU Cache

This question evaluates understanding of in-memory cache design, including per-entry TTL expiration, LRU eviction, and the data structure and complexi...

Coding & Algorithms
2
0
32 people solved
May 21, 2026
Microsoft logo
Microsoft
Medium
Technical Program Manager

Lead a cross-team launch

You are preparing for a Technical Program Manager behavioral interview. Build structured, interview-ready answers for this prompt cluster from the ori...

Behavioral & LeadershipLeadership & InfluenceRequirements & Launch Execution
14
0
153 people solved
Jan 1, 2024
Yahoo logo
Yahoo
Medium
Data Scientist

Calculate Total Spend and Identify Key User Metrics

Transactions +----+---------+--------+------------+ | id | user_id | amount | date | +----+---------+--------+------------+ | 1 | 101 | 23....

Data Manipulation (SQL/Python)
70
0
34 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Review an existing architecture for risks

This question evaluates an engineer's ability to perform an architecture review, identifying imminent scalability, reliability, operability, and secur...

System Design
11
0
88 people solved
Jan 6, 2026
Microsoft logo
Microsoft
Medium
Data Scientist

Compute sample size and analyze A/B results

A/B Test: Sample Size, Sequential Correction, and Post-Experiment Analysis Context You are planning a two-arm A/B test with a binary (Bernoulli) conve...

Statistics & MathExperiment Design (A/B Testing)Sequential & Adaptive Testing
12
0
116 people solved
Oct 13, 2025
LinkedIn logo
LinkedIn
Medium
Product Manager

Fleet-Sizing Estimate: 1-Ton Trucks for 24-Hour Grocery Delivery Across India

You run a grocery delivery business, comparable to India's app-based grocery services such as Blinkit or Instamart, that delivers to customers anywher...

Product / Decision MakingOperations & CapacityEstimation & Market Sizing
1
0
9 people solved
May 15, 2026
Apple logo
Apple
Medium
Software EngineerSenior+

Explain HashMap Resizing Without Long Pauses

Explain how a hash map works internally. Cover how keys are mapped to buckets, how collisions are handled, and when the table decides to resize. Follo...

Software Engineering Fundamentals
5
0
78 people solved
Oct 28, 2025
Meta logo
Meta
Medium
Machine Learning EngineerIntern

Implement scaled dot-product attention

Task In this interview you are asked to hand-write the forward pass of attention from the mathematical formula (no need to run code). Implement single...

Coding & Algorithms
6
0
88 people solved
Sep 2, 2025
Versemedical logo
Versemedical
Medium
Software Engineer Locked

Find Strictly Decreasing Forecast Windows for Equatorial Cities

Build a reliable report that queries equatorial cities from PostgreSQL, fetches three days of hourly forecasts, and finds every strictly decreasing ei...

Software Engineering Fundamentals
5
0
58 people solved
Jul 1, 2026
Perplexity logo
Perplexity
Medium
Software Engineer Locked

Design personalized discovery recommendations

This question evaluates understanding of recommender systems and personalization, covering skills in data collection and event logging, candidate retr...

ML System Design
8
0
137 people solved
Sep 4, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design a streaming median structure

Design a streaming median structure Design a data structure for a number stream that supports: add(num: int) in O(log n) time and median() -> float in...

Coding & Algorithms
4
0
64 people solved
Aug 7, 2025
Amazon logo
Amazon
Medium
Frontend EngineerNew Grad Locked

Drive an Improvement Beyond Your Formal Responsibilities

Describe a worthwhile improvement beyond your formal role, including evidence for its priority, influence without authority, a testable first step, me...

Behavioral & Leadership
1
0
25 people solved
Aug 22, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Find dictionary words matching a phone digit string

This question evaluates familiarity with phone-keypad character-to-digit mappings, string pattern matching, and efficient filtering of dictionary word...

Coding & AlgorithmsArrays & Strings
17
1
149 people solved
Jan 12, 2026
WeRide logo
WeRide
Medium
Software Engineer

Implement expression expansion to plus-only form

Given a string expression consisting only of lowercase letters (variables), '+', '*', '(', and ')', return an equivalent expression that uses only '+'...

Coding & Algorithms
4
0
69 people solved
Sep 6, 2025
Atlassian logo
Atlassian
Medium
Data Scientist

Expand Internationally: Data and Strategy for Market Entry

Expand Internationally: Data and Strategy for Market Entry Behavioral + Product Sense (Onsite) Context You are interviewing for a Data Scientist role ...

Behavioral & Leadership
97
0
197 people solved
Aug 4, 2025
XPeng logo
XPeng
Medium
Machine Learning Engineer

Discuss resume and company fit

Behavioral Prompt: Resume Walkthrough (RL or Systems), Motivation, and 6–12 Month Plan Context You are interviewing for a Machine Learning Engineer ro...

Behavioral & LeadershipMotivation & FitOwnership & Execution
13
0
105 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Compute max profit from single stock trade

Given an array prices where prices[i] is the stock price on day i, compute the maximum profit achievable with at most one transaction (one buy and one...

Coding & Algorithms
2
0
51 people solved
Sep 6, 2025
Perceptyx logo
Perceptyx
Medium
Software Engineer Locked

Demonstrate a Project and Defend Its Design

Prepare a technical project demo covering your contribution, implementation, impact, scale, design tradeoffs, and the requirements for a proposed new ...

Software Engineering FundamentalsProject Deep DiveSystem Design Fundamentals
2
0
33 people solved
Aug 27, 2026
Pinterest logo
Pinterest
Medium
Machine Learning EngineerSenior+ Locked

Design Detection Systems for Risk and Safety

This question evaluates a machine learning engineer's competence in designing end-to-end detection systems for risk and safety, covering skills in dat...

ML System Design
12
0
117 people solved
Feb 21, 2026
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