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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
10.05.2026
12.0k Questions 570 Companies10.05.2026
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
Adobe logo
Adobe
Easy
Data Scientist

Understand P-Value's Role in Product Decision-Making

Understand P-Value's Role in Product Decision-Making Scenario You are a data scientist presenting A/B test results to non-technical executives who mus...

Statistics & Math
5
0
83 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Data Scientist

Decide and experiment on Group Call feature

Assume today is 2025-09-01. You have only one table, calls_daily_agg(date, user_id, country, device_tier, one_to_one_calls_started, one_to_one_call_du...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
43
0
335 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Implement cache and merge intervals

This question evaluates proficiency in designing and implementing efficient data structures (a fixed-capacity LRU key-value cache) and interval-proces...

Coding & Algorithms
4
0
48 people solved
Feb 23, 2026
Nextdoor logo
Nextdoor
Medium
Machine Learning Engineer

Implement ordering with dependency constraints

You are given n items labeled 0..n−1 and a list of precedence constraints edges[i] = [u, v] meaning u must appear before v. Return a valid ordering of...

Coding & AlgorithmsGraphsHeaps & Priority Queues
14
0
116 people solved
Sep 6, 2025
Hebbia logo
Hebbia
Medium
Software Engineer Locked

Design Hebbia Chat for SEC Filings

This question evaluates expertise in ML system design, specifically the ability to architect a multi-agent retrieval-augmented generation pipeline at ...

ML System Design
5
0
41 people solved
Jun 1, 2026
Meta logo
Meta
Hard
Data Scientist

Determine Key Metrics and Design A/B Test for Ad Ranking

Determine Key Metrics and Design A/B Test for Ad Ranking Experiment Design: Replacing Rule-Based Ad Ranking with a Recommender Context You are launchi...

Analytics & Experimentation
7
0
57 people solved
Aug 4, 2025
Lyft logo
Lyft
Medium
Data Scientist Locked

Compute Commuter Ride Probabilities

This question evaluates competency in probability theory—specifically conditional probability, marginalization, Bayesian inversion, and expectation of...

Statistics & MathProbability
14
0
118 people solved
May 28, 2026
Nexon logo
Nexon
Medium
Product Manager

Generate Feature Ideas

How do you come up with a new feature idea for a live-service game product? Describe a structured process for identifying opportunities, selecting the...

Product Design & Strategy
7
0
54 people solved
Jan 5, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Discuss feedback, help, and conflict

Behavioral and Leadership Questions (Software Engineer — Technical Screen) Answer each prompt concisely (about 60–90 seconds) using a structured frame...

Behavioral & Leadership
7
0
50 people solved
Sep 6, 2025
Shield Ai logo
Shield Ai
Easy
Software EngineerSenior+ Locked

Count Pairs with the Minimum Absolute Difference

Count unordered index pairs whose values have the minimum absolute difference in an integer array. Sorting reveals the minimum gap, while duplicate ru...

Coding & Algorithms
1
0
16 people solved
May 25, 2026
Salesforce logo
Salesforce
Medium
Machine Learning EngineerSenior+

Design a collaborative spreadsheet backend

Design a web-based spreadsheet service similar to Google Sheets, with emphasis on backend architecture and data models. Focus areas: - Multiple users ...

System Design
7
0
77 people solved
Jan 12, 2026
Amazon logo
Amazon
Medium
Data Scientist

Choose Between JOIN, BLEND, and RELATIONSHIP in Tableau

Choose Between JOIN, BLEND, and RELATIONSHIP in Tableau Tableau Data Modeling, Filters, and Visual Design Scenario You are preparing a Tableau dashboa...

Analytics & Experimentation
94
0
259 people solved
Aug 4, 2025
Luma AI logo
Luma AI
Hard
Software Engineer Locked

Implement Refactoring Assessment Features

This question evaluates proficiency in implementing spec-driven algorithms and data structures in Java, covering route reconstruction (directed graph/...

Coding & Algorithms
2
0
22 people solved
May 25, 2026
CVS Health logo
CVS Health
Medium
Data Scientist

Implement R² and Compare PCA With/Without Scaling

NumPy-only implementation: R² and PCA (Data Scientist take-home) Implement from scratch using only NumPy (no scikit-learn). Use float64 throughout and...

Machine Learning
4
0
75 people solved
Oct 13, 2025
Uber logo
Uber
Easy
Software Engineer

Solve three algorithmic optimization and search problems

You are given three independent coding problems. --- Problem 1: Allocate tasks between two workers to maximize reward You have n independent tasks tha...

Coding & AlgorithmsGreedyGraphs
16
0
119 people solved
Oct 7, 2025
Snapchat logo
Snapchat
Medium
Machine Learning Engineer Locked

Explain core ML fundamentals and tradeoffs

This question evaluates core machine learning fundamentals including bias–variance tradeoffs, overfitting, class imbalance handling, loss function sel...

Machine LearningML FundamentalsNeural Networks & Training
10
0
103 people solved
Jan 10, 2026
TikTok logo
TikTok
Hard
Data Scientist

Design an interference-robust A/B test for monetization

A/B Test Design: New Tipping UI on Creator Posts Context: You are launching a new tipping UI on creator (PGC/OGC) posts to increase creator monetizati...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
14
0
118 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Design a nearby places (proximity) service

Design a proximity search service like Yelp/Google Maps. Requirements: - Store places with (place_id, name, lat/lng, category, rating). - Query: “find...

System Design
5
0
47 people solved
Feb 25, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Design follow/follower classes

This question evaluates object-oriented design and data-structure modeling skills for directed graphs, testing competency in representing follow relat...

Software Engineering FundamentalsLow-Level Design (OOP)Graphs
40
0
358 people solved
Mar 1, 2026
Capital One logo
Capital One
Medium
Data Scientist

Identify country with highest sunny-day probability

Write SQL to find the country with the highest probability that a day is sunny. Use the schema and sample data below. Rules: consider a day sunny for ...

Data Manipulation (SQL/Python)SQLProbability
11
1
95 people solved
Oct 13, 2025
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