Strategy to Hire a Skilled Kotlin Developer

Your ultimate checklist for how to hire a Kotlin Developer. Includes what to look for while hiring Kotlin Developer, skills to test, capabilities based on experience level, sample questions and a ready-to-use Kotlin Developer assessment.

Hire a Kotlin Developer 5 star G2 review 900+ reviews
Hero Image
7,790

Candidates Assessed

Trusted by

LG Logo Stepful Logo Ant Group Logo Fortrea Logo HRTech Logo Joola Logo Schlumberger Logo MailerLite Logo Multicoreware Logo Hangry Logo
LG Logo Stepful Logo Ant Group Logo Fortrea Logo HRTech Logo Joola Logo Schlumberger Logo MailerLite Logo Multicoreware Logo Hangry Logo

How to hire a Kotlin Developer

Specifications for a Kotlin Developer

Deciding on a Tech Stack for a Kotlin Developer

When hiring a Kotlin Developer, it's crucial to decide on a tech stack compatible with Kotlin's features. Kotlin is versatile, seamlessly integrating with existing Java environments. This compatibility allows for leveraging Kotlin's concise syntax and safety features in Android development or backend services. Ensure your tech stack includes tools and frameworks that enhance Kotlin's interoperability, like JVM (Java Virtual Machine) for backend development or Android Studio for mobile development.

Assessing skills of a Kotlin Developer

Assessing a Kotlin Developer's skills involves evaluating their proficiency in Kotlin and its application in various domains. For Android development, assess their understanding of Kotlin's Android extensions and its use with Android SDK. For backend roles, focus on their experience with Kotlin's interoperability with Java and JVM frameworks. Also, evaluate their knowledge in using Kotlin for web development, especially in creating RESTful APIs and integrating with databases.

Create Assessment

Concepts your Kotlin Developer should know based on experience

Kotlin Developers assessed using Equip’s assessments

Entry-level Kotlin Developer

4,932

Mid-senior Kotlin Developer

2,091

Senior Kotlin Developer

767

  • Basic Syntax and Control Structures: Familiarity with Kotlin's syntax, variable types, control flow structures, and error handling.
  • OOP Principles in Kotlin: Understanding of object-oriented programming concepts like classes, objects, inheritance, and encapsulation in Kotlin.
  • Standard Library Usage: Knowledge of Kotlin's standard library for common operations like collection manipulation and I/O operations.

  • Advanced Kotlin Features: Mastery of lambdas, higher-order functions, and extension functions.
  • Interoperability with Java: Ability to integrate Java code and libraries seamlessly with Kotlin.
  • Concurrency and Asynchronous Programming: Understanding of Kotlin coroutines for managing background tasks and improving app performance.

  • Architectural Patterns: Proficiency in MVVM, MVP, or Clean Architecture, especially in Android development.
  • Advanced Android Concepts: Deep understanding of Android Jetpack, Room, LiveData, and Data Binding in Kotlin.
  • Full-stack Development: Experience in using Kotlin for both frontend (Android) and backend (JVM frameworks) development, including web services.

What can you do with Kotlin Developer Assessment on Equip

Add more test types such as video interview, SQL test, CSS test etc

Choose and add from 100+ skills from Equip’s Question Bank

Add your own programming and quiz questions with a Custom Test

About Kotlin Developer

Anjanay S's Profile Picture

Anjanay S

Recruiter
HR Lead
Crunch's Logo
It just gets the job done!
I liked the Lever integration, UI is easy to understand and the depth of questions for backend (developer) roles. Other platforms like HackerRank are a little expensive. Equip has everything you need for a testing platform.
5 star G2 review 900+ reviews

A Kotlin Developer specializes in using Kotlin, a modern programming language, to develop a range of applications, particularly for Android. Kotlin offers a concise and expressive syntax, robust null-safety, and full interoperability with Java, making it a preferred choice for Android app development. Kotlin Developers often work on migrating existing Java applications to Kotlin, developing new Android apps, or utilizing Kotlin for backend development in server-side applications. Examples include creating intuitive mobile applications or efficient backend services.

1. Importance of Kotlin Developer

  • Enhanced Productivity: Kotlin's concise syntax reduces boilerplate code, speeding up development.
  • Improved App Performance: Kotlin's efficient compilation increases app performance.
  • Interoperability with Java: Allows for smooth integration with existing Java codebases.
  • Robust Safety Features: Null safety and immutability features reduce runtime errors.
  • Growing Community Support: A rapidly expanding Kotlin community contributes to a wealth of resources and tools.

2. Recent Industry Trends for Kotlin Developers

  • Multiplatform Development: Kotlin's expanding into multiplatform projects, enabling shared codebases for Android and iOS.
  • Kotlin/Native for iOS: Increased use of Kotlin/Native for developing iOS apps.
  • Server-side Development: Adoption of Kotlin for backend development with frameworks like Ktor.
  • Kotlin in Data Science: Emerging use of Kotlin in data science and machine learning projects.
  • Gradual Java to Kotlin Transition: More Java-based projects are transitioning to Kotlin.

3. Popular Frameworks for Kotlin Developers

  • Android Jetpack: A suite of libraries for Android app development.
  • Ktor: A framework for building asynchronous servers and clients. 3. Spring
  • Boot: Popular for Kotlin backend development.
  • Exposed: A lightweight SQL library for Kotlin.
  • Coroutines: For managing asynchronous tasks and simplifying code.

How Equip helps you hire a Kotlin Developer

Seamless hiring made easy in 3 simple steps
1
Create & Share assessment
Using Equip's Question Banks, or add your own questions
2
Candidates finish assessment remotely
Typically, 30 mins to 1 hour. With anti-cheating measures
3
Shortlist only the best performing candidates
Equip automatically evaluates candidates' responses

Frequently Asked Questions

For Kotlin Android development, look for experience with Android SDK, understanding of Kotlin-specific features like coroutines and extension functions, and familiarity with Android Jetpack components.

Evaluate their understanding of Kotlin's interoperability with Java, experience with JVM frameworks, and ability to create robust RESTful APIs and server-side logic.

Entry-level developers are suitable for basic Kotlin app development tasks. Mid-senior level developers should handle more complex Android or backend projects. Senior developers are ideal for leading projects and integrating advanced Kotlin features.

Java knowledge is crucial due to Kotlin's interoperability with Java. It's important for migrating Java codebases to Kotlin and integrating with existing Java frameworks.

Consider the Kotlin developer's experience with Java, their understanding of converting Java code to Kotlin efficiently, and their ability to maintain and improve the existing codebase during the transition.

Discover the Power of Effective Skills Testing Today!

Get started with Equip and streamline your hiring process | No credit card needed

Convinced? Start Hiring
Last updated: November 03, 2025