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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Meta logo
Meta
Medium
Data Scientist

Design A/B Test for Short-Video Recommendation Algorithm

Design A/B Test for Short-Video Recommendation Algorithm A/B Test: New Short‑Video Recommendation Algorithm Context You are evaluating a new recommend...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
10
0
90 people solved
Aug 4, 2025
Instacart logo
Instacart
Hard
Software EngineerSenior+ AI Locked

Design a bus simulation metric

This question evaluates a candidate's ability to comprehend and navigate a large unfamiliar codebase, safely make targeted code changes, and design, i...

Software Engineering FundamentalsCode Quality & MaintainabilityObservability
9
0
82 people solved
Jan 29, 2026
Medium
Data Scientist

Write SQL to analyze response accuracy and speed

You are given response-level data for an online assessment with sections verbal/design/analytics and verbal subtypes grammar/vocab/tense/other. Using ...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
2
0
53 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Evaluate Recommendation Feature with Historical Data Analysis

Offline Evaluation of a Recommendation Feature With Historical Data The company is considering launching a new recommendation-system feature and wants...

Analytics & Experimentation
26
0
71 people solved
Jul 12, 2025
Garner Health logo
Garner Health
Medium
Software EngineerSenior+ Locked

Validate a String of Brackets

Validate a bracket string by ensuring every closing symbol matches the most recent unmatched opener. The task tests stack discipline, nesting order, e...

Coding & Algorithms
2
0
25 people solved
May 24, 2026
Meta logo
Meta
Medium
Software Engineer

Solve grid shortest path and robot cleaning

Question LeetCode 1091. Shortest Path in Binary Matrix; LeetCode 489. Robot Room Cleaner https://leetcode.com/problems/shortest-path-in-binary-matrix/...

Coding & Algorithms
5
0
61 people solved
Aug 4, 2025
Apple logo
Apple
Hard
Data Scientist

Implement random forest with OOB and imbalance

Implement a Memory-Efficient Random Forest (Binary Classification) Under Constraints You are asked to design and implement a Random Forest for binary ...

Machine Learning
7
0
84 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Software Engineer

Describe career plan and teamwork approach

Answer the following behavioral questions: 1. Career planning: What are your next 1–3 year career goals, and why are you pursuing this role/team now? ...

Behavioral & Leadership
7
0
67 people solved
Dec 8, 2025
Figma logo
Figma
Medium
Software Engineer

Describe adapting communication to interviewer preferences

Behavioral: Calibrating Your Depth to the Hiring Manager Context: HR Screen for a Software Engineer role. Describe a time you intentionally avoided sh...

Behavioral & LeadershipCommunication & Stakeholders
15
0
159 people solved
Sep 6, 2025
Tubi logo
Tubi
Medium
Data Scientist

Compute daily net users from event logs

Given an event log, write SQL to compute, for the target date 2025‑09‑01 ("today"), the counts of new users, retained users, churn users, and net user...

Data Manipulation (SQL/Python)
4
0
31 people solved
Oct 13, 2025
Freddie Mac logo
Freddie Mac
Hard
Data Scientist

Design a hierarchical MF delinquency forecasting system

Forecasting 90+ Day Delinquency Rates for Multifamily Loans: Hierarchical, Leakage-Safe System Design Context You need to forecast 90+ day delinquency...

Machine Learning
5
0
75 people solved
Oct 13, 2025
Snapchat logo
Snapchat
Medium
Data Scientist

Compute posterior spam risk from flags

A binary classifier flags spammy requesters. Last week the base rate of spam among all requesters was 12%. The classifier has true positive rate (TPR)...

Statistics & Math
8
0
84 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Convince PM to Implement Duplicate Observation Tool

Convince PM to Implement Duplicate Observation Tool Scenario Meta is considering building a Duplicate Observation Tool (DOT) to detect malicious copy‑...

Analytics & Experimentation
7
0
49 people solved
Aug 4, 2025
Intuit logo
Intuit
Medium
Data Scientist

Compute churn and revenue churn in SQL

You receive monthly end-of-month subscription snapshots and must compute August-2025 churn metrics. Schema and sample data: Table: subscription_monthl...

Data Manipulation (SQL/Python)
4
0
35 people solved
Oct 13, 2025
Lyft logo
Lyft
Easy
Software Engineer

Validate a Binary Search Tree Iteratively

Problem Determine whether a binary tree is a valid binary search tree. Every value in a node's entire left subtree must be smaller than the node value...

Coding & Algorithms
3
1
46 people solved
Apr 14, 2026
Amazon logo
Amazon
Hard
Data Scientist

Choose Models for Imbalanced Data and Time-Series Forecasting

Choose Models for Imbalanced Data and Time-Series Forecasting Scenario You must choose and tune models for (a) forecasting marketplace demand with sea...

Machine LearningTime Series & ForecastingSupervised Learning
58
0
212 people solved
Aug 4, 2025
Parafin logo
Parafin
Medium
Software Engineer

Demonstrate leadership and product collaboration

Demonstrate leadership and product collaboration Behavioral & Leadership (Software Engineer Onsite) Context: This multi-part behavioral prompt evaluat...

Behavioral & Leadership
7
0
71 people solved
Jul 31, 2025
Samsung logo
Samsung
Medium
Data Scientist

Estimate laptops in an office

Give a back-of-the-envelope estimate for how many laptops are physically present in a typical corporate office at a given moment. State your assumptio...

Statistics & Math
3
0
59 people solved
Mar 19, 2026
StubHub logo
StubHub
Medium
Software EngineerSenior+

Design Internal Chat and Re-engagement Emails

Design an internal chat system for an event marketplace company. Requirements: - Employees can send and receive one-to-one messages in real time. - Cl...

System DesignReal-Time SystemsMessaging & Event-Driven
6
0
104 people solved
Feb 16, 2026
Netflix logo
Netflix
Hard
Data Scientist

Design A/B Test for Streaming Feature Network Effects

Design A/B Test for Streaming Feature Network Effects A/B Test Design With Potential Social-Network Spillovers (Streaming Platform) Context You are de...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
15
0
128 people solved
Aug 4, 2025
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