Popular Kotlin Developer Certifications and Courses in 2023

1. Complete Kotlin development masterclass 2023 by Udemy

The Complete Kotlin Development Masterclass 2023 is a comprehensive course designed to teach students everything they need to know to become proficient Kotlin developers. The course consists of eight modules that will cover various aspects of Kotlin development, including syntax, control structures, data structures, object-oriented programming, lambda expressions, coroutines, multithreading, and Android development.

1. Introduction to Kotlin: This module provides an introduction to Kotlin, a modern programming language developed by JetBrains. It covers the basics of Kotlin syntax, including syntax rules, variables, functions, classes, and object declarations. Students will explore key Kotlin features such as type inference, null safety, and data classes. They will also learn about the benefits of using Kotlin for software development.
2. Kotlin Control Structures: This module focuses on control structures in Kotlin. It covers the basics of conditional statements, such as if statements, if-else statements, and switch statements. Students will also learn about control flow statements, such as loops and recursion.
3. Kotlin Data Structures: This module introduces data structures in Kotlin. It covers the basics of arrays, lists, maps, and sets. Students will explore how these data structures are implemented in Kotlin and will learn how to manipulate and process data efficiently.
4. Kotlin Object-Oriented Programming: This module introduces object orientation in Kotlin. It covers the basics of classes, objects, inheritance, and polymorphism. Students will understand how to create classes, implement abstract classes, and derive classes from existing classes. They will also learn how to access and modify class members dynamically using getters and setters.
5. Kotlin Lambda Expressions: This module covers lambda expressions in Kotlin. It introduces the concept of lambda functions and explains how they can be used to concisely express complex logic. Students will explore the basics of lambda expressions and learn how to implement them in different contexts.
6. Kotlin coroutines: This module introduces coroutines in Kotlin. Coroutines provide a powerful framework for managing concurrent and asynchronous tasks. Students will explore the basics of suspending and non-suspending coroutines and learn how to implement efficient asynchronous code.
7. Kotlin Multithreading: This module explores multithreading in Kotlin. It covers the basics of concurrency and thread management. Students will understand how to create concurrent programs, handle thread safety, and synchronize access to shared resources.
8. Kotlin for Android Development: This module focuses on using Kotlin for Android development. It covers the basics of building Android apps with Kotlin, including integrating Kotlin code with Android SDK components. Students will also learn how to take advantage of Kotlin features such as type-safe collections, data binding, and Android extensions.

Offering 30.5 hours on-demand video, by the end of the course, students will have a thorough understanding of the fundamentals of Kotlin development and will be well-equipped to pursue a career in Kotlin development.

2. Kotlin for Java Developers by Udemy

1. Introduction to Kotlin: In this module, we will provide an overview of the fundamentals of Kotlin, including an overview of the syntax and key features of the language. We will delve into various Kotlin libraries and introduce you to the basics of Kotlin application development.
2. Kotlin Basics: This module will focus on the basics of Kotlin programming, including classes, objects, and data structures. We will delve into the fundamental concepts of object-oriented programming (OOP) in Kotlin and explore the different data structures provided by the language.
3. Kotlin Control Flow: In this module, we will explore the various control flow constructs available in Kotlin. We will cover topics like conditional statements, loops, and error handling. We will also discuss the use of break and continue statements in Kotlin.
4. Kotlin Functions: This module delves into the world of Kotlin functions. We will cover the basics of function definition, as well as understanding function arguments and capturing values. We will also explore higher-order functions and an introduction to Kotlin lambdas.
5. Kotlin OOP: In this module, we will delve into the advanced features of Kotlin OOP. We will explore topics such as inheritance, polymorphism, and interfaces. By the end of this module, you will be able to leverage the full power and flexibility of object-oriented development in Kotlin.
6. Kotlin Collections: In this module, we will cover the Kotlin collections API. We will delve into the various collection types provided by the language, such as lists, sets, and maps. We will explore common operations on these collections and learn how to manipulate data efficiently.
7. Kotlin I/O: In this module, we will delve into the world of Kotlin I/O. We will cover the basics of file operations and learn how to read and write data from files. We will also discuss the various I/O streams available in Kotlin and how to handle input and output operations effectively.
8. Kotlin Concurrency:  In this module, we will delve into the world of Kotlin concurrency. We will cover the essentials of writing concurrent programs in Kotlin, including understanding concurrency constructs such as threads and asynchronous programming. We will explore common use cases and best practices for writing thread-safe code in Kotlin.
9. Kotlin for Android: In this module, we will focus on using Kotlin for Android development. We will cover the basics of setting up Kotlin projects for Android and delve into common patterns and best practices for Android development with Kotlin. We will also discuss the integration of Kotlin with Android SDK components.
10. Advanced Kotlin: In this module, we will delve into the advanced features of Kotlin. We will cover topics such as Kotlin extensions, type inference, and multiplatform development. We will explore advanced topics such as functional programming concepts and metaprogramming with Kotlin.

Offering 16.5 hours on-demand video, by completing this course, you will acquire a solid foundation in Kotlin programming and be ready to embark on your Kotlin journey.

3. Mastering Android App Development with Kotlin [XML +COMPOSE] by Udemy 

Mastering Android App Development with Kotlin [XML + COMPOSE] is a comprehensive course designed to provide students with a solid foundation in Android development using the Kotlin programming language. This course covers a wide range of topics, from the basics of Kotlin to advanced topics such as XML layouts and using the Composer library.

1. Introduction to Kotlin: This module provides a comprehensive introduction to Kotlin, a modern programming language developed by JetBrains. Kotlin is a statically typed language that combines the conciseness of JavaScript with the power and productivity of Java. In this module, you will gain a deep understanding of the benefits of using Kotlin for Android development, as well as the similarities and differences between Kotlin and Java.
2. Working with XML: XML (Extensible Markup Language) is a standard markup language used for defining structured documents. In Android development, XML plays a crucial role in defining the layout of user interfaces. This module covers the fundamentals of XML and explains how to work with XML in Kotlin. You will learn how to create and work with XML layouts, as well as integrate them into your Kotlin applications.
3. Using Composer: Composer is a powerful Android library that makes it easy to work with layouts and views. It offers a wide range of features and capabilities, simplifying the development of complex user interfaces. This module introduces Composer and explores how to harness its power in Kotlin applications. You will learn how to create and work with Composer layouts, enabling you to build visually stunning Android applications.

This course offers 51 hours on-demand video. By the end of the course, you will have gained a solid understanding of Kotlin, XML, and Composer, and will be well-equipped to create powerful and efficient Android applications. Whether you are a beginner or an experienced developer looking to expand your skillset, this course will empower you to master Android app development with Kotlin.

4. The Complete Android 12 & Kotlin Development Masterclass by Udemy 

The Complete Android 12 & Kotlin Development Masterclass by Udemy is a comprehensive course that provides a comprehensive overview of Android development and Kotlin programming language. It covers various topics such as creating UIs, working with data, networking and REST APIs, app states and navigation, app performance, and app testing and debugging.

1. Introduction to Kotlin: In this section, you will get an introduction to Kotlin, a modern and concise programming language developed by JetBrains. You will learn the basic syntax and variables in Kotlin, which will help you start building your Android apps. This section lays the foundations for the rest of the course.
2. Creating UI with Kotlin: Kotlin provides powerful features for building visually stunning user interfaces (UIs) for your Android apps. In this section, you will gain a deep understanding of how you can create UIs in Kotlin, including the different types of UI components available. You will also learn how to customize these components and add them to your layouts.
3. Working with Data: In this module, you will delve into the world of working with data in Kotlin. You will learn about the different database operations you can perform with SQLite, a lightweight database engine. You will also learn how to store, retrieve, and update data from your database.
4. Networking and REST APIs: Networking is a fundamental aspect of Android development, and this module covers it in detail. You will learn about HTTP requests and responses, as well as different ways to make your apps communicate with external servers and APIs.
5. App States and Navigation: App states and navigation play a crucial role in making your app user-friendly and interactive. In this section, you will learn about the different app states and how to navigate between them effectively. You will also explore the different approaches to implementing app states and navigation, such as using fragments and navigation components.
6. App Performance: App performance is essential for delivering a smooth and engaging user experience. This module covers various techniques that you can employ to optimize your app’s performance, such as lazy loading, caching, and asynchronous programming. You will also learn how to measure and benchmark the performance of your app.
7. App Testing and Debugging: Testing and debugging are essential aspects of Android app development. In this module, you will learn different strategies for app testing and debugging, including unit testing, integration testing, and UI testing. You will also learn how to detect and fix common errors and bugs in your apps.

This course offers 47 hours on-demand video. By completing this course, you will gain a deep understanding of Android development and Kotlin programming, which will enable you to build robust and high-quality Android apps. With practical exercises and real-world examples, you will acquire the necessary skills to become a proficient Android developer.

As you can see in the summarized table above, the levels, costs and duration relevant to these courses vary. Therefore, some tend to be more expensive, and some are more appropriate for beginners while others for intermediate or advanced developers. For your choice of Kotlin Developer Certifications and Courses to pursue, it remains key to consider your own budget, skill level as well as goals.

5. Conclusion 

These certifications and courses provide valuable opportunities for Kotlin developers to enhance their skills and stay up-to-date with the latest trends and best practices in Kotlin development. Whether you are a beginner or an experienced developer, investing in these resources can significantly boost your proficiency and open doors to exciting career opportunities in 2023.