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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
Shopify logo
Shopify
Hard
Data Scientist

Explain life story, project leadership, and negotiation

Behavioral & Leadership — HR Screen (Data Scientist) In a single, structured answer, address all items below with specific dates, names, and quantifie...

Behavioral & LeadershipMotivation & FitProject Deep Dive
13
0
110 people solved
Oct 13, 2025
Capital One logo
Capital One
Hard
Data Scientist

Assess transition and profitability under fossil-fuel constraints

Energy One: Transition from Fossil Fuels to Renewables Context Energy One currently has a total technical maximum output of 8.8 million MWh/year. Regu...

Behavioral & LeadershipBusiness Case AnalysisMetrics & KPIs
6
0
105 people solved
Oct 13, 2025
Optiver logo
Optiver
Medium
Quantitative Trader

Devise sequence-rule detection strategy

You are given an integer sequence with 2 ≤ n ≤ 50 terms, possibly following rules such as arithmetic/geometric progressions, alternating patterns, pol...

Coding & AlgorithmsMath & Number Theory
12
0
121 people solved
Sep 6, 2025
Two Sigma logo
Two Sigma
Medium
Software Engineer

Maximum Group of Pairwise Strangers in an Acquaintance Tree

You are given a social network of n people, labeled 0 through n - 1. For some pairs of people, it is known that the two people in the pair know each o...

Coding & Algorithms
8
0
92 people solved
Jul 23, 2025
Sentry.Io logo
Sentry.Io
Medium
Software Engineer Locked

Design a Book Purchase Broker

Design a system for brokering book purchase requests across partner bookstores with target price constraints and expiration windows. The question eval...

System Design
2
0
29 people solved
Jun 12, 2026
Google logo
Google
Medium
Data Scientist

Clarify ambiguous requirements under pressure

Behavioral & Leadership Prompt — Problem Understanding and Clarification (Data Scientist, Technical Screen) Part 1 — Past Experience Describe a time y...

Behavioral & LeadershipCommunication & StakeholdersAmbiguity & Decision Making
15
0
138 people solved
Oct 13, 2025
Stripe logo
Stripe
Medium
Data Scientist

Implement streaming per-user reservoir sampling

Design and code (in Python) a streaming algorithm that ingests an unbounded event stream of tuples (user_id, event_time, event_type) and maintains, fo...

Coding & Algorithms
3
0
48 people solved
Oct 13, 2025
Bilt Rewards logo
Bilt Rewards
Medium
Software Engineer

Write SQL to Join Merchants and Triple Restaurant Points

You are given: ( 1) a CSV file merchants.csv with columns: merchant_name, merchant_code, category; ( 2) a database table transactions(user_id INT, mer...

Data Manipulation (SQL/Python)
10
0
89 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Software Engineer

Simulate one-round color elimination on a grid

Given an m x n integer matrix board where board[r][c] > 0 represents a color and 0 represents empty: ( 1) A nonzero cell at (r,c) explodes in this rou...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
16
0
110 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Product Manager

Diagnose Mixed Reactions to an Instagram Profile Grid Redesign and Plan the Response

Instagram recently changed the profile grid, the tiled view of a person's posts on their profile, and the reaction has been mixed: some people like it...

Analytics & ExperimentationUser Research & DiscoveryLaunch Evaluation
1
0
12 people solved
Aug 10, 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
Squarepoint logo
Squarepoint
Medium
Quantitative Researcher Locked

Choose Between an Array and a Linked List

Compare arrays and linked lists beyond Big O notation. Cover cache locality, allocation and pointer overhead, reference stability, and practical choic...

Software Engineering Fundamentals
8
0
62 people solved
Aug 29, 2026
Playstation logo
Playstation
Medium
Data ScientistSenior+

Design Experiments Under Network Interference

You are a Senior Data Scientist for a gaming platform such as PlayStation. Answer the following experimentation questions. 1. A/A test validation: The...

Analytics & Experimentation
7
0
56 people solved
Apr 2, 2026
Box logo
Box
Medium
Software Engineer

Identify and fix deadlock in locked code

Identify and fix deadlock in locked code Multithreaded Deadlock: Diagnose and Fix Context You have concurrent code that acquires multiple locks and oc...

System DesignConcurrencyDebugging
25
0
243 people solved
Aug 1, 2025
Anthropic logo
Anthropic
Hard
Machine Learning Engineer

Demonstrate culture fit and leadership

Behavioral & Leadership — Machine Learning Engineer (Onsite) Instructions Answer concisely using the STAR framework (Situation, Task, Actions, Results...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
36
0
311 people solved
Aug 14, 2025
Amazon logo
Amazon
Easy
Software EngineerIntern

Describe handling deadlines, pride, and conflict

Behavioral questions Answer the following interview prompts with concrete examples from your past work/school/internships: 1. Tight deadline: Tell me ...

Behavioral & LeadershipOwnership & ExecutionConflict & Collaboration
16
0
246 people solved
Feb 11, 2026
Illumio logo
Illumio
Medium
Software Engineer Locked

Design Multicloud Publishing and API Gateway

This question evaluates understanding of distributed systems and cloud architecture, covering reliable database-to-multicloud event publishing (messag...

System Design
7
0
45 people solved
May 24, 2026
Citadel logo
Citadel
Medium
Data Scientist

Implement Piecewise Linear Interpolation and Extrapolation

Given n points (x_knots[i], y_knots[i]) in arbitrary order and a query x_input, implement piecewise linear interpolation without using an interpolatio...

Coding & Algorithms
8
0
57 people solved
Apr 15, 2026
Amazon logo
Amazon
Medium
Data Scientist

Explain Decision-Tree Training and Clustering Algorithms

Explain Decision-Tree Training and Clustering Algorithms Decision Trees and Clustering: Training Mechanics and Core Principles Context Technical/phone...

Machine LearningSupervised LearningUnsupervised Learning
86
0
289 people solved
Aug 4, 2025
OpenAI logo
OpenAI
Medium
Data Scientist

Analyze A/B Test Results for Subscription Conversion Rates

Analyze A/B Test Results for Subscription Conversion Rates An A/B test offers free users a limited-time trial of the paid plan to see whether it incre...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
130
1
378 people solved
Jul 12, 2025
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