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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Uber logo
Uber
Medium
Software Engineer

Implement binary search from scratch

Question Implement binary search on a sorted integer array without using any library helpers (no bisect, Arrays.binarySearch, etc.). Provide both iter...

Coding & AlgorithmsBinary Search
17
0
128 people solved
Aug 1, 2025
Meta logo
Meta
Medium
Data Scientist

Compute 7-day views and reactions by relationship

Use the schemas and sample data below to answer two tasks. Assume dates are strings in 'YYYY-MM-DD'. Treat "today" as 2025-09-01; "last/past 7 days" m...

Data Manipulation (SQL/Python)
1
0
30 people solved
Oct 13, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Order SQL query logical processing steps

Consider a SQL query written in SQL-92 style: `sql SELECT foo, COUNT(foo) FROM pokes WHERE foo > 10 GROUP BY foo HAVING COUNT(foo) > 1 ORDER BY foo; `...

Software Engineering Fundamentals
5
0
79 people solved
Oct 24, 2025
Adobe logo
Adobe
Medium
Software Engineer

Determine task order with prerequisites

You are given n tasks labeled 0..n−1 and a list of prerequisite pairs (a, b) meaning task b must be completed before task a. Determine one valid order...

Coding & AlgorithmsGraphs
14
0
100 people solved
Sep 6, 2025
Capital One logo
Capital One
Medium
Data Scientist

Critique and Test Python Preprocessing Utilities Effectively

Scenario Code review of Python preprocessing utilities (OutlierHandler and three Imputer classes) Question Summarize, at a high level, what the Outlie...

Coding & Algorithms
14
0
104 people solved
Aug 4, 2025
Antra logo
Antra
Easy
Software Engineer

Explain core Java and Spring fundamentals

Java and Spring fundamentals You are interviewing for a backend Java/Spring role. Answer the following conceptual questions: 1. Collections & data str...

Software Engineering FundamentalsProgramming LanguagesConcurrency
7
0
110 people solved
Oct 9, 2025
Apple logo
Apple
Medium
Software Engineer

Optimize QA Benchmarks and Shared HPC Usage

A Software QA workflow runs benchmarks on shared high-performance computing (HPC) resources. How would you reduce resource usage and shorten turnaroun...

Software Engineering FundamentalsTesting & QualityJob Scheduling & Workflows
0
0
14 people solved
Mar 27, 2026
MathWorks logo
MathWorks
Easy
Software Engineer

Maximize minimum after K decrements

You are given an integer array A of length N and an integer K. You must perform exactly K operations. In each operation, choose any index i and do A[i...

Coding & Algorithms
5
0
87 people solved
Mar 1, 2026
Netflix logo
Netflix
Medium
Data Scientist

Write SQL for DAU and first-purchase conversion

Today is 2025-09-01. Using the schema and sample data below, write a single ANSI-SQL query that returns one row per day for the last 7 days (2025-08-2...

Data Manipulation (SQL/Python)SQL
26
0
212 people solved
Oct 13, 2025
PayPal logo
PayPal
Medium
Software Engineer

Design a Cross-Border Money Transfer Service

Design a cross-border money transfer service similar to a consumer remittance product. Users in one country should be able to send money to recipients...

System Design
4
0
72 people solved
Apr 14, 2026
Chime logo
Chime
Easy
Software Engineer

Explain sync/async, Go concurrency, SQL vs NoSQL

You are interviewing for a backend engineering role. Answer the following conceptual questions clearly and with concrete examples. 1) Synchronous vs a...

Software Engineering FundamentalsConcurrencyStorage & Sharding
31
0
288 people solved
Nov 13, 2025
Google logo
Google
Medium
Software Engineer Locked

Find shortest relationship path using BFS

This question evaluates proficiency in graph representations and traversal algorithms—specifically BFS and adjacency-structure construction—for comput...

Coding & AlgorithmsGraphs
27
1
191 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Machine Learning EngineerSenior+

Solve matrix components, median, and traversals

1) Binary matrix component: Given an m x n grid of 0s (background) and 1s (objects), return the size of the largest connected component where connecti...

Coding & Algorithms
7
0
97 people solved
Aug 11, 2025
Google logo
Google
Medium
Software Engineer

Maximize coins collected by 3-step pieces

You are given a 1D board of length N. Each cell is in one of three states: - Empty - Piece (a movable token) - Coin (collectible) In one move, you may...

Coding & AlgorithmsSimulation & State Machines
7
0
115 people solved
Sep 5, 2025
Applovin logo
Applovin
Hard
Software Engineer

Count invalid nodes in a BST

You are given the root of a binary tree. A valid Binary Search Tree (BST) must satisfy: for every node with value v, all values in its left subtree ar...

Coding & Algorithms
10
0
76 people solved
Nov 3, 2025
OpenAI logo
OpenAI
Hard
Software Engineer

Design a fullstack app with frontend focus

Design a fullstack app with frontend focus Design a Full‑Stack Web Application (Frontend Emphasis) Context You are given a 2–3 page requirements docum...

System DesignReact & UI FrameworksAPI Design
21
0
173 people solved
Jul 27, 2025
Databricks logo
Databricks
Hard
Software Engineer Locked

Find all anagram start indices

This question evaluates proficiency in string manipulation, algorithmic efficiency, and pattern detection through character frequency analysis, assess...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
18
1
168 people solved
Jan 7, 2026
Applied Intuition logo
Applied Intuition
Medium
Machine Learning Engineer

Debug a GPT training pipeline

Fix three bugs in a minimal GPT to meet a training-loss target You are given a Colab notebook with a minimal GPT-style language model implemented in P...

ML System DesignML CodingDebugging
22
0
180 people solved
Sep 6, 2025
Moveworks logo
Moveworks
Medium
Software Engineer

Select next Hangman letter

Given the current state of a Hangman game, implement a function that selects the next letter with the highest likelihood of appearing in the secret wo...

Coding & AlgorithmsString AlgorithmsArrays & Strings
29
1
283 people solved
Sep 6, 2025
Citadel logo
Citadel
Hard
Data Scientist Locked

Solve Classic Probability Questions

This set evaluates probabilistic reasoning and expectation computation across topics such as sequential conditional survival, convolution of continuou...

Statistics & MathProbabilityPuzzles & Brainteasers
28
0
211 people solved
Feb 21, 2026
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