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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Coinbase logo
Coinbase
Medium
Software Engineer

Handle recruiter transparency and background checks

Handle recruiter transparency and background checks Candidate Disclosures, Background Checks, and Professional Communication Context You are interview...

Behavioral & LeadershipEthics & ResponsibilityCommunication & Stakeholders
22
0
154 people solved
Jul 31, 2025
Blink logo
Blink
Hard
Software Engineer Locked

Design a Support Ticket Processing System

Prepare for a Blink system design interview about design a support ticket processing system. This question focuses on requirements, architecture, trad...

System Design
2
0
22 people solved
Jun 28, 2026
eBay logo
eBay
Medium
Software Engineer Locked

Design a Top-K trending service

This question evaluates skills in distributed system design, real-time stream processing, scalable aggregation, windowing semantics, and trade-offs ar...

System DesignReal-Time SystemsBatch & Stream Processing
7
0
133 people solved
Jan 15, 2026
Applied Intuition logo
Applied Intuition
Medium
Machine Learning Engineer

Implement correct attention masking

Autoregressive Transformer: Correct Attention Masking with Padding Context: You are implementing decoder self-attention for an autoregressive Transfor...

Machine LearningTransformers & AttentionML Coding
7
0
152 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Data Scientist

Compute maximum concurrent trips from intervals

You’re given n trip intervals [start, end) in seconds, where start < end, representing when a rider’s trip starts and ends in a city on a specific day...

Coding & AlgorithmsIntervals & SchedulingSorting
20
0
207 people solved
Oct 13, 2025
Faire logo
Faire
Medium
Software Engineer

Print a Centered Pascal Triangle

Given a positive integer height, generate the first height rows of Pascal's triangle and print them as a centered text triangle. Formatting requiremen...

Coding & Algorithms
3
0
66 people solved
Apr 10, 2026
Startups.Com logo
Startups.Com
Medium
Machine Learning Engineer

Explain attention variants and their tradeoffs

You are asked to explain and reason about modern Transformer attention mechanisms. 1) Scaled dot-product attention - Define the operation mathematical...

Machine Learning
4
0
85 people solved
Mar 10, 2026
Jane Street logo
Jane Street
Hard
Software Engineer

Evaluate a Tokenized Arithmetic Expression

Evaluate a Tokenized Arithmetic Expression You are given an arithmetic expression that has already been tokenized for you — you do not need to write a...

Coding & AlgorithmsStacks & Queues
38
2
312 people solved
Sep 14, 2022
Lyft logo
Lyft
Hard
Data Scientist

How to Target Coupon Users

A ride-sharing company such as Lyft wants to launch a coupon campaign to increase commuter rides, but the coupon budget is limited. How would you anal...

Analytics & ExperimentationPersonalizationCausal Inference
12
0
160 people solved
Dec 16, 2025
Microsoft logo
Microsoft
Hard
Software Engineer

Navigate bias, sponsorship, and domain misalignment

Behavioral & Leadership Onsite: Expertise Gaps, Fairness, Sponsorship, and AI Pivot Context You are interviewing for a Software Engineer role. Provide...

Behavioral & LeadershipCommunication & StakeholdersLeadership & Influence
5
0
102 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Hard
Software Engineer

Design a dynamic rental pricing system

System Design: ML-Driven Nightly Pricing for Short-Term Rentals Context Design a production ML system that recommends (and optionally auto-sets) night...

ML System DesignExperiment Design (A/B Testing)Feature Engineering
19
0
182 people solved
Aug 12, 2025
Apple logo
Apple
Medium
Software Engineer Locked

Explain key React concepts and error handling

This question evaluates competency in React fundamentals, including understanding of the Virtual DOM, Hooks usage, React 18 concurrent features, serve...

Software Engineering FundamentalsReact & UI FrameworksState Management
15
0
118 people solved
Feb 12, 2026
Pinterest logo
Pinterest
Medium
Software Engineer

Implement a min-heap column allocator

You are given an integer k (number of columns) and an array posts of positive integers where posts[i] is the height of the i-th post. All columns star...

Coding & AlgorithmsHeaps & Priority QueuesData Structure Design
28
0
241 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Implement Function to Return First n Prime Numbers

Scenario Quick algorithm screen to gauge Python fluency. Question Implement a Python function that returns the first n prime numbers. Hints An optimiz...

Coding & Algorithms
13
0
74 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Applied Scientist

Implement K-means and solve interval/frequency tasks

Task 1 — Describe/implement K-means clustering Given: - A data matrix X with shape (n_samples, d). - An integer k (number of clusters). Explain (or wr...

Coding & AlgorithmsUnsupervised LearningIntervals & Scheduling
11
0
117 people solved
Dec 15, 2025
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Design a food delivery system

This question evaluates system design competencies including distributed architecture, scalability, real-time event propagation, API and data modeling...

System DesignGeo & Delivery SystemsReal-Time Systems
20
0
252 people solved
Jan 22, 2026
Google logo
Google
Medium
Data Scientist

Analyze Linear Regression Changes with Duplicated Observations

Linear Regression, P-values, and Chi-square with Large Samples You are analyzing regression and goodness-of-fit results. Consider what happens if ever...

Statistics & MathRegression & Statistical ModelingHypothesis Testing
123
0
456 people solved
Jul 12, 2025
Uber logo
Uber
Medium
Software EngineerSenior+ Locked

Quadtree for 2D Geospatial Points

This question evaluates the ability to design a spatial data structure, specifically a point quadtree, for storing and querying two-dimensional coordi...

Coding & Algorithms
2
0
29 people solved
Jun 28, 2026
Capital One logo
Capital One
Easy
Data Scientist

Calculate Annual Profit of Credit Card Portfolio

Credit Card Portfolio Annual Profit You manage a portfolio of 500,000 active credit-card accounts. Each active card generates multiple revenue streams...

Statistics & MathBusiness Case Analysis
27
0
142 people solved
Jul 12, 2025
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Evaluate Architecture and Capacity Trade-offs

This multi-part question evaluates system architecture trade-offs, capacity and storage planning, security-aware component design, and document dedupl...

Software Engineering Fundamentals
2
0
36 people solved
Nov 10, 2025
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