Building REST APIs with Kotlin and Spring Boot

Modern backend development demands both speed and safety, which is why combining Spring Boot with Kotlin has become a top choice for developers worldwide. If you want to build efficient web services, mastering how to handle HTTP requests with Spring controllers is your essential first step. This text-based course guides you through the fundamentals of web architecture, controller design, and endpoint configuration. You will gain the confidence to structure clean Kotlin code, leverage modern language features, and expose secure, reliable APIs. What you'll learn: Understand core REST API concepts and Spring Boot framework architecture; Configure HTTP routing, path variables, and query parameters using Kotlin syntax; Leverage Kotlin's null safety and data classes to handle request payloads safely; Implement asynchronous request handling using Kotlin coroutines in Spring; Verify and test your controller endpoints using standard testing tools and MockMvc; Apply best practices for structured error handling and HTTP status codes. You will start with foundational web concepts and Spring annotations, then progress to parsing data, managing application state, and writing automated tests for your endpoints. Each concept is reinforced with written explanations and structured code snippets. This course is designed for beginning backend developers, Java programmers transitioning to Kotlin, and web developers looking to build APIs with Spring Boot. No prior experience with Spring or Kotlin is required, though a basic understanding of programming concepts is helpful. Start reading today to build your first modern backend API with Kotlin and Spring Boot.