Top 20 Full Stack Developer Interview Questions and Answers

Full-Stack Developer Training

With the rapid pace technology is expanding, it has become imperative for businesses to employ professionals with a command over multiple programming languages. A full-stack developer is one such professional, experiencing an extensive demand across the tech industry- all thanks to their diverse skill set and efficiency.

Perceiving the rapidly evolving tech advancements across the globe, there has now grown a substantial demand for skilled full-stack developers. As the U.S. Bureau of Labor Statistics states, job prospects for full-stack developers are expected to rise by 16% from 2022 to 2032, reflecting an optimistic future for aspiring developers in the industry. 

If you wish to become a full stack developer and explore this dynamic landscape, interview preparation is vital to maximise your recruitment chances. It's crucial to keep up with the most recent trends, including data structures and algorithms and upskill frequently to stay relevant and enhance marketability. Follow this blog for more insights into acing your full-stack developer interview.

Top 20 Full-Stack Developer Interview Questions

Here are the top 20 interview questions and answers you should master to ace your upcoming full-stack developer interview.

  • What does a full-stack developer do?

A full-stack developer is a professional efficient in handling both front-end and back-end coding.

  • What talents are significantly required for a full-stack developer?

To become a proficient full-stack developer, knowledge of front-end technologies such as HTML, CSS, and JavaScript, as well as details into the intricacies of back-end technologies, encompassing databases, server-side languages, and APIs, is required.

  • What perks include employing a full-stack developer?

A full-stack developer's front-end and back-end programming skills can be valuable for businesses, leading to cost and time savings. This benefit becomes especially significant considering the costs and time associated with hiring individual front-end and back-end developers.

  • Which tools do full-stack developers frequently use in their work?

Some of the tools frequently used by full-stack developers include Node.Js, AngularJS, React, and MongoDB.

  • How does pair programming operate?

Pair programming functions as two programmers operating on the same script, creating and examining the code.

  • Can you list some contrasts between front-end and back-end development?

Front-end development involves crafting a website or application's user interface, whereas back-end development involves creating server-side code and managing databases.

  • What makes a framework different from a library?

A framework comprises a pre-written set of code that extends a structure for building applications, whereas a library refers to a pre-written code collection used to perform specific tasks.

  • What Is RESTful API?

A RESTful API is a building paradigm for designing internet services that leverage HTTP requests to access and modify statistics.

  • What distinguishes the HTTP PUT and POST techniques?

The PUT method updates a useful resource, while the POST method generates a new one.

  • How do SQL databases differ from NoSQL databases?

SQL databases are relational and have a fixed schema, meaning data is organised into structured tables with predefined relationships. They use the structured query language (SQL) for querying. 

On the other hand, NoSQL databases use various data models (e.g., document-based, key-value, column-family) and have flexible or schema-less designs. They often prioritise horizontal scalability and can handle unstructured or rapidly changing data. SQL databases prioritise strong consistency and ACID transactions, while NoSQL databases may offer various levels of consistency and prioritise performance and scalability. 

  • What divides the Agile and Waterfall methods?

Agile software program development is a technique that enables cooperation, and Waterfall software program development places better precedence on planning and documentation.

  • How do SVN and Git differ from one another?

Git is a worldwide version control gadget that enables builders to work on the same file simultaneously. SVN is a controlled model device that forces developers to work on specified tasks.

  • What distinguishes HTTP and HTTPS from one another?

HTTP is a means for moving data over the net, while HTTPS is a private variant of HTTP that employs encryption to secure data.

  • What differentiates a session from a cookie?

A session maintains a user's interest on an internet site, while a cookie is a small quantity of information retained on a PC that is the client-side.

  • What divides classes and objects from one another?

A class is a blueprint for generating things, while an object is an example of that particular class.

  • What distinguishes a simple internet site from a dynamic one?

A simple internet site gives the same records to each consumer. However, a dynamic internet site allows you to convert content depending on the consumer's choices.

  • What distinguishes GET searches from POST requests?

A GET request obtains statistics from a server, while a POST request supplies data to a server.

  • What makes a stack different from a queue?

A stack primarily operates on the Last-In-First-Out (LIFO) principle, while on the other hand, a queue typically follows the First-In-First-Out (FIFO) principle, highlighting a significant difference between these two.

  • What makes a binary seek tree distinct from a hash table?

Compared to a hash table, which applies a hash function to map keys to values, a binary seek tree uses a binary tree to keep objects in a distinct order.

  • Distinguish a processor from an interpreter.

A processor transforms source code into gadget code while an interpreter executes supply code simultaneously.


Properly preparing for a full-stack developer interview is crucial for increasing your chances of getting hired and showcasing your skills and knowledge to the interviewer. Enrolling in an online course can be a valuable step to solidify your grasp of full-stack development fundamentals and get ready for the interview phase.


Imarticus Learning offers a Full Stack Developer Pro course that prepares individuals for a career as a full-stack web developer. The course is 6 months long and includes technical understanding of front-end and back-end programming, including data structures and algorithms

Enrol now and start a career as a full-stack web developer.

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