DopplerHQ/awesome-interview-questions

Programming Languages/Frameworks/Platforms

ReactJS

React Interview Questions & Answersstars20.9k

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NodeJS

Node.js Interview Questions by learning-zonestars1.7k

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Elastic

Top Elastic Stack Interview Questions

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Angular

Top Angular Interview Questions and Answers in 2021

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Docker

Top 50+ Docker Interview Questions and Answers in 2021

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jQuery

Top JQuery Interview Questions and Answers

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CSS

Front End Interview Handbook - CSS Questions and Answers

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HTML

Front End Interview Handbook - HTML Questions and Answers

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JavaScript

Front End Interview Handbook - JavaScript Questions and Answers

Algorithms

Tech Interview Handbook Best Practice Questions

Comprehensive lists

Front End Interview Handbook

Data Science

Top Data Science Interview Questions

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Java

List of Java programs for interview Categoriwise

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ReactJS

Toptal's 21 Essential React.js Interview Questions

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Spark

Carefully Curated 70 Spark Questions with Additional Optimization Guides (First in the series)stars458

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Docker

Top 50 Docker Interview Questions & Answers

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Vue.js

List of 300 VueJS Interview Questionsstars1.6k

Programming Languages/Frameworks/Platforms

PHP

30+ PHP Interview Questions

DevOps

DevOps Interview Questions & Answers

Networks

Networking Interview Questions

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Android

35+ Android Interview Questions

Programming Languages/Frameworks/Platforms

Python

Top 100 Python Interview Questions from Edureka (2021)

Data Science

Top 45 Data Science Interview Questions You Must Prepare In 2021

DevOps

Linux System Administrator/DevOps Interview Questionsstars4.3k

Top DevOps Interview Questions You Must Prepare In 2021

Top 60+ DevOps Interview Questions & Answers in 2021

Database technologies

SQLite

Top 20 SQLITE Interview Questions from Career Guru

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Java

Top 50 Spring Interview Questions You Must Prepare For In 2020

Essetial Java Interview Questions

Fundamental Java Interview Questions

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Ruby on Rails

High-level Ruby on Rails Interview Questionsstars78

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NodeJS

Node.js Interview Questions in Chinese

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Android

Android cheat sheet: Coding program, Data structure, Android and Java interview questions with answers and categorized by topicsstars2k

Android Interview Questions And Answers From Beginner To Advanced

Interview Questions for Senior Android Developersstars43

Programming Languages/Frameworks/Platforms

JavaScript

70 JavaScript Interview Questions

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JavaScript

JavaScript Modern Interview Code Challenges 2021stars3.1k

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C

Top C Interview Questions and Answers

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C#

30+ C# Interview Questions

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Docker

Docker Interview Questions & Answers

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HTML

30+ HTML Interview Questions (2021)

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NodeJS

Top Nodejs Interview Questions & Answers

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Python

20 Python interview questions and answers

Data structures

What is Data Structure? | Top 40 Data Structure Interview Questions

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WordPress

Top 45 WordPress interview questions

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SharePoint

Top SharePoint Interview Questions and Answers

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Ionic

45 Ionic Interview Questions

Most Asked Ionic Interview Questions

Coding exercises

Common interview questions and puzzles solved in several languagesstars1.5k

Design Patterns

Design Patterns implemented in DotNet

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Angular

Angular Interview Questions (2020)

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JavaScript

Javascript Interview Questions and Answers (2020)

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Java

Spring Interview Questions And Answers

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iOS

iOS Static vs Dynamic Dispatch

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Swift

Dynamic keyword in Swift

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Java

Top 30 Core Java Interview Questions

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The MEGA Interview Guidestars780

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Java

A collection of Java interview questions and answers to themstars259

300 Core Java Interview Questions

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NodeJS

Node.js Interview Questions and Answers

Data Science

160+ Data Science Interview Questions

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WordPress

10 Essential WordPress Interview Questions

Algorithms

Comprehensive list of interview questions of top tech companiesstars5.9k

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Swift

Swift interview questions and answers on Swift 5 by Raywenderlich

Data Science

Top 30 data science interview questions

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Data Science Interview Questions

Design Patterns

Design Patterns implemented in Javastars75.1k

Programming Languages/Frameworks/Platforms

Android

25 Essential Android Interview Questions from Adeva

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25 Essential iOS Interview Questions from Adeva

RocketSkill App iOS Interview Questionsstars12

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Java

29 Essential Java Interview Questions from Adeva

Programming Languages/Frameworks/Platforms

JavaScript

20 Essential JavaScript Interview Questions from Adeva

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NodeJS

25 Essential Node.js Interview Questions from Adeva

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PHP

25 Essential PHP Interview Questions from Adeva

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Python

26 Essential Python Interview Questions from Adeva

Programming Languages/Frameworks/Platforms

TypeScript

Top 10 TypeScript Interview Questions and Answers for Beginner Web Developers 2019

Programming Languages/Frameworks/Platforms

ReactJS

19 Essential ReactJs Interview Questions

Programming Languages/Frameworks/Platforms

Android

RocketSkill App Android Interview Questionsstars8

Algorithms

Daily Coding Interview Practice

Programming Languages/Frameworks/Platforms

jQuery

17 Essential jQuery Interview Questions From Toptal

Top 50 jquery interview questions

Programming Languages/Frameworks/Platforms

AngularJS

100 AngularJS Interview Questions - Quick Refresher

Programming Languages/Frameworks/Platforms

C#

50 C# Coding Interview Questions and Answers

20 C# OOPS Interview Questions and Answers

Programming Languages/Frameworks/Platforms

HTML

30 HTML Interview Questions and Answers

Programming Languages/Frameworks/Platforms

Java

Java Interview Questions & Quizzes

Programming Languages/Frameworks/Platforms

JavaScript

JavaScript Interview Questions - Quick Refresher

Programming Languages/Frameworks/Platforms

NodeJS

Top 30 Node.Js Interview Questions With Answers

Programming Languages/Frameworks/Platforms

PHP

PHP Interview Questions - Quick Refresher

Programming Languages/Frameworks/Platforms

Python

100 Python Interview Questions - Quick Refresher

OS

Linux

Linux Interview Questions - Quick Refresher

Programming Languages/Frameworks/Platforms

Python

Python Interview Questions and Answers (2019)

Programming Languages/Frameworks/Platforms

Swift

Get prepared for your next iOS job interview by studying high quality LeetCode solutions in Swift 5stars1.5k

Swift Interview Questions and Answers

Database technologies

SQL

SQL Interview Questions CHEAT SHEET

Programming Languages/Frameworks/Platforms

Angular

List of 300 Angular Interview Questions and Answersstars2.6k

Programming Languages/Frameworks/Platforms

Sass

Top 10 Sass Interview Questions from educba

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iOS

Babylon iOS Interview Questions

Programming Languages/Frameworks/Platforms

JavaScript

Practice common algorithms using JavaScriptstars282

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Rust

Top 250+ Rust Programming Language Interview Questions

Rust Programming Interview Questions and Answers

rust-exam: A set of questions about the Rust programming languagestars11

Best Rust Programming Language Interview Questions and answers

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PHP

Cracking PHP Interviews Questions ebook 300+ Q&A

Programming Languages/Frameworks/Platforms

Docker

Docker Interview Questions

Top Docker Interview Questions You Must Prepare In 2019

Top Docker Interview Questions And Answers

DOCKER (SOFTWARE) INTERVIEW QUESTIONS & ANSWERS

30 Docker Interview Questions and Answers in 2019

OS

Linux

278 Test Questions and Answers for *nix System Administratorsstars9k

Coding exercises

7 Swift Coding Challenges to Practice Your Skills

Programming Languages/Frameworks/Platforms

GraphQl

8 GraphQl Interview Questions To Know

How to GraphQl - Common Questions

Blockchain

Top 55 Blockchain Interview Questions You Must Prepare In 2018

Blockchain Interview Questions

Top Blockchain Interview Questions

Blockchain Developer Interview Questions and Answers

10 Essential Blockchain Interview Questions

Top 30 Blockchain Interview Questions – For Freshers to Experienced

Most Frequently Asked Blockchain Interview Questions

Programming Languages/Frameworks/Platforms

iOS

iOS Interview Questions For Beginners

Programming Languages/Frameworks/Platforms

Objective-C

iOS Interview Questions For Beginners

OS

Linux

10 Job Interview Questions for Linux System Administrators from Linux.com

Programming Languages/Frameworks/Platforms

.NET

ASP.NET Core Interview Questions

Caching technologies

Redis

Redis Interview Questions from Javapoint

Redis Interview Questions from Wisdomjobs

Redis Interview Questions from Career Guru

Caching technologies

Memcached

Memcached Interview Questions from Javapoint

Memcached Interview Questions from Wisdomjobs

Programming Languages/Frameworks/Platforms

Python

Python interview questions. Part I. Junior

Python interview questions. Part II. Middle

Python interview questions. Part III. Senior

Programming Languages/Frameworks/Platforms

Android

20 Essential Android Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

AngularJS

12 Essential AngularJS Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

BackboneJS

8 Essential Backbonejs Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

C++

24 Essential C++ Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

C#

15 Essential C# Interview Question from Toptal

Programming Languages/Frameworks/Platforms

EmberJS

8 Essential Emberjs Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

HTML

16 Essential HTML5 Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

iOS

14 Essential iOS Interview Questions from Toptal

50 iOS Interview Questions And Answers Part 5

Programming Languages/Frameworks/Platforms

JavaScript

37 Essential JavaScript Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

NodeJS

8 Essential Nodejs Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

PHP

21 Essential PHP Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

Python

11 Essential Python Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

Ruby on Rails

9 Essential Ruby on Rails Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

Ruby

21 Essential Ruby Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

Scala

Top 25 Scala Interview Questions & Answers from Toptal

Programming Languages/Frameworks/Platforms

Swift

10 Essential Swift Interview Questions from Toptal

Database technologies

SQL

45 Essential SQL Interview Questions from Toptal

OS

Linux

11 Essential Linux Interview Questions from Toptal

Programming Languages/Frameworks/Platforms

TypeScript

Typescript Interview Questions

Programming Languages/Frameworks/Platforms

Angular

Angular 2 Interview Questions

Programming Languages/Frameworks/Platforms

Cucumber

Cucumber Web Application BDD Sample Interview Questions

Guide to building a simple Cucumber + Watir page object pattern framework

Programming Languages/Frameworks/Platforms

Angular

A list of helpful Angular related questions you can use to interview potential candidates, test yourself or completely ignorestars1k

Database technologies

MongoDB

MongoDB frequently Asked Questions by expert members with experience in MongoDB These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts

Database technologies

Postgres

PostgreSQL Interview Preparation Guide

Programming Languages/Frameworks/Platforms

PHP

26 Essential PHP Interview Questions for 2018

Programming Languages/Frameworks/Platforms

C

9 Essential C Interview Questions with answers

Programming Languages/Frameworks/Platforms

Ionic

12 Essential Ionic Interview Questions

Programming Languages/Frameworks/Platforms

Java

21 Essential Java Interview Questions

Programming Languages/Frameworks/Platforms

Ruby on Rails

Top 53 Ruby on Rails Interview Questions & Answers

10 Ruby on Rails interview questions and answers

Programming Languages/Frameworks/Platforms

iOS

iOS Interview Questions For Senior Developers

Programming Languages/Frameworks/Platforms

Ruby

Frequently Asked Ruby Interview Questions

Programming Languages/Frameworks/Platforms

Front-end build tools

Gulp js interview questions

Grunt js interview questions for beginners

Grunt js interview questions

Webpack interview questions & answersstars178

Programming Languages/Frameworks/Platforms

JavaScript

123 Essential JavaScript Interview Questionstars3.9k

Programming Languages/Frameworks/Platforms

JavaScript

10 JavaScript Concepts You Need to Know for Interviews

Programming Languages/Frameworks/Platforms

iOS

50 iOS Interview Questions And Answers Part 4

10 iOS interview questions and answers

iOS Developer and Designer Interview Questionsstars1.6k

IOS Interview Questions and Answers

Programming Languages/Frameworks/Platforms

iOS

50 iOS Interview Questions And Answers 1

50 iOS Interview Questions And Answers Part 2

50 iOS Interview Questions And Answers Part 3

Programming Languages/Frameworks/Platforms

JavaScript

The Best Frontend JavaScript Interview Questions (written by a Frontend Engineer)

Design Patterns

Design Patterns for Humans™ - An ultra-simplified explanationstars34.2k

Database technologies

Postgres

PostgreSQL Interview Q&A from CoolInterview.com

Programming Languages/Frameworks/Platforms

ReactJS

React Interview Questions

Programming Languages/Frameworks/Platforms

Python

Python Interview 10 questions from Corey Schafer

Programming Languages/Frameworks/Platforms

HTML

Common HTML interview questions for freshers

Programming Languages/Frameworks/Platforms

PHP

25 PHP Interview Questions

Programming Languages/Frameworks/Platforms

Ruby on Rails

11 Ruby on Rails Interview Practice Questions

Programming Languages/Frameworks/Platforms

ReactJS

5 Essential React.js Interview Questions

Programming Languages/Frameworks/Platforms

SharePoint

Sharepoint Interview Question For Developer

Database technologies

Oracle

General Oracle Interview Questions & Answers

Programming Languages/Frameworks/Platforms

Clojure

Interview cake Clojure solutionsstars117

Programming Languages/Frameworks/Platforms

Ruby

A list of questions about Ruby programming you can use to quiz yourselfstars38

Programming Languages/Frameworks/Platforms

Android

Collection of Android and Java questions divided by experience

Data Science

66 Job Interview Questions for Data Scientists

Programming Languages/Frameworks/Platforms

JavaScript

JS: Interview Algorithm

5 More JavaScript Interview Exercises

Interview Cake JavaScript Interview Questions

Programming Languages/Frameworks/Platforms

AngularJS

29 AngularJS Interview Questions – Can You Answer Them All? Great Article from Codementor

Programming Languages/Frameworks/Platforms

Java

37 Java Interview Questions to Practice With from Codementor

Interview Cake Java Interview Questions

Programming Languages/Frameworks/Platforms

Python

Interview Cake Python Interview Questions

Programming Languages/Frameworks/Platforms

Ruby

Interview Cake Ruby Interview Questions

Programming Languages/Frameworks/Platforms

Android

10 Android interview question answers for Freshers

Collection of Android and Java related questions and topics, including general developer questions, Java core, Data structures, Build Tools, Programming Paradigms, Core Android, Databases and etcstars839

Programming Languages/Frameworks/Platforms

AngularJS

An AngularJS exam with questions from beginner to expert by @gdi2290 from @AngularClassstars366

AngularJS Interview Questions which have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of AngularJS

This article discusses the top 50 Most occurred AngularJS interview question with answers

Top 25 Angularjs Interview Questions and Quiz

Programming Languages/Frameworks/Platforms

BackboneJS

Top 25 Backbone.js interview questions

Programming Languages/Frameworks/Platforms

C++

1000+ Multiple Choice Questions & Answers in C++ with explanations

C++ Interview Questions from GeekInterview

C++ Programming Questions and Answers related to such topics as OOPs concepts, Object and Classes, Functions, Constructors and Destructors, Inheritance and etc

Programming Languages/Frameworks/Platforms

C

C Programming Interview Questions and Answers for such topics as Bits and Bytes, Preprocessors, Functions, Strings, Language basics and etc

C Programming Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of C Programming

Programming Languages/Frameworks/Platforms

C#

Top 50 C# Interview Questions & Answers

Programming Languages/Frameworks/Platforms

.NET

300 ASPNET interview questions and answers

Programming Languages/Frameworks/Platforms

Clojure

Experience and questions from Clojure developer interview collected by Reddit users

Programming Languages/Frameworks/Platforms

CSS

Interview Questions and Exercises About CSS

Programming Languages/Frameworks/Platforms

Django

Some Django basic interview questions to establish the basic level of the candidates

Top 16 Django Interview Questions for both freshers and experienced developers

Programming Languages/Frameworks/Platforms

EmberJS

Top 25 Emberjs Interview Questions for both freshers and experienced developers

Programming Languages/Frameworks/Platforms

Golang

Top 20 GO Programming Interview Questions for both freshers and experienced developers

Programming Languages/Frameworks/Platforms

HTML

10 Typical HTML Interview Exercises from SitePoint.com

HTML interview questions and answers for freshers and experienced candidates Also find HTML online practice tests to fight written tests and certification exams on HTML

Top 50 HTML Interview Questions for both freshers and experienced developers

Programming Languages/Frameworks/Platforms

iOS

20 iOS Developer Interview Questions and Answers for getting you ready for your interview

A small guide to help those looking to hire a developer or designer for iOS work While tailored for iOS, many questions could be used for Android developers or designers as well A great self-test if you're looking to keep current or practice for your own interviewstars1.6k

iOS Interview Questions and Answers including such topics as Development Basics, App states and multitasking, App states, Core app objects

Programming Languages/Frameworks/Platforms

Java

Top 25 Most Frequently Asked Interview Core Java Interview Questions And Answers

Programming Languages/Frameworks/Platforms

JavaScript

5 Typical JavaScript Interview Exercises

JS: Basics and Tricky Questions

Some basic javascript coding challenges and interview questionsstars4k

Some JavaScript interview exercisesstars60

Top 85 JavaScript Interview Questions

Programming Languages/Frameworks/Platforms

KnockoutJS

20 questions you might be asked about KnockoutJS in an interview for both freshers and experienced developers

Programming Languages/Frameworks/Platforms

Lisp

Top 18 Lisp Interview Questions from Career Guru

Programming Languages/Frameworks/Platforms

Python

A listing of questions that could potentially be asked for a python job listingstars171

Python interview questions collected by Reddit users

Top 25 Python Interview Questions from Career Guru

Programming Languages/Frameworks/Platforms

Ruby on Rails

20 Ruby on Rails interview questions and answers from CareerRide.com

Programming Languages/Frameworks/Platforms

ReactJS

Reddit users share their expectations from ReactJS interview

Programming Languages/Frameworks/Platforms

Ruby

The Art of Ruby Technical Interview

Programming Languages/Frameworks/Platforms

Scala

4 Interview Questions for Scala Developers

Database technologies

MongoDB

MongoDB Interview Questions that have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of MongoDB

Database technologies

MySQL

10 MySQL Database Interview Questions for Beginners and Intermediates

40 Basic MySQL Interview Questions with Answers

Top 50 MySQL Interview Questions & Answers from Career Guru

Database technologies

Postgres

13 PostgreSQL Interview Q&A

Database technologies

SQL

10 Frequently asked SQL Query Interview Questions

SQL Interview Questions that have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of SQL

OS

Linux

11 Basic Linux Interview Questions and Answers

Top 50 Linux Interview Questions from Career Guru

OS

Windows

Top 10 Interview Questions for Windows Administrators

Algorithms

Top 10 Algorithms for Coding Interview

Top 15 Data Structures and Algorithm Interview Questions for Java programmer

Coding exercises

Interactive, test-driven Python coding challenges (algorithms and data structures) typically found in coding interviews or coding competitionsstars25.5k

Interview questions solved in pythonstars111

Comprehensive lists

Some simple questions to interview potential backend candidatesstars237

Security

101 IT Security Interview Questions

How to prepare for an information security job interview?

Data Science

Data Science Interview Questions for Top Tech Companies

Programming Languages/Frameworks/Platforms

JavaScript

Ten Questions I've Been Asked, Most More Than Once, Over Six Technical JavaScript / Front-End Engineer Job Interviews.

10 Interview Questions Every JavaScript Developer Should Know

21 Essential JavaScript Interview Questions from best mentors all over the world

Development hiring managers and potential interviewees may find these sample JavaScript proficiency interview Q&As and code snippets useful

JavaScript Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of JavaScript

Programming Languages/Frameworks/Platforms

Python

Python Frequently Asked Questions (Programming)

Interview Questions for both beginners and experts

Programming Languages/Frameworks/Platforms

AngularJS

AngularJS interview questions and answers for experienced developers

Programming Languages/Frameworks/Platforms

BackboneJS

Backbonejs Interview Questions And Answers from web technology experts notes

Programming Languages/Frameworks/Platforms

C++

200 C++ interview questions and answers

C++ Programming Q&A and quizzes from computer science portal for geeks

LeetCode Problems' Solutions written in C++stars16k

Programming Languages/Frameworks/Platforms

C

Basic C language technical frequently asked interview questions and answers It includes data structures, pointers interview questions and answers for experienced

First set of commonly asked C programming interview questions from computer science portal for geeks

Second set of commonly asked C programming interview questions from computer science portal for geeks

Programming Languages/Frameworks/Platforms

C#

C# interview questions from dotnetfunda.com

Programming Languages/Frameworks/Platforms

.NET

Great list of NET interview questions covering all the NET platform topics

NET Interview Questions and Answers for Beginners which consists of the most frequently asked questions in NET This list of 100+ questions and answers gauge your familiarity with the NET platform

Questions gathered by community of the StackOverflow

What Great NET Developers Ought To Know (More NET Interview Questions)

Programming Languages/Frameworks/Platforms

Clojure

Classic 'Fizz Buzz' interview question for Clojure developers

Clojure Interview Questions for experienced devs

Coding exercises in Clojure, handy practice for technical interview questionsstars6

Programming Languages/Frameworks/Platforms

CSS

CSS interview questions and answers for freshers and experienced candidates Also there you can find CSS online practice tests to fight written tests and certification exams on CSS

Development hiring managers and potential interviewees may find there sample CSS proficiency interview Q&As and code snippets useful

Top 50 CSS(Cascading Style Sheet) Interview Questions covering the most of tricky CSS moments

Programming Languages/Frameworks/Platforms

Django

Some abstract interview questions for Python/Django developers

Programming Languages/Frameworks/Platforms

Erlang

Top 22 Erlang Interview Questions for both freshers and experienced developers

Programming Languages/Frameworks/Platforms

Golang

Solutions for Elements of Programming Interviews problems written in Golangstars443

Solutions for some basic coding interview tasks written in Gostars75

Programming Languages/Frameworks/Platforms

HTML

40 important HTML 5 Interview questions with answers

Programming Languages/Frameworks/Platforms

Ionic

23 Beginner Level Ionic Framework Questions

Programming Languages/Frameworks/Platforms

iOS

All you need to know about iOS technical interview including some tips for preparing, questions and some coding exercises

Interview Questions for iOS and Mac Developers from the CEO of Black Pixel

Programming Languages/Frameworks/Platforms

Java

115 Java Interview Questions and Answers – The ULTIMATE List

Data Structures and Algorithms in Java which can be useful in interview processstars431

Java Interview Questions: How to crack the TOP 15 questions

Top 10 Tricky Java interview questions and Answers

Top 40 Core Java Interview Questions Answers from Telephonic Round

Programming Languages/Frameworks/Platforms

KnockoutJS

15 interview questions from CodeSample.com

Programming Languages/Frameworks/Platforms

Less

Top 25 LESS Interview Questions

Programming Languages/Frameworks/Platforms

Lisp

10 LISP Questions & Answers

Programming Languages/Frameworks/Platforms

NodeJS

Node.JS Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of Node.JS

Top 25 Nodejs Interview Questions & Answers from Career Guru

Programming Languages/Frameworks/Platforms

Objective-C

Interview Qs for Objective-C and Swift

Programming Languages/Frameworks/Platforms

PHP

100 PHP interview questions and answers from CareerRide.com

20 Common PHP Job Interview Questions and Answers

PHP interview questions and answers for freshers

Top 100 PHP Interview Questions & Answers from CareerGuru

Programming Languages/Frameworks/Platforms

Ruby on Rails

Ruby And Ruby On Rails interview Q&A

Some of the most frequently asked Ruby on Rails questions and how to answer them confidently

Programming Languages/Frameworks/Platforms

Ruby

15 Questions to Ask During a Ruby Interview

Programming Languages/Frameworks/Platforms

Sass

Top 17 Sass Interview Questions from Career Guru

Programming Languages/Frameworks/Platforms

Scala

A list of Frequently Asked Questions and their answers, sorted by category

A list of helpful Scala related questions you can use to interview potential candidatesstars370

How Scala Developers Are Being Interviewed

Programming Languages/Frameworks/Platforms

Shell

Top 50 Shell Scripting Interview Questions from Career Guru

Programming Languages/Frameworks/Platforms

Swift

Swift Programming Language Interview Questions And Answers from mycodetips.com

Your top 10 Swift questions answered

Database technologies

Cassandra

Top 23 Cassandra Interview Questions from Career Guru

Database technologies

Microsoft Access

Top 16 Microsoft Access Database Interview Questions from Career Guru

Database technologies

MongoDB

28 MongoDB NoSQL Database Interview Questions and Answers

MongoDB Interview Questions from JavaTPointcom

Top 20 MongoDB interview questions from Career Guru

Database technologies

MySQL

100 MySQL interview questions

15 Basic MySQL Interview Questions for Database Administrators

28 MySQL interview questions from JavaTPoint.com

Database technologies

Neo4j

Top 20 Neo4j Interview Questions from Career Guru

Database technologies

Postgres

Frequently Asked Basic PostgreSQL Interview Questions and Answers

Database technologies

SQL

Common Interview Questions and Answers

General Interview Questions and Answers

Schema, Questions & Solutions for SQL Exercisingstars993

OS

Linux

10 Useful Random Linux Interview Questions and Answers

Top 30 Linux System Admin Interview Questions & Answers

OS

Windows

Top 22 Windows Server Interview Questions from Career Guru

Windows Admin Interview Questions & Answers

Algorithms

A great list of Java interview questions

Algorithms playground for common interview questions written in Rubystars3.2k

EKAlgorithms contains some well known CS algorithms & data structuresstars2.4k

Comprehensive lists

A list of helpful front-end related questions you can use to interview potential candidates, test yourself or completely ignorestars53.2k

Front End Developer Interview Questions

Design Patterns

Design Pattern Interview Questions that have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of Design Pattern

Data structures

Top 15 Data Structures and Algorithm Interview Questions for Java programmer

Top 50 Data Structure Interview Questions from Career Guru

Networks

Top 100 Networking Interview Questions & Answers from Career Guru

Security

Information Security Interview Questions from Daniel Miessler

Top 50 Information Security Interview Questions for freshers and experts

Programming Languages/Frameworks/Platforms

Android

A couple of Android questions posted by Quora users

A great list of Android interview questions covering all the aspects of this career