Top 14 Full Stack Web Developer Interview Question and Answers

As Full-stack web developers have the ability to code both the frontend and backend of an application, they are considered the jack of all trades. You can imagine, these kinds of developers are valuable and high in demand because of their versatility and flexibility to work in any domain because of their ability to work on and understand most of the stages of the software development cycle. 

Full-stack web developers are one of the highest-paid and most sought-after professionals today.

With high salaries and bright career prospects, landing a job as a full-stack web developer isn’t easy, and your interview performance is critical. So in this blog, we will be covering the full-stack web developer interview questions along with the best ways to answer them. 

Once you go through these interview questions and answers, you will have the high probability of cracking the interview. 

#1 Introduce Yourself.

To ease you and check your communication skills, Recruiters often start with asking about you. Here the important thing is to notice what career aspect you are going to highlight here. 

Here you need to give recruiters an idea of your past experience. Talk about what you studied in college, any full-stack web development courses you’ve taken, and your previous roles. 

Later explain why you’re interested in this job. Research well about the company, their vision and explain how you can bring value to the organization, and how the role can help you achieve your professional goals.

#2 What are some full stack web development tools that you have worked with

Talk about your experience and expertise of any of these tools. Stack developer tools form an integral part of full stack developer interview questions. Some popular and efficient stack developer tools are:

WebStorm

Visual Studio Code

Backbone

Slack

Electron

TypeScript

GitHub

CodePen

#3 What are the latest trends in Full Stack Web Development?

You might get a few questions on the trends in the field. If you are applying for full stack development, you should read and understand about:

Evolution of more compatible extensions

Rise of Vue JS Functional, real-time web apps, mobile web development, and progressive apps.

Programming with improvement in JavaScript.

#4. Explain DevOps

You can also expect questions related to other DevOps tools during a full stack web developer interview.

You can answer it smartly by mentioning that DevOps is a technique that emphasizes the coordination and communication of both software developers and other IT professionals. DevOps aims to deliver software products faster and decrease release failure rates. 

You can also expect questions specific to other tools during your Full Stack Developer Interview.  

#5. Explain Pair Programming

When it comes to full stack developer interviews, pair programming is a critical topic, and you can expect many questions related to it.

Pair Programming involves two developers working on the same terminal. One of the developers who is responsible for writing the codes is called the driver, and the other whose task is to review the codes is the navigator. It works for both frontend and backend.

#6 What do you mean by data attributes?

You need to be well versed with HTML if you are looking for a job in Full Stack Web Development.

This question is from HTML5

Data Attributes are custom attributes that are used when the existing properties are not suitable for usage. These are universal attributes that you can apply in any element.

#7 Explain multithreading and continuous integration.

These are quite common questions at full stack developer interviews.

Multithreading is the process of improving the performance of the CPU. Multiple users can manage it simultaneously. It is when the operating system duly supports the execution of multiple processes. 

Continuous integration is the execution of specially designed codes that are automated for testing. It helps the developers to implement the codes during the production time. It aids in detecting errors faster and resolving them easily. 

#8 Explain Long Polling.

Long Polling is a pattern in web development that the developers use to push the data from the server towards the client. Long Polling allows the client to request information from the server. 

During your full stack developer interview, you can also expect questions like “what’s the difference between Long Polling with WebSockets?”

#9 What is CORS

CORS stands for Cross-Origin Resource Sharing. It helps in the Integration and execution of web scripts with the external content of the indigenous domain.

#10 How can we enhance the scalability and efficiency of a website?

This is one crucial full stack developer interview question. The best ways to enhance scalability and efficiency are:

Reducing DNS lookup

Avoiding duplicate codes

Avoiding URL redirects

Leveraging browser caching

Avoiding unnecessary images

Deferring parsing of JavaScript

Placing all assets on a cookie-free domain, preferably using a CDN.

And more ..

#11 What are the types of design patterns?

A design pattern is a reusable solution for frequent problems in software design. Such patterns show the interactions between classes and objects. There are three main types of design patterns:

Creational: Related to class instantiation and object creation. 

Structural: Related to the organization of different classes and objects to provide new and more extensive functionality.

Behavioral: Concerned with identifying common communication patterns between objects.

#12 How can you enhance your website load time and performance?

This full stack developer interview question is vital for your tech interview prep. Different possible ways to optimize your website for the best performance are:

  • Optimize files and compress images
  • Optimize caches
  • Minimize HTTP requests.
  • Browser caching. 
  • Utilize CDNs and remove unused files/scripts.
  • Apply CSS3 and HTML5..

Minify JavaScript and Style Sheets.

#13 Which is your favorite language and why?

Full Stack Web Developers work with many languages in the front end and back end.  Ideally, a candidate must have a few languages that he loves, preferably, some with which he can design and demonstrate very well in the front end and others with which he can take care of the back end. The basics are HTML, CSS, Python & more.

#14 Give an example of a project that you have worked on?

The recruiter might ask you this question to understand the methodology of the full stack web development project and also gives an idea of his sharpness and precision in choosing the right toolset. Your answer needs to be specific and in depth to show a balance between your ability to develop both on the front-end and the back-end of the web application. 

With continuous advancement in the tech driven world, the need for full stack web developers is on rise. Multinational companies and employers are now seeking trained full stack web developers for their company.

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Full stack web developers can earn an annual average of USD 112,727, according to Glassdoor. Check out LearnQoch Full Stack Web Development training program and get started on a challenging new career today!

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