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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k 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
Capital One logo
Capital One
Medium
Data Scientist

Design A/B Test for Marketing Campaign Impact Evaluation

Design A/B Test for Marketing Campaign Impact Evaluation Scenario A credit card issuer is testing a marketing campaign that waives the first-year annu...

Analytics & Experimentation
35
0
158 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Implement range-sum tree and sort merged lists

Implement range-sum tree and sort merged lists 1) Given a binary tree whose nodes store integer values, and two integers low and high defining an incl...

Coding & Algorithms
7
0
54 people solved
Jul 16, 2025
Uber logo
Uber
Medium
Data Scientist

Assess Cultural Fit and Leadership Potential in Candidates

Behavioral Phone Screen: Cultural Fit and Leadership Potential You are in a Data Scientist phone screen focused on cultural fit, leadership potential,...

Behavioral & LeadershipLeadership & InfluenceFailure & Learning
22
0
92 people solved
Jul 12, 2025
Splunk logo
Splunk
Medium
Product Manager

Career Motivation & Core Behaviors

Splunk Product Manager Career Motivation and Core Behaviors Prepare for a Splunk Product Manager behavioral onsite focused on career motivation, softw...

Behavioral & Leadership
10
0
47 people solved
Jul 4, 2025
Capital One logo
Capital One
Hard
Data Scientist

Prevent data registration outage and reduce loss

Preventing Silent Failures in the Premium Registration Pipeline Context A premium registration pipeline silently failed for three months, causing thou...

Behavioral & Leadership
6
0
73 people solved
Oct 13, 2025
Dropbox logo
Dropbox
Medium
Software Engineer

Implement hierarchical folder access check

You are asked to simulate a simple hierarchical file system and implement an access-check function. The file system consists of folders arranged in a ...

Coding & AlgorithmsAuthentication & AuthorizationTrees
10
0
106 people solved
Oct 18, 2025
Speak logo
Speak
Hard
Software Engineer

Design speaking scenarios and auth/profile API

System Design Task: Speaking-Scenario Practice Feature + MVP Auth API Context: You are designing a new speaking-scenario practice capability for a lan...

System DesignSystem Design FundamentalsAPI Design
7
0
141 people solved
Sep 6, 2025
Point72 logo
Point72
Medium
Quantitative Researcher

Calibrate the Risk-Aversion Parameter

Calibrate the Risk-Aversion Parameter A mean-variance portfolio optimizer uses expected return minus a risk-aversion parameter times predicted varianc...

Statistics & Math
1
0
19 people solved
Jun 7, 2025
OneMain Financial logo
OneMain Financial
Medium
Data Scientist

Determine Channel Performance with Additional Metrics Needed

Determine Channel Performance with Additional Metrics Needed Compute Expected Purchases and Revenue by Channel Context A company sells a product throu...

Analytics & ExperimentationMetrics & KPIs
5
0
91 people solved
Aug 4, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design a configuration subscription service

System Design: Configuration Service with Subscriptions Context Design a multi-tenant configuration service that stores key–value configuration and le...

System DesignSystem Design FundamentalsKey-Value Stores
11
0
86 people solved
Sep 6, 2025
Spokeo logo
Spokeo
Medium
Data Scientist

Solve Logic Puzzles: Algorithms and Proofs Required

Solve Logic Puzzles: Algorithms and Proofs Required Scenario On-site logic/algorithm quiz with hiring manager and VP Question Solve six AMC-8–level ma...

Coding & Algorithms
7
0
52 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Design a mini banking system

Design a mini banking system In-Memory Banking System — Design and Implementation You are to design and implement an in-memory banking system that sup...

System DesignData Structure DesignHeaps & Priority Queues
12
0
108 people solved
Aug 7, 2025
Capital One logo
Capital One
Medium
Data Scientist

Design late-tolerant streaming window aggregator

You receive an unbounded stream of events: (event_time, user_id, category). Events may arrive up to 48 hours late and are not ordered by time. Design ...

Coding & AlgorithmsBatch & Stream ProcessingData Ingestion & CDC
10
0
94 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Hard
Site Reliability Engineer

Place Non-Attacking Queens

Given an integer n, return all valid configurations for placing n queens on an n x n chessboard so that no two queens attack each other. A queen attac...

Coding & Algorithms
1
0
19 people solved
Apr 19, 2026
Hard
Data Scientist

Design an A/B test with guardrails

A/B Test Plan for a New Checkout Flow (Onsite Data Scientist) Context: You will run an online experiment of a new checkout flow. The baseline conversi...

Analytics & Experimentation
5
0
51 people solved
Oct 13, 2025
O
Others
Easy
Data Scientist

Answer ancestor-walk queries on a rooted tree

Problem (Tree / Parent Array Queries) You are given a rooted tree with n nodes labeled 1..n, represented by a parent array par[1..n]: - par[i] is the ...

Coding & Algorithms
2
0
40 people solved
Jan 17, 2026
Amazon logo
Amazon
Hard
Data Scientist Locked

Design a robust traffic forecasting pipeline

This question evaluates a candidate's competency in end-to-end time-series forecasting pipeline design, covering data cleaning and missing-value handl...

Machine Learning
6
0
47 people solved
Oct 13, 2025
Roblox logo
Roblox
Medium
Data Scientist

Compute GSP vs VCG payments with reserves

Sponsored Search Auction with Quality Scores and Reserve You are analyzing a single-query auction with 2 ad slots. Position CTR multipliers are [0.10,...

Statistics & Math
7
0
83 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze VR App Usage and Engagement Metrics

vr_usage +---------+------------+---------+------------+----------+ | user_id | date | app_id | session_id | duration | +---------+------------...

Data Manipulation (SQL/Python)
50
0
15 people solved
Jul 12, 2025
CloudTrucks logo
CloudTrucks
Medium
Data Scientist

Calculate Average Rate and Cumulative Jobs by State

jobs +--------+---------+-----------+------------+----------------+-------+----------------+---------------+ | job_id | load_id | driver_id | status ...

Data Manipulation (SQL/Python)
1
0
23 people solved
Aug 4, 2025
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