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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
Google logo
Google
Easy
Software Engineer

Implement Batched Undo/Redo Layer

You are implementing a simplified document layer for a design tool. The layer stores properties as a map<string, string>. Implement a class that suppo...

Coding & AlgorithmsData Structure DesignStacks & Queues
17
0
140 people solved
Feb 4, 2026
Rbcroyalbank logo
Rbcroyalbank
Easy
Data EngineerSenior+

Explain ETL schema changes and ensure integrity

Behavioral / Data Engineering Discussion Prompts You’re interviewing for a Data Engineer role. Answer the following prompts with concrete examples fro...

Behavioral & LeadershipETL & Data PipelinesData Quality & Validation
11
0
120 people solved
Feb 8, 2026
Coinbase logo
Coinbase
Hard
Software Engineer Locked

Implement banking, knapsack, and pagination tasks

This multi-part question evaluates stateful system design, ordered event processing and scheduling semantics for an in-memory banking command processo...

Coding & AlgorithmsLow-Level Design (OOP)Dynamic Programming
28
0
329 people solved
Jan 22, 2026
XPeng logo
XPeng
Medium
Machine Learning Engineer

Compute optimal matrix multiplication order

Given an array dims[0..n] where matrix i has dimensions dims[i-1] × dims[i] (for i = 1..n), compute the minimum number of scalar multiplications neede...

Coding & Algorithms
8
0
64 people solved
Sep 6, 2025
Robinhood logo
Robinhood
Medium
Software EngineerSenior+ Locked

Explain auth, key rotation, secrets, and incident response

This question evaluates a candidate's competency in designing service-to-service authentication, key rotation, secret management, and technical incide...

Software Engineering FundamentalsAuthentication & AuthorizationCryptography
7
0
96 people solved
Jan 22, 2026
Adobe logo
Adobe
Medium
Software Engineer

Describe Your Two-to-Three-Year Growth Direction

Question Where do you want your work to develop over the next two to three years? Explain the capabilities, scope, and kinds of problems you want to g...

Behavioral & Leadership
1
0
18 people solved
Apr 19, 2026
Okta logo
Okta
Medium
Software EngineerSenior+ Locked

Validate IPv4 Address List

This question evaluates proficiency in string parsing, input validation, numeric boundary checks, and algorithmic complexity by requiring verification...

Coding & Algorithms
7
0
91 people solved
Mar 30, 2026
Microsoft logo
Microsoft
Easy
Data ScientistNew Grad

Explain KNN and PCA and key tradeoffs

In a Data Scientist internship interview, you are asked ML fundamentals: 1) K-Nearest Neighbors (KNN) - Explain how KNN works for classification and r...

Machine Learning
7
0
108 people solved
Nov 24, 2025
Snapchat logo
Snapchat
Medium
Software Engineer

Compute shortest recursive string encoding

Given a string s, compress it by replacing any consecutive repetition of a substring with the form k{pattern} where k > 1 and pattern may itself be re...

Coding & Algorithms
10
0
108 people solved
Jul 31, 2025
Meta logo
Meta
Medium
Data Scientist

Compute cohort GMV and payer rate with edge cases

You are given the following schema (timestamps are UTC): users(user_id INT, country STRING, created_at TIMESTAMP) events(user_id INT, event_ts TIMESTA...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
15
0
126 people solved
Oct 13, 2025
Anthropic logo
Anthropic
Medium
Software EngineerSenior+

Give a Credible Why-This-Organization Answer

Give a Credible Why-This-Organization Answer Answer a recruiter who asks why you want to join their mission-driven AI organization. Your response shou...

Behavioral & Leadership
8
0
62 people solved
Apr 24, 2026
LinkedIn logo
LinkedIn
Easy
Data Scientist Locked

How do you sample uniformly from an infinite stream?

This question evaluates understanding of streaming algorithms, randomized sampling and probability, and algorithmic space–time trade-offs involved in ...

Coding & AlgorithmsProbabilityMath & Number Theory
15
0
158 people solved
Feb 1, 2026
Character.AI logo
Character.AI
Medium
Software Engineer

Explain strings and copy complexity

Question What is a string? What fields does a struct string contain, and how would you implement it yourself? What is the time complexity of copying a...

Coding & Algorithms
6
0
50 people solved
Jul 29, 2025
Google logo
Google
Medium
Product Manager

Google Company Knowledge: Founding Search Problem, Mission and Product Fit

In a product manager interview at Google, you are asked to describe your understanding of the company: what problem led to Google being founded, and w...

Product Design & StrategyMotivation & FitProduct Strategy
0
0
8 people solved
Jul 19, 2026
Snowflake logo
Snowflake
Medium
DevOps Engineer Locked

Present Your Infrastructure and Platform Experience

Present one infrastructure or platform project through its users, architecture, reliability model, deployment path, observability, tool choices, and y...

Behavioral & Leadership
14
0
100 people solved
Aug 19, 2026
DRW logo
DRW
Easy
Data EngineerIntern Locked

Implement Nested Transactions in an In-Memory Database

Simulate an in-memory key-value database with nested transactions, visible layered reads, permanent-storage counts, rollback of the deepest transactio...

Coding & Algorithms
8
0
125 people solved
May 22, 2026
Walmart Labs logo
Walmart Labs
Medium
Software Engineer

Design a multi-carrier parcel delivery system

Design a system for shipping customer parcels that supports multiple delivery partners/carriers (e.g., UPS, USPS, FedEx). Your system should enable an...

System DesignSystem Design FundamentalsAPI Design
34
0
264 people solved
Mar 1, 2026
Pika logo
Pika
Medium
Software Engineer

Implement text formatter and sum subarray products

1) Text formatter (LC-inspired variant): Given an array of words and an integer maxWidth W >= 1, break the words into lines so that the total length o...

Coding & AlgorithmsArrays & StringsDynamic Programming
7
0
111 people solved
Aug 12, 2025
MathWorks logo
MathWorks
Hard
Software Engineer

Deduce position from logic clues

Constraint-Satisfaction on a 2D Grid with Relational Clues Context You are given a rectangular grid with R rows and C columns. A set of named entities...

Statistics & Math
11
0
112 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Identify Top-Buying Customers Daily with SQL Query

PRIME +-------------+------------+----------+ | Customer_ID | Start_Date | End_Date | +-------------+------------+----------+ | 1 | 2025-01-...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
20
0
86 people solved
Jul 12, 2025
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