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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
Amplitude logo
Amplitude
Medium
Software Engineer

Design a Shared Todo App

Design an online application for sharing todo lists with other users. The interviewer asked for: - the core product requirements and user flows, - bac...

System Design
5
1
88 people solved
Mar 3, 2026
Two Sigma logo
Two Sigma
Hard
Data Scientist

Explain why the t-statistic helps

Suppose you estimate an effect size \(\hat{\beta}\) in a regression model or an A/B test and compute a standard error \(SE(\hat{\beta})\). Explain why...

Statistics & MathHypothesis Testing
20
0
274 people solved
Mar 13, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Resolve Conflict Within a Team

Tell a fair, specific story about a team conflict that materially affected the work. Explain the underlying disagreement, your own contribution and mi...

Behavioral & Leadership
2
0
16 people solved
Aug 21, 2026
Interactive Brokers logo
Interactive Brokers
Medium
Data Engineer

Compute Minimum Production Days

Question You are given a list of product IDs products, where products[i] is the type of the product that must be produced at step i, and a non-negativ...

Coding & Algorithms
10
0
94 people solved
Jan 25, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Implement IP Address Arithmetic

This question evaluates proficiency in IP addressing, parsing and validation, binary/address-space arithmetic, CIDR subnet calculation, and formatting...

Coding & Algorithms
16
3
120 people solved
May 12, 2026
Balyasny logo
Balyasny
Hard
Software Engineer Locked

Design a C++ Variant with Safe Object Lifetimes

Design a C++ variant implementation with aligned storage, active-type tracking, checked access, object-lifetime management, and copy/move exception be...

Software Engineering FundamentalsProgramming LanguagesMemory Management
3
0
28 people solved
May 25, 2026
Tesla logo
Tesla
Medium
Software Engineer Locked

Reason About Character Paths in a Grid

Explain how to collect characters along a grid path and extend DFS to branching paths while clarifying adjacency, termination, cycles, and result orde...

Software Engineering Fundamentals
7
0
63 people solved
Aug 24, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Explain C++ Inline Semantics and Trade-Offs

Explain that C++ inline semantics permit suitable definitions across translation units but do not require call-site expansion. Evaluate compiler optim...

Software Engineering Fundamentals
6
0
62 people solved
May 15, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Design a batch inference API

Design an Asynchronous (POST-and-Poll) Inference Service API Design an asynchronous inference service for serving model predictions. A client submits ...

ML System DesignSystem Design FundamentalsAPI Design
84
0
1269 people solved
Sep 6, 2025
Whatnot logo
Whatnot
Medium
Software Engineer

Propose and Validate a Mobile App Improvement

Assume you are working on a consumer mobile app. Propose one product improvement that could improve user engagement, retention, or conversion. Your an...

System DesignProduct SenseExperiment Design (A/B Testing)
12
0
114 people solved
Jan 24, 2026
Optiver logo
Optiver
Hard
Software Engineer

Design a topic-based news subscription system

Topic-Based News Subscription Service — Design and Implementation Context Build an in-memory service that manages subscribers and delivers relevant ne...

System DesignSearch & Feed SystemsRate Limiting
83
0
1451 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Design a Geolocation Search Service

Prepare for a Snowflake system design interview about design a geolocation search service. This question focuses on requirements, architecture, trade-...

System DesignSearch & Feed SystemsGeo & Delivery Systems
21
0
359 people solved
Jul 4, 2026
Deshaw logo
Deshaw
Hard
Software Engineer

Compare Fixed and Variable Train Gaps Without a Timetable

Compare Fixed and Variable Train Gaps Without a Timetable Compare two train services for a commuter who arrives without consulting a timetable. Servic...

Statistics & Math
3
0
40 people solved
Apr 20, 2026
Coreweave logo
Coreweave
Medium
Software EngineerSenior+

Implement web data fetch and storage tool

Problem You are asked to implement a small program that retrieves data from a remote web service protected by token-based authentication, parses the r...

Coding & AlgorithmsAPI Integration & HTTP Clients
29
0
431 people solved
Oct 11, 2025
Stripe logo
Stripe
Medium
Software Engineer Locked

Find linked merchants by shared fields

This question evaluates the ability to model and detect entity linkages via exact field matching and weighted scoring as well as to reason about reach...

Coding & Algorithms
9
0
121 people solved
Jan 6, 2026
Harvey logo
Harvey
Medium
AI Agent Locked

Explain a Project Whose Schedule Became Unusually Tight

Explain a project whose schedule became unusually tight, including the earliest warning and the decision you personally owned. Show how you changed sc...

Behavioral & Leadership
5
0
37 people solved
Aug 14, 2026
Upstart logo
Upstart
Easy
Software Engineer Locked

Report Where a Value Appears

Report four flags showing whether a target appears at an even index, an odd index, in the first half, and in the second half of an even-length list. U...

Coding & Algorithms
4
0
42 people solved
Jul 5, 2026
Atlassian logo
Atlassian
Hard
Software Engineer

Design crawler storing only image URLs

System Design: Image-URL Crawler (URLs only, no HTML storage) Context Design a production web crawler that fetches HTML pages and extracts only image ...

System DesignSystem Design FundamentalsNetworking
22
1
161 people solved
Sep 6, 2025
Tradedesk logo
Tradedesk
Medium
Frontend Engineer

Object-Oriented Design of an Elevator Control System

Design an elevator control system using object-oriented design. Identify the classes and their responsibilities, show how a button press becomes an el...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
1
0
14 people solved
Sep 15, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Design a Scheduler for ML Training and Batch Inference Jobs

Design a scheduler for training, batch inference, and lower-priority evaluation jobs across shared compute resources. Model workload-specific needs, a...

System Design
4
0
61 people solved
Jun 24, 2026
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