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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
Databricks logo
Databricks
Hard
Software Engineer Locked

Design an Online Bookstore

This question evaluates a candidate's ability to design a scalable, fault-tolerant online bookstore by addressing service decomposition, functional re...

System DesignSystem Design Fundamentals
26
0
380 people solved
Mar 15, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Merge Overlapping Intervals with a Sweep

Implement merge_intervals(intervals) for closed integer intervals [start, end] with start <= end. Work through the function contract, boundary cases, ...

Coding & AlgorithmsIntervals & SchedulingSorting
14
1
170 people solved
Aug 11, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Build a File-Backed Key-Value Store

This question evaluates a candidate's understanding of persistent key-value storage, in-memory versus on-disk state management, serialization/deserial...

Coding & AlgorithmsKey-Value StoresFile & Media Storage
13
0
122 people solved
Apr 11, 2026
Retell AI logo
Retell AI
Hard
Software Engineer

Design and Implement a Mini SQL Query Engine

You're given a set of in-memory tables — each table is a collection of rows over a known, typed schema (e.g., a table is a list of row objects, and ea...

System Design
16
0
126 people solved
Jan 10, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Compute a Global Mode Across Distributed Partitions

Compute the mode of data partitioned across several workers using supplied send/receive-style communication primitives. Explain the protocol and how y...

Software Engineering FundamentalsBatch & Stream ProcessingPartitioning & Consistent Hashing
2
0
24 people solved
Mar 30, 2026
Amazon logo
Amazon
Medium
Software EngineerIntern

Explain conflict, ownership, and AI use

Question Prepare structured answers for an Amazon-style behavioral interview (intern / early-career software engineer) that probes leadership-principl...

Behavioral & LeadershipConflict & CollaborationOwnership & Execution
33
0
243 people solved
Feb 15, 2026
Affirm logo
Affirm
Medium
Software Engineer Locked

Aggregate loans and match repayments

This question evaluates the ability to aggregate transactional loan records and match repayment transactions to outstanding loans, testing competencie...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
13
1
165 people solved
Mar 7, 2026
Remitly logo
Remitly
Easy
Software Engineer

Compute transfers to balance account debts

Problem: Balance accounts by generating transfers You are given a dictionary/map balances from accountId -> netBalance. - A positive balance means the...

Coding & AlgorithmsGreedyTwo Pointers & Sliding Window
14
0
173 people solved
Nov 30, 2025
Attentive logo
Attentive
Medium
Software Engineer

Design a Data Puller for a Third-Party API Capped at 3 Requests per Second

Design a service that pulls data from a third-party provider's API into your own system and keeps it up to date. The provider enforces a hard rate lim...

System DesignRate LimitingAPI Integration & HTTP Clients
0
0
6 people solved
Sep 7, 2026
HackerRank logo
HackerRank
Medium
Software EngineerSenior+ Locked

Debug React Sorting, Persistence, Routing, and Accessibility

Prepare for a HackerRank software engineering interview question about debug react sorting, persistence, routing, and accessibility. The prompt highli...

Software Engineering Fundamentals
3
0
40 people solved
May 19, 2026
StubHub logo
StubHub
Medium
Software Engineer

Design Event Email System

Design Event Email System Design an event system that can manage at least 1,000,000 concurrent events and send notification emails to every registered...

System DesignSystem Design FundamentalsMessaging & Event-Driven
56
0
485 people solved
Aug 4, 2025
Roblox logo
Roblox
Medium
Software Engineer Locked

Implement a Rolling-Window Rate Limiter

Implement a single-process rolling-window rate limiter where only accepted requests consume capacity. Define exact boundary behavior, expire old times...

Software Engineering FundamentalsData Structure DesignRate Limiting
79
2
566 people solved
Jul 13, 2026
Stripe logo
Stripe
Medium
Software Engineer

Answer hiring manager behavioral questions

Hiring manager round: behavioral questions Prepare structured answers to the following questions (with likely follow-ups). Use concrete examples from ...

Behavioral & LeadershipMotivation & FitProject Deep Dive
32
0
234 people solved
Jan 22, 2026
Moveworks logo
Moveworks
Medium
Software Engineer

Compute Jaccard similarity between two strings

Jaccard Similarity of Two Strings Given two strings a and b, compute their Jaccard similarity based on token sets. Tokenization rules - Convert to low...

Coding & AlgorithmsArrays & Strings
17
0
257 people solved
Dec 15, 2025
Rippling logo
Rippling
Medium
Software Engineer

Implement a RESTful Q&A service

You are asked to build a small REST service (in any language/framework you choose) that resembles a minimal Stack Overflow-style Q&A system. Design an...

Software Engineering FundamentalsAPI Design
44
0
512 people solved
Jan 16, 2026
Capital One logo
Capital One
Medium
Data Scientist

Analyze Subscription, Insurance, App, and Card Cases

You are in a Data Scientist "power day" interview for a product analytics role. The interviewer gives you four independent business cases. For each on...

Analytics & ExperimentationBusiness Case Analysis
39
0
696 people solved
Apr 12, 2026
Rippling logo
Rippling
Medium
Software Engineer

Compare Two Five-Card Numeric Hands

Problem Compare two five-card hands in a numeric card game. Cards are digits 1 through 9, repetitions are allowed, and the category ranking is intenti...

Coding & Algorithms
5
0
59 people solved
Jan 25, 2026
Pinterest logo
Pinterest
Hard
Machine Learning Engineer Locked

Bias-Variance Tradeoff and Vanishing Gradients in Feedforward Networks

This question evaluates conceptual understanding of the bias-variance tradeoff and the vanishing-gradient problem in deep feedforward networks, two co...

Machine LearningML FundamentalsNeural Networks & Training
12
0
163 people solved
Jun 12, 2026
Two Sigma logo
Two Sigma
Medium
Data Scientist

Implement merge sort and largest 1-rectangle

The coding round included two algorithm questions: 1. Implement merge sort for an array of integers. Return the sorted array and explain its time and ...

Coding & Algorithms
16
0
125 people solved
Feb 26, 2026
Two Sigma logo
Two Sigma
Hard
Data Scientist

Assign 2n Workers to Two Tasks to Minimize Total Time

You manage 2n workers and two tasks, A and B. Every worker must be assigned to exactly one task, and each task must be staffed by exactly n workers. W...

Coding & Algorithms
5
0
76 people solved
Nov 28, 2025
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