Top 10 Questions Asked in a Full-Stack Developer Interview

Full-stack development means working on both the user-facing and the server-side parts of a web application/website simultaneously. This process has three layers:

1. Presentation layer (the frontend part that creates the user experience)
2. Business logic layer (the backend part that runs on the server and handles the application logic)
3. Database layer (the part that stores and manages the data)

A person who can develop both the user interface (UI) and the server-side logic of a web application is called a Full Stack Web Developer. They have skills in CSS and HTML, as well as in programming languages that run on browsers, databases, and servers.

Some well-known full-stack development tools are:

1. Backbone
2. WebStorm
3. Visual Studio Code
4. Slack
5. TypeScript
6. Electron
7. GitHub
8. CodePen

1. Basic languages – HTML, CSS, and SQL.
2. Front-end frameworks – BootStrap, AngularJS, VueJS, ReactJS, JavaScript, TypeScript, Python, Ruby, and PHP to create dynamic and interactive web pages.
3. Back-end frameworks – Express, Django, NodeJS, and Ruby on Rails to handle the server-side logic and communication of the web application.
4. Databases – Different types of databases like MySQL, SQLite, Postgres, MongoDB, Cassandra, Apache Storm, and Sphinx to store and retrieve the data for the web application.
5. Additional skills recommended – Git, Machine Learning, SSH, Linux Command, Data Structures, and Character encoding to enhance performance and efficiency.

Pair Programming is a technique where two programmers work together on the same code using one workstation. The “driver” is the one who types the code on the keyboard, while the “navigator” is the one who checks the code for errors, typos, and readability. They also switch their roles every few minutes to share the work.

CORS is a method that uses extra HTTP headers to let browsers allow a web application from one origin to access different web resources from other domains. Web scripts can use CORS to request a resource that has a different origin (protocol, domain, or port) than its own.

IoC is a general term that software developers use to describe a pattern that helps separate components and layers in the system. It is mainly used with object-oriented programming. IoC means that objects or parts of a program are controlled by a framework or container instead of the objects themselves. IoC can be done using different methods such as service locator patterns, strategy design patterns, factory patterns, and dependency injection.

Dependency Injection is a design pattern that implements IoC. It means that the container connects objects with other objects instead of the objects doing it themselves. It involves three kinds of classes.

Client class: This is the class that needs the service class.
Service class: This is the class that provides the service to the client class.
Injector class: This is the class that creates and injects the service class objects into the client class.

CI is a practice where developers regularly merge code into a common repository to find issues early. CI process uses automatic tools that check the quality of new code before merging. Every check-in is verified by automated builds and tests.

Multithreading is a technique that allows multiple threads of execution to run at the same time for optimal use of the CPU. It enables multiple threads to have their execution paths within a process, but share the resources of that process.

While introducing yourself, you should simply summarize who you are, name your strengths (years of experience, knowledge of programming languages, two or three principal personality traits) and give them something positive to work with for the rest of the interview.

There are three stages of the full stack developer interview which are Introduction, Pair Programming and Q&A rounds.

The main responsibility of a Full Stack Developer includes designing user interactions on websites, developing servers and databases for website functionality and coding for mobile platforms.