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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
League logo
League
Medium
Software Engineer

Design matrix-operations HTTP service and test strategy

You are given a take-home assignment to build a small backend server. The goal is not algorithmic difficulty but demonstrating solid software engineer...

Software Engineering Fundamentals
6
0
60 people solved
Oct 17, 2025
DoorDash logo
DoorDash
Hard
Data Scientist

Investigate Falling Successful Orders

You are interviewing for a Data Scientist role at DoorDash. In the Los Angeles market, the metric successful orders per day has declined over the last...

Analytics & Experimentation
9
0
92 people solved
Nov 1, 2025
Netflix logo
Netflix
Medium
Software Engineer

Demonstrate culture fit and deep dives

Demonstrate culture fit and deep dives Behavioral & Leadership Onsite: Culture Fit and Project Deep Dive (Software Engineer) Context You will be asses...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
21
0
240 people solved
Jul 17, 2025
Atlassian logo
Atlassian
Medium
Product Manager

Home Gardening Companion App: Segment, Pain Points, MVP and Success Metrics

Design a mobile app whose purpose is to help people who garden for enjoyment rather than for a living. Explain which gardeners you would build it for,...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
7 people solved
Oct 7, 2025
Amazon logo
Amazon
Medium
Software Engineer

Find longest segment with endpoints > interior

Given an integer array nums, find the length of the longest contiguous segment [i..j] (j−i+1 ≥ 2) such that both endpoints are strictly greater than e...

Coding & Algorithms
7
0
61 people solved
Sep 6, 2025
Hinge logo
Hinge
Easy
Data Engineer

Design a pipeline that ingests two real-time data sources into a data warehouse

You are given two real-time data sources and asked to design the data pipeline that brings them into the data warehouse: how data gets from the source...

System DesignETL & Data PipelinesData Ingestion & CDC
0
0
2 people solved
May 12, 2026
Shopify logo
Shopify
Medium
Product Manager

Grocery delivery app: design a trial offer that overcomes distrust of fresh produce

An online grocery delivery app has spotted a pattern: customers regularly buy from its other categories but skip fresh fruits and vegetables, because ...

Product Design & StrategyProduct Design & ImprovementGrowth & Monetization
0
0
6 people solved
Mar 30, 2025
Robinhood logo
Robinhood
Medium
Data Scientist

Identify Top Users with Declined Transactions in SQL

Transactions +----------------+---------+--------+----------+---------------------+ | transaction_id | user_id | amount | status | timestamp ...

Data Manipulation (SQL/Python)
5
0
65 people solved
Aug 4, 2025
Roku logo
Roku
Medium
Data Scientist Locked

Explain and quantify bias-variance tradeoff

This question evaluates understanding of the bias–variance tradeoff, the expected test-error decomposition into irreducible noise, bias^2, and varianc...

Machine Learning
7
0
90 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design 2D DP on a DAG

Design 2D DP on a DAG Given a directed acyclic graph G(V, E) with N nodes, M edges, a designated source s, and an integer L, design a 2D dynamic progr...

Coding & Algorithms
12
0
112 people solved
Jul 15, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Answer two coding questions (SQL and DP)

This multi-part question evaluates SQL query skills (handling distinct values, aggregation and edge-case NULL results) and algorithmic proficiency in ...

Coding & AlgorithmsDynamic ProgrammingSQL
28
0
242 people solved
Feb 12, 2026
Amazon logo
Amazon
Medium
Applied Scientist Locked

Explain why CTR rises but CVR unchanged

This question evaluates a candidate's competency in experimental design and statistical analysis, specifically interpreting divergent engagement and o...

Analytics & Experimentation
5
0
73 people solved
Jan 6, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Set a Mission, North Star and Guardrails for the Xbox Digital Storefront

You are a product manager at Microsoft on the Xbox team, and you own the digital content store where players browse for and buy games and other digita...

Analytics & ExperimentationMetrics & KPIs
0
0
5 people solved
Jul 23, 2026
Datadog logo
Datadog
Medium
Product Manager

PM system design: message delivery, storage and scaling for a messaging service

Design the system behind a messaging platform. Explain how a message gets from sender to recipient, where conversations are stored, and how the design...

System DesignTechnical Tradeoffs for PMsReal-Time Systems
1
0
9 people solved
Jan 25, 2024
Walmart Labs logo
Walmart Labs
Medium
Product Manager

Sizing Airbnb's US Revenue Bottom-Up from Listings, Booked Nights and Fees

You are interviewing for a product manager role and are asked to estimate, with no access to data, how much revenue Airbnb earns in a year from its bu...

Product / Decision MakingEstimation & Market Sizing
0
0
9 people solved
Jan 5, 2025
OneMain Financial logo
OneMain Financial
Medium
Data Scientist Locked

Choose evaluation metrics for imbalanced risk model

This question evaluates understanding of cost-sensitive decision making, probabilistic thresholding, evaluation metric selection under class imbalance...

Machine Learning
8
0
70 people solved
Oct 13, 2025
Intersystems logo
Intersystems
Medium
Software Engineer Locked

Measure 45 minutes with two ropes

This question evaluates logical and analytical reasoning about non-uniform processes, constraint-based problem solving, and temporal estimation skills...

Coding & Algorithms
5
0
54 people solved
Feb 12, 2026
Gusto logo
Gusto
Medium
Data Scientist Locked

Define Product Health and Experiment Design

This question evaluates competency in product analytics and experimentation, covering metric framework design, trade-offs and guardrail selection for ...

Analytics & ExperimentationMetrics & KPIsExperiment Design (A/B Testing)
12
0
101 people solved
May 27, 2026
Meta logo
Meta
Hard
Software Engineer

Design a product notifications system

System Design: Push Notifications and In‑App Messaging Platform Context Design a notifications platform for a large consumer mobile app with millions ...

System Design
4
0
67 people solved
Aug 14, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Write SQL for deliveries analytics

Write SQL for the following analytics tasks. Assume a PostgreSQL-like dialect unless otherwise stated. Treat "today" as 2025-09-01. Schema: - users(us...

Data Manipulation (SQL/Python)
3
0
50 people solved
Oct 13, 2025
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