The complete guide with code examples, evaluation rubrics, and follow-ups

Junior Developer Interview Questions

Hiring junior developers requires a different approach than senior roles. You're assessing potential over experience—their ability to learn, adapt, and grow into valuable team members.

19+ Questions

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Total Questions

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intermediate

advanced

expert

What's Covered in This Guide

Fundamentals & Web Basics

questions

Problem Solving

questions

Code Quality & Testing

questions

Behavioral & Soft Skills

questions

Take-Home Assignments

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Fundamentals & Web Basics

5 questions

Problem Solving

4 questions

Code Quality & Testing

3 questions

Behavioral & Soft Skills

4 questions

Take-Home Assignments

3 questions

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Interview questions assess knowledge, but CodePair reveals how candidates actually solve problems. Watch junior developers code in real-time—process matters more than perfection.

Observe problem-solving process, not just answers
See how they handle getting stuck
Assess communication as they explain their approach
Provide hints naturally without breaking flow

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The complete guide with code examples, evaluation rubrics, and follow-ups

Junior Developer Interview Questions

What's Covered in This Guide

Fundamentals & Web Basics

What happens when you type a URL in the browser and press Enter?

Explain the difference between == and === in JavaScript (or similar equality operators in your language).

What is version control and why is it important? Walk me through a basic Git workflow.

What is the difference between let, const, and var in JavaScript?

Explain what an API is and how you would consume a REST API.

Problem Solving

Write a function that reverses a string without using built-in reverse methods.

Find the largest number in an array. Then find the second largest.

Write a function to check if a string is a palindrome.

Explain what debugging is and walk me through how you would debug a piece of code that isn't working.

Code Quality & Testing

What makes code 'clean' or 'readable'? Can you refactor this code to be cleaner?

What is DRY principle? Show me an example of applying it.

How do you write code that's easy to test? What makes code testable?

Behavioral & Soft Skills

Tell me about a project you've worked on. What was your role and what did you learn?

How do you approach learning a new technology or programming language?

Describe a time when you received critical feedback. How did you handle it?

What questions do you have for us?

Take-Home Assignments

Take-Home Assignment: Build a Simple Todo App

Take-Home Assignment: API Integration Challenge

Live Coding: FizzBuzz and Follow-up Variations

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