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How to Hire Kotlin Developers: A Comprehensive Guide

03 February 2025

Mobile

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Kotlin has quickly become a top programming language, especially for Android apps. Since its public launch in 2011, it has gained popularity for being safe and easy to use. 

Many companies have moved from Java to Kotlin. Its simple syntax and modern features make it great for high-quality mobile apps. As Kotlin becomes more popular, the need for skilled developers grows.

Hiring dedicated Kotlin developers is key to your project's success. The right talent can make your Android app or backend team more efficient and innovative.

In this guide, we'll show you how to hire dedicated Kotlin developers who deliver scalable and maintainable solutions. It will cover what to look for in a developer and how to find the right candidates; this article will guide you through the entire process.

Let's begin!

What is Kotlin Used For?

Before hiring Kotlin developers, understand what Kotlin is and its popularity surging. Kotlin is an open-source programming language. Developers prefer it because its code is easy to read and maintain. JetBrains says Kotlin is 40% shorter than Java.

On the bright side of Kotlin is its cross-platform compatibility. It works with Java, letting you share code across platforms. For example, you can develop a mobile app that works on both Android and iOS with a single codebase.

Here's what Kotlin is commonly used for:

  • Web applications
  • Front-end development
  • Android mobile applications
  • Server-side applications
  • Multi-platform libraries

Its cross-platform capabilities make it a top choice for businesses. Existing apps can be updated using cross-platform without rewriting them from scratch.

What Does a Kotlin Developer Do?

A Kotlin developer develops and supports applications using Kotlin. Below are the primary duties of a Kotlin developer:

  • Develops mobile applications using clean and efficient Kotlin code
  • Ensures code is reliable, maintainable, and optimized for performance
  • Identifies and resolves performance problems in the application
  • Conducts unit testing for error-free apps
  • Best user experience
  • Collaborate with other team members throughout the app development process

When you hire Kotlin app developers, they must be skilled at all these tasks. This will ensure your project's success.

Advantages of Kotlin

Kotlin has emerged as a top choice. Mobile application development is fast because Google endorses it as the language of choice for Android app development. While working with Kotlin-based applications, if there is a Kotlin developer, it is very helpful. Kotlin has several benefits that make it a good choice for app development.

Advantages of Kotlin

Here's a simple breakdown of why Kotlin is a great choice.

1. Less Coding Required

One of the best things about Kotlin is that it lets developers write less code. That is, the app can be implemented more quickly, saving resources and time. In addition to this, it makes maintenance and updating of apps much easier without much extra work.

2. More Secure

Kotlin supports the making of apps with very tight security. It minimizes problems such as app crashes and bugs caused due to coding mistakes. Kotlin has features like null safety and immutability. They help to write stable apps that are hard to fail.

3. Open-Source Language

Originally from JetBrains, Kotlin is open source, making it free to use without paying for it. Developers develop it from different parts of the world as the language comes into existence and gets better with time. Being open source also brings along a free license on it hence can be much to the advantage of a business.

4. Google Support

Google 2019 declared Kotlin the officially declared coding language for Android application development. In simple terms, this means Google will support Kotlin fully by delivering new features and tools to Kotlin developers ahead of others. Strong backing from Google makes Kotlin a reliable choice for developing Android apps.

5. Compatible

Kotlin is very compatible with other technologies. It's good for mobile as well as web app development. Kotlin Multiplatform (KMP) is an SDK designed for cross-platform app development, allowing developers to implement identical business logic across various platforms. 

If you're developing an Android app or a website, you can use Kotlin. It works for both client-side and server-side development. This makes it a versatile tool for all kinds of projects.

Essential Skills from Kotlin Developers

When searching for a Kotlin developer, find one with the right mix of skills. Here is a checklist to help:

Technical Skills

  • Object-Oriented Programming (OOP): Essential for clean, efficient code.
  • Java Knowledge: Understanding Java is essential. As Kotlin and Java are closely related.
  • Cross-Platform Development: Experience with cross-platform app development with React Native or Flutter is a plus.
  • Android App Development: Experience with Kotlin and Android Studio is key.
  • Android SDK & Libraries: Knowledge of the SDK is mandatory.
  • Web Development: Knowledge of Spring Boot or Ktor is desirable.
  • Software Testing: Familiarity with test principles will ensure the dependability of the code.

Soft Skills:

  • Communication: This aspect includes proper communication for explanation as well as understanding requirements
  • Problem Solving: Diagnosis of the problem and further solutions.
  • Time Management: Timely management of deadlines along with priorities.
  • Team Player: The success factor also relies on teamwork.
  • User-Centricity: Keeping given the user ensures a product meets expectations.

How to Hire Kotlin Developers: A Step-by-Step Guide

Hiring a Kotlin developer requires thoughtful planning to ensure you find the right fit for your project. Each step is critical in selecting the best developer. This includes defining requirements, evaluating portfolios, and conducting interviews.

By following these steps to hire Kotlin developer, you can make the process more efficient and find the right candidate.

Define Your Requirements Clearly

Before you start the hiring process for a Kotlin developer, it's crucial to have a detailed understanding of your project. Define the scope of your mobile app, including key features, functionality, and the desired timeline. 

Having clear requirements will not only help you communicate your vision effectively to potential developers but will also ensure that you are aligned with their capabilities right from the beginning.

Research and Shortlist Candidates

With your project needs in place, begin searching for qualified Kotlin developers.. Carefully review their profiles, portfolios, and client feedback to assess their qualifications and the relevance of their experience. Shortlist candidates based on their skills, past work, and fit with your project's needs.

Build crash-free mobile experiences using modern Kotlin code

Conduct Thorough Interviews

A well-structured interview process is critical to hiring the right Kotlin developer. Prepare a list of technical and behavioral questions to assess their expertise with Kotlin, problem-solving abilities, and experience with mobile app development. 

Inquire about their past projects, experience with project management, and how they handle challenges, especially under tight deadlines.

 Evaluate their communication and collaboration skills, as effective teamwork is essential for a smooth development process. Be sure to discuss their availability and willingness to adapt to your project needs.

Check References and Portfolio

Before making a final decision, verify the developer’s credentials and past work. Reach previous clients or employers. Ask about the developer's work ethic, reliability, and the quality of their work. 

Ask about their ability to meet deadlines, communicate effectively, and handle any challenges that arose during previous projects. 

Additionally, review their portfolio for examples of similar apps they have developed, paying attention to design, functionality, and overall quality. This will give you a clear idea of their capabilities and style.

Onboard & Manage Effectively

Once you've selected your Kotlin developer, ensure a smooth onboarding process by clearly defining expectations, deliverables, and timelines.

Set up communication channels and ensure that both you and the developer are aligned on project goals. Use project management tools to track progress and manage tasks efficiently.

Regularly check in with the developer to address any concerns, provide feedback, and make adjustments as necessary. By managing the project effectively, you’ll ensure that the development process is smooth, and transparent, and leads to a successful outcome.

For those wondering how to find a Kotlin developer, remember that setting clear expectations and using the right tools is key to managing your developer and ensuring the project stays on track.

Where Do I Find Freelance Developers?

There are three places for finding Kotlin developers: a freelancer, an in-house team, or an agency. Each one has positive and negative aspects, but it depends on your situation, requirements, and goals for creating applications.

Freelancers are best for short-term or flexible projects. In-house teams give you control but can be pricey. Outsourcing companies bring expertise and scalability, making them a great choice for larger projects. While choosing In-house Developers vs. Outsourcing, consider the trade-offs in control, cost, and scalability based on your project's needs.

Ultimately, the best choice depends on your project’s needs, budget, and timeline. Choose wisely based on what's most important for your development goals.

Coming to an end

The internet provides access to so many developers that can be too much to handle. Screening through so many resumes to pick the right one is time-consuming and laborious. It is best, therefore, to engage a known mobile app development company that can make the process much easier and not costly with mistakes.

We hope this Kotlin developer hiring guide answers your questions about hiring a dedicated developer.

WRITTEN BY

Mukund Jogi

Mukund is a Kotlin enthusiast who specializes in Android development, creating sleek, high-performing apps that users love. He’s always pushing boundaries with his mobile development skills.

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