Kotlin Interview Questions for Freshers
Preparing for your first Kotlin interviews? This set is curated for freshers and early-career developers (0–2 years): the 24 questions that come up most for entry-level roles, each with a clear answer, example code and follow-ups.
24 Kotlin questions
- 1What is object keyword in Kotlin?Intermediate
- 2What is a suspend function?Intermediate
- 3What are coroutines in Kotlin?Intermediate
- 4What is the difference between val and const?Intermediate
- 5What are extension functions?Intermediate
- 6What is a lambda expression?Intermediate
- 7What are higher-order functions in Kotlin?Intermediate
- 8What is string interpolation?Beginner
- 9What is a data class?Beginner
- 10What are loops in Kotlin?Beginner
- 11What is a when expression?Beginner
- 12What is an if expression in Kotlin?Beginner
- 13What is null safety in Kotlin?Beginner
- 14What is a Kotlin class?Beginner
- 15What is a Kotlin function?Beginner
- 16What are variables in Kotlin?Beginner
- 17What is Kotlin and why is it used?Beginner
- 18Kotlin Interview Question 1 (Free)Beginner
- 19Kotlin Interview Question 5 (Free)Intermediate
- 20Kotlin Interview Question 4 (Free)Beginner
- 21Kotlin Interview Question 2 (Free)Intermediate
- 22Kotlin Advanced Interview Question 8Intermediate
- 23Kotlin Advanced Interview Question 7Beginner
- 24Kotlin Advanced Interview Question 10Beginner
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Frequently asked questions
Which Kotlin questions do freshers (0–2 years) get asked?
This page collects 24 Kotlin interview questions aligned with freshers (0–2 years), ranging across the difficulty levels that match that experience band.
How do I prepare for a Kotlin interview with my experience level?
Work through these questions in order, make sure you can explain each answer out loud, and pay attention to the real-world examples and follow-ups — interviewers at this level care as much about reasoning as the final answer.
Do the answers include code and examples?
Yes — answers include explanations, code examples where relevant, common mistakes to avoid and follow-up questions so you are ready for the full interview conversation.