How to Hire Kotlin Developer in 2023: A Comprehensive Guide

July 17, 2023

Kotlin is a new universal programming language designed to make mobile app development easier and more efficient. It is a cross-platform, statically typed language with full compatibility with Java.  Kotlin was designed to improve coding productivity and code safety. There are around 4.86 million Kotlin developers in the world already. Most of these are Android […]


Kotlin is a new universal programming language designed to make mobile app development easier and more efficient. It is a cross-platform, statically typed language with full compatibility with Java. 

Kotlin was designed to improve coding productivity and code safety. There are around 4.86 million Kotlin developers in the world already. Most of these are Android app developers.

Kotlin is one of the top ten fastest-growing programming languages, according to Github. It avoids common mobile application mistakes.

Google announced Kotlin as the preferred language for Android application development, contributing to its growth.

What Is The Purpose Of Kotlin?

Kotlin is an open-source language that runs on the JVM and is fully compatible with Java. 

Kotlin was first designed primarily for Android devices, but its community grew, and it now offers a diverse set of applications.

Android development

Kotlin was first released for Android devices, allowing developers to write simpler, more secure code. 

Android Studio was the first Kotlin IDE, allowing you to implement code completion and type checking like Java does.

Back-end web development

Kotlin makes server-side web development much simpler than Java. Because Kotlin is a current programming language, it includes new features that allow web developers to design scalable applications. 

Full-stack web development

Full-stack developers simply need to be familiar with Kotlin, and they will produce front-end code in the same language they used for the back-end, which will be compiled into JavaScript and run in the browser.

Data Science

Data Scientists can use all of the standard Java libraries that they are familiar with in Java projects, but their code must be written in Kotlin. 

Data scientists employ Kotlin libraries for data visualization and experimental research in their projects.

How to Hire Kotlin App Developer for Your Project?

Hire Kotlin App Developer

To top hire Kotlin developers, you must first create an app. Following these procedures will allow you to recruit the best Kotlin developers available. 

The steps to hiring Kotlin developers based on your needs are as follows,

  • Determine the project’s goal.
  • Examine the experience of the Kotlin app developer.
  • Check the work portfolio.
  • Consult with prior Kotlin developers’ clients.
  • Fix the communication protocols in collaboration with Kotlin developers.
  • Complete the development strategy.
  • Set the budget for the Kotlin app.


The Kotlin developer should be familiar with Java and have a basic understanding of OOPS ideas and how to apply them. They are also familiar with the mobile app ecosystem, including front-end components and server-side frameworks.

Here is a detailed list of requirements for Kotlin App Developers.

  • Experience developing Android apps with Kotlin, Android Studio, and similar tools.
  • Knowledge of software development strategies such as Agile or Scrum.
  • Knowledge of cross-platform development frameworks such as React Native, Flutter, and others is advantageous.
  • Swift or Objective-C, app development experience is preferable.

Skills Of Kotlin Developer 

An ideal Kotlin developer, like any other programming language, will have equal hard and soft skills. Here are the qualities to look for when hiring a Kotlin developer for your project.

Hard Skills for Kotlin Developers

The following are the hard or technical talents to look for in Kotlin developers.

  • Null safety
  • Experience with Kotlin Lambda functions and knowledge of the Java scripting language
  • Programming procedures
  • Understanding of abstract classes and objects
  • Excellent understanding of Java and Kotlin
  • Experience with XML Android Studio and other Android tool-sets
  • SQL and Linux knowledge
  • Storage of data on devices with limited memory capacity
  • Back-end website scripting
  • Android app development
  • Understanding of functional programming
  • JVM (java virtual machine) expertise
  • Understand the ideas and techniques of software testing and quality assurance

Soft Skills for Kotlin Developers

Hire Kotlin app developers who have outstanding soft skills along with hard skills. Soft skills are required to guarantee that your Kotlin developers fit well with the team. 

The following are the soft skills that a Kotlin developer should have. 

  • The research mindset
  • Time-management
  • Adaptive attitude
  • Thorough knowledge of the user’s point of view
  • Attitude of a Learner
  • Interpersonal abilities
  • Accepting responsibility for errors

Questions to Ask Before Hiring Kotlin Developers

If you have a technical team member on board, you should ask a few technical questions before hiring the developer. 

We’ve created a collection of queries for interviews to assist you in hire dedicated Kotlin app developers.

  1. Why does Google prefer Kotlin for Android development over Java?
  2. Could you please clarify the distinction between val and var?
  3. In Kotlin, how can you use coroutines?
  4. When should you use an array, and when should you use a list?
  5. Kotlin provides null safety in what way?
  6. Can you think of any drawbacks to adopting Kotlin?
  7. In Kotlin, how will you create a Singleton class?

Where to Hire Kotlin App Developers?

Hire dedicated Kotlin App Developers


They are contract workers that work as a self-employed individual. If your project is short-term and you have a limited budget, you may want to consider hiring a freelance Kotlin developer. 

Freelance developers can be found on websites like, Upwork, LinkedIn, and others.

In-house developer

In-house development necessitates the formation of a strong team from the start. Companies hire full-time employees based on the abilities required to create their teams. 

In-house workers are somewhat motivated as they come to the office and engage with colleagues. In-house personnel can be hired by posting job openings online. 

With all of these layoffs and the recession, posting a job opportunity may help you attract qualified developers.


Outsourcing is a commercial technique whereby businesses contract a third-party service provider to complete a task. They are not part of the in-house team but are easily traceable. 

Outsourcing might be risky, but if you choose your outsourcing Kotlin app development company carefully, you will be safe. Outsourcing also allows you to select developers from all over the world.

Advantages Of Kotlin

Advantages Of Kotlin

Because of the many advantages that Kotlin offers its users, Google has begun to promote it as their preferred language for mobile app development

As a result, anytime you hire an Android developer, you must ensure they can design apps in Kotlin. 

Less coding required

Most Kotlin developers like how little coding is required to create an application in Kotlin. Because a Kotlin app requires less coding, the app’s speed in the market is greatly decreased. 

Reduced time-to-market results in significant cost savings. Kotlin enables developers to build code that is both small and concise. 

According to research, Kotlin code has 40% fewer lines than Java. Furthermore, Kotlin allows developers to simply adjust the code.

More protected

Program security is essential for any program, whether it’s an Android or an iOS app

Kotlin is a secure framework that eliminates device crashes and misconfigurations that can occur in an application due to coding flaws. 

Immutability and null safety have been improved in Kotlin. Kotlin enables programmers to create more stable applications.

Open-source language

Because Kotlin is an open-source programming language, no license fees are associated with it. Furthermore, because it is open-source, the platform attracts many developers from all over the world. 

An open-source platform also helps expand by creating a robust community of developers who want to contribute to an open-source platform.

Google support

Google has given Kotlin its full support. Google declared in 2019 that Kotlin is the preferred language for developing Android apps. Google stated that it would first provide new features and APIs to Kotlin. 

The key reason for Google’s backing for Kotlin was its potential to allow developers to achieve the same outcomes with less code.


One of the unique characteristics of Kotlin that makes it a standout performer in the business is its compatibility. 

Kotlin is a language that may be used for both client-side and server-side development. Aside from that, Kotlin may be used to create mobile and web-based apps.

“Partner with ultroNeous Technologies – the Leading Kotlin application development company in USA. Let’s Build Your Next Innovative Solution Together!”

Wrapping It Up

Hiring dedicated Kotlin developers is necessary when you want to develop high-quality applications for a variety of clients’ business needs. 

As a result, having a solid team and working with efficient deep work technologies is critical.

FAQs: Kotlin app development Services

Which back-end language is the fastest?

Kotlin beats JavaScript and all other back-end languages in terms of speed. Together with Kotlin, it allows fewer lines of dependable code with fewer defects and crashes.

Is there a high demand for Kotlin developers?

Yes, Because Kotlin is one of the most popular programming languages in the last five years, Kotlin developers are in high demand.

Is Nodejs quicker than Kotlin?

Kotlin is said to be faster in general since it is a compiled language, as compared to Node.js, which is an interpreted language.

Is Kotlin becoming more popular?

Kotlin is one of the programming languages that has increased in popularity the most in the past few years. According to Android, Kotlin is used in more than 80% of the top 1000 Android apps.

Is Kotlin only for mobile?

Kotlin Multiplatform technology makes cross-platform project development easier. Kotlin programs will run on a variety of platforms, including iOS, Android, macOS, Windows, Linux, watchOS, and others.


Jinesh Shah



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