Web Developer Interview: Prep for Your First Junior Role

To prepare for a junior web developer interview, practise explaining how you build, test, and improve a website—not just naming technologies. Choose one project, review its code, and rehearse clear answers about your decisions, challenges, and next steps.

• Use your own projects to show how you solve real problems.
• Review HTML, CSS, JavaScript, Git, and basic browser debugging.
• Practise thinking aloud when you do not know an answer.
• Ask questions about the team, tasks, and feedback process.

What junior web developer interviews look for

A junior interview usually checks whether you understand the basics and can learn on the job. Employers may ask about your projects, discuss core web concepts, or give you a small coding task. The exact format varies by company, so read the job description and prepare for the skills it names.

You do not need to know every framework or tool. You should be able to explain what you have built, how you approached a problem, and where you would look for help. Clear reasoning is often more useful than trying to sound advanced.

If you are still shaping your learning plan, compare this interview preparation with a broader web developer roadmap and practical starter guide. Focus on the skills that appear in the roles you want.

Review core web skills before the interview

Start with the foundations. Be ready to describe HTML as the structure of a page, CSS as its presentation, and JavaScript as a way to add behavior. Practise explaining these ideas in plain language, then show them in a project.

HTML, CSS, and responsive layouts

Review semantic HTML: choose elements for their meaning, such as headings for sections and buttons for actions. Know how CSS selectors, the box model, and basic layout methods affect a page. Be prepared to explain how you make a layout usable on both small and large screens.

Accessibility basics matter, too. For example, form controls need labels, images that convey meaning need useful alternative text, and interactive controls should work with a keyboard. These are practical habits, not extra polish.

JavaScript and browser tools

Practise reading simple JavaScript that uses variables, functions, conditions, arrays, and objects. You may also need to describe how an event handler responds to a click or how you would find a broken interaction.

Know how to use browser developer tools to inspect an element, view a console error, and check a network request. If you have used a framework, explain the problem it helped you solve instead of listing features you have not used.

MDN’s Learn web development offers structured learning resources and skill checks. Use it to identify gaps, then practise by changing code and explaining the result.

Choose one project and prepare to explain it

Pick a project you can discuss in detail. It can be a class exercise, a personal site, or a small application. A polished, honest explanation of one project is stronger than a long list of work you barely remember.

Prepare a short walkthrough: what the project does, who it helps, what you built, and what you would improve. Be specific. Instead of saying, “I made a website,” explain that you built a responsive service page with a contact form and tested it on different screen sizes.

Use a simple project story

1. Goal: What did you want the project to do?
2. Your role: Which parts did you build yourself?
3. Challenge: What went wrong or took extra thought?
4. Action: How did you investigate and fix it?
5. Result: What works now, and what would you improve next?

Be clear about team contributions and borrowed code. If you used a tutorial, say what you changed and what you learned. Interviewers may ask follow-up questions, so avoid claiming work you cannot explain.

Practise common interview questions

Rehearse answers aloud, but do not memorise a script. Short, structured answers sound more natural and leave room for follow-up questions.

Questions about your work and process

• “Tell me about a project.” Give the goal, your contribution, one challenge, and the outcome.
• “How do you debug a problem?” Explain how you reproduce it, inspect errors, isolate the cause, test a fix, and check that related behavior still works.
• “What would you improve?” Name a real next step, such as adding keyboard testing or improving mobile spacing.
• “What do you do when you are stuck?” Describe how you make the issue smaller, consult reliable documentation, and ask a focused question after trying a reasonable approach.

For technical questions, explain your reasoning as you work. If you do not know an answer, say what you know, describe how you would investigate, and ask a clarifying question. Guessing confidently can make a small knowledge gap look like a larger problem.

Prepare your code and portfolio links

Before the meeting, open every link you plan to share. Check that your project runs, the repository is accessible, and the main page works on a phone-sized screen. Fix obvious errors and remove secrets such as API keys from public code.

Make the README useful. Include what the project does, the main tools used, how to run it, and any known limitations. Keep your code readable enough that you can find the parts you may need to discuss.

If you are deciding which work to show, use the guidance in Web Developer Portfolio: Projects That Prove Your Skills as a companion. You can also review browser developer tools before describing how you debug.

Plan the interview day and ask useful questions

Confirm the time zone, meeting format, and any instructions for a coding task. For an online interview, test your camera, microphone, connection, and screen sharing beforehand. Keep your notes and project links easy to reach.

For an in-person meeting, plan your route and bring anything the recruiter requested. In either format, have a brief introduction ready: what you are learning, what you have built, and what kind of role you are seeking.

Prepare a few questions for the interviewer. Ask what a junior developer might work on in the first few months, how code reviews work, and how the team supports learning. These questions help you understand the role and show that you care about the day-to-day work.

After the interview, write down questions you found difficult and topics to review. If appropriate, send a short thank-you message. Treat each interview as practice, whether or not it leads to an offer.

Frequently asked questions

Do I need a computer science degree to interview for a junior web developer job?

Requirements vary by employer. Read each job post carefully and be ready to demonstrate relevant skills through projects, coursework, or work experience.

How many projects should I show?

There is no fixed number. Choose a small set you can explain thoroughly, and make sure each project shows a distinct skill or useful problem-solving decision.

What if I cannot answer a technical question?

Be honest about what you do not know. Explain your current understanding and how you would find a reliable answer or test a solution.

Should I memorise answers?

Practise key points, not a script. Natural answers are easier to adapt when an interviewer asks a follow-up question.

Conclusion

A strong junior web developer interview comes from preparation, clear explanations, and honest examples. Review the basics, rehearse a project walkthrough, and practise describing how you solve problems. If you need help planning a website or application project, get in touch with Herby Design.