Web Developer Interview Questions

BrainStation’s Web Developer career guide is intended to help you take the first steps toward a lucrative career in web development. Prepare for a Web Developer job interview with this list of common interview questions.

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When hiring a new Web Developer, employers are seeking candidates who have the right qualifications, personality, and enthusiasm to thrive in the position.

In a Web Developer interview, you can expect questions that assess both your technical and soft skills. For the technical portion, your Web Developer knowledge and skills will be put to the test. Employers may ask questions you can answer verbally, or you may be required to complete a whiteboard or coding problem.

In whiteboard challenges during a Web Developer interview, you will be given a code problem or task and asked to work out the problem and explain your solution.

In order to assess important soft skills, such as communication and time management, employers may ask behavioral questions, where you have to recount specific examples from your past experiences. It is important that you practice answering both technical and behavioral interview questions.

To help you prepare, we have put together a list of common Web Developer interview questions.

To test your Web Developer knowledge, employers may ask questions about HTML, CSS, JavaScript, SQL, Python, jQuery, and other programming languages, as well as questions about other web development tools and processes.

Some examples of web development interview questions and answers include:

Question: What is the job role of a Web Developer? In your opinion, what are the most important aspects of web development jobs and why?

Answer: The specific role of a Web Developer will vary greatly depending on the specific job description, and whether or not a hiring manager is looking for back-end specialists or front-end web developers.

Ultimately, though, most Web Developer roles will span the following responsibilities:

  • Working directly with clients or company stakeholders to understand their needs and requirements
  • Designing, developing, programming, testing, upgrading, and debugging web applications
  • Collaborating with designers, other developers, UX specialists, sales and marketing teams, and other stakeholders to design, develop, and deploy major web projects
  • Support the maintenance of websites, web applications, and other web products Those are just the most general routine web development tasks, but to get more specific, refer back to the job description and make sure your answer covers the major responsibilities and competencies demanded by the position.

Question: How are your coding skills? Please tell us which programming languages are you familiar with?

Answer: The hiring manager here wants to make sure that you have experience with a breadth of different programming languages and, most importantly, that you’re adept with whichever coding language used by that company.

To answer this web developer interview question, it is once again important to review the job description and prioritize whichever coding languages are demanded.

Be honest if you’re more familiar with certain languages than others – for instance, perhaps you have used HTML, CSS, PHP, and JavaScript extensively in your current position, but you have only scratched the surface with Ruby or SQL. It is also a smart idea to give the hiring manager an idea of the specific applications you have for each programming language.

Common Web Development Interview Questions

How do you differentiate between ID and Class selector?
What is the difference between undefined value and null value?
What are the differences between HTML and XHTML?
How do you differentiate between responsive design and adaptive design?
How do you define progressive rendering in HTML?
Can you explain the distinction between span and div tag in HTML5?
Please help us understand quirks, full standards, and almost standards mode.
How do you differentiate between ES5 and ES6?
How do you organize your assets and class modules?
How would you help non-technical stakeholders understand APIs?
How do you differentiate between black box and white box testing?
Looking to the future of web development, what do you think will be the biggest trends?
What are the biggest differences between mobile and desktop development?
Please explain push technology. What are its benefits and drawbacks?

You should also be able to define and explain a number of terms, including:

  • ETag

  • CSS Selectors

  • HTML5 Web Storage

  • Big-O Notation

  • Page Visibility API

  • Type Coercion

Common Technical Web Developer Interview Questions

Technical interview questions put your web development knowledge to the test. In these questions, you need to explain how you would apply your skills for various problems or tasks.

For technical interview questions, it’s important to clearly articulate your thinking and process.

Any real-world examples you can provide illustrating how you applied these skills will really make your answers resonate with hiring managers.

A few examples of technical Web Developer interview questions include:

Question: What are the advantages of HTTP 2.0 over HTTP 1.1?

Answer: This technical question is meant to test your overall knowledge, explore your experience level with both HTTP 2.0 and HTTP 1.1, and ensure you have the communication skills that a good Web Developer needs.

In other words, it is important to provide a concise and easy-to-understand answer. HTTP 2.0 improves search engine rankings, consumes less broadband, and offers better loading speeds.

Question: As a Web Developer, what steps do you take to optimize your site’s loading time?

Answer: There are many different ways you can reduce the page load time:

  • Cleaning the web code
  • Minimizing redirects
  • Caching
  • Choosing smaller images or reducing image size
  • Removing extraneous widgets
  • Reducing lookups

Explain to the hiring manager how you then check the speed (perhaps using Google PageSpeed Insights) to verify the success of your actions, or to see if further effort is needed.

Additional Technical Interview Questions for Web Developers

When you create a web page or web application, what is your workflow and process?
What specific coding languages do you work with?
What web development tools do you use?
In a hypothetical scenario, you have five different style sheets. What is your approach to best integrate them into the site?
How do you organize your JavaScript code?
What is your time management approach during a development cycle? How do you approach estimating how long specific web development tasks will take?
When you’re building a web application, how do you take into account SEO, maintainability, UX design, performance, and security?
How do you approach web accessibility? How do you make sure your websites and applications are accessible to users?
Please guide me through the process of creating a web page from scratch.
When you’re looking at other people’s code, how do you test for bugs?
When you’re building a website or online application, what user interface and security principles do you consider?
Please provide an example of a website or web application that you don’t like. What would you change to improve it?

Common Personal Web Developer Interview Questions

A Web Developer often has to collaborate with other departments, so employers are seeking candidates that would be a good overall fit with the company.

Personal questions can reveal a lot about a job candidate outside of their technical qualifications.

Personal interview questions for a Web Developer may include:

Question: What is your approach for keeping on top of web development industry news and trends? How do you apply this to your work?

Answer: You need to show your interviewer that you are passionate about the development industry and determined to stay on top of the latest trends. Try to provide a diverse list of specific web development blogs and vlogs, social-media influencers, YouTube channels, and more.

Jeff Atwood, Jeffrey Zeldman, Brad Frost, Sara Soueidan, and Rachel Andrew are a few popular senior developers on social media!

You could bring up an interesting article or webinar you saw recently. It is also worth mentioning if you have a circle of colleagues or professional contacts who enjoy sharing interesting development-related content.

Additional Personal Web Development Interview Questions

Tell me about yourself.
How would you describe your preferred development environment?
Please tell us about the projects you’re working on (or have worked on) in your spare time.
Where do you see your web development career in five years?
What are your interests outside of web and software development?
What kind of team environment do you feel helps you thrive?
Why did you decide to pursue coding? Why are you interested in a Web Developer career?
What are your favorite types of projects to work on?
Are there any specific projects at our company that you are excited about?

Common Situational Web Developer Interview Questions

At any stage of your Web Developer career, leadership and communication skills are two important qualities to have. These skills will also help you take on more responsibility and begin to start managing teams of other developers.

To assess your leadership and communication abilities, employers may ask questions such as:

Question: Please explain JavaScript to me in a way that even someone with no coding experience could understand.

Answer: JavaScript is a programming language that is used for dynamic content, which refers to animations, graphics, newsfeeds, slideshows, autocomplete suggestions, interactive forms, or anything else on a web page that changes, moves, or shifts without the user hitting refresh.

JavaScript is also essential for developing mobile applications, creating browser-based games, and working on a website’s back end. JavaScript is so widely used that major web browsers can render JavaScript without downloading any additional programs or compilers.

Additional Situational Interview Questions for Web Developers

Can you recall a time when you solved a problem that didn’t involve coding?
How would the Web Developers and Project Managers you have worked with describe you and your working style?
How do you communicate your progress to clients and/or stakeholders?
Give me an example of how you would describe and define web development to someone who is completely new to tech.
When you’re coding, do you enjoy working as part of a team? What do you think contributes to a successful team?
How do you help your team members improve their coding skills?

Common Behavioral Web Developer Interview Questions

With behavioral interview questions, employers are seeking to understand how your past behavior may translate into the current position. Focus on explaining the situation or problem, how you handled it, and the result or outcome of your actions.

To assess your behavioral skills, employers may ask questions such as:

Question: Please tell me about a time you received negative feedback. How did you respond?

Answer: Even an entry-level Web Developer has likely faced criticism at some point. The hiring manager will be looking to see that you have the communication skills and service-oriented attitude to respond in a professional manner to negative criticism and ultimately use it to improve the quality of your work.

Still, you should not choose an example where a client was unhappy simply because of poor work.

A good example would be a time when a client or stakeholder was not pleased with a web application or product even though it was developed according to an agreed-upon plan.

If you can then describe how you pivoted from your original plan to create something that everyone was happy with, it will show that you are adaptable and devoted to customer service.

More Behavioral Interview Questions for Web Developers

Tell me about a project you’re particularly proud of. What did you do that worked out well?
Tell me about a project that did not turn out the way you would have wanted. What would you change?
Tell me about a time when you got stuck while coding. How did you work your way through the problem?
Describe a time when your program didn’t run. How did you troubleshoot your code?
Have you ever failed to meet a deadline? What went wrong? How did you rectify the situation?
What is your approach for conflict management on your team?

Web Developer Interview Questions From Top Companies

To give you an idea of the range of questions that may come up during your interview, we have put together a few examples of Web Developer interview questions from some of the top tech companies.

How would you implement integer division if your language did not offer it?
Vertically and horizontally center an element on the screen using CSS.
Implement a SortedMap in JavaScript.
How would you make your web pages load fast?
Write a JavaScript function that creates HTML based on a given input dataset.
Outline how you would implement a simple tic tac toe game in a programming language of your choice.
How would you reverse a linked list?
Design a webpage, which can auto-post new posts when you reach the bottom of the page by using JavaScript.
Write the code to find the balance point of the array.


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