Reactive programming courses can help you learn asynchronous data streams, event-driven architecture, and the principles of reactive systems. You can build skills in handling real-time data, managing state changes, and implementing backpressure strategies. Many courses introduce tools like RxJava, Reactor, and Akka, that support building responsive applications and integrating with APIs. By exploring these topics, you’ll gain practical experience in creating applications that efficiently respond to user interactions and system events.

Skills you'll gain: Node.JS, Back-End Web Development, User Accounts, Server Side, Swift Programming, Full-Stack Web Development, Web Development, Programming Principles, Real Time Data, iOS Development, Apple iOS, Frontend Integration, Web Applications, Restful API, Authentications, Data Management, UI Components, User Interface (UI), Data Security
Advanced · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Javascript, Application Programming Interface (API)
★ 4.9 (11) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Jest (JavaScript Testing Framework), Cloud Deployment, Software Testing, Web Development, Full-Stack Web Development, Real Time Data, Application Programming Interface (API), Authentications, Context Management
Intermediate · Course · 1 - 3 Months

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Scala Programming, Other Programming Languages, Computer Programming, Programming Principles, Program Development, Theoretical Computer Science
Mixed · Course · 1 - 3 Months

Coursera
Skills you'll gain: TypeScript, Programming Principles, Computational Logic, Computer Programming Tools, Computer Programming
★ 4.6 (21) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Spring Framework, Hibernate (Java), Java Programming, Spring Boot, Java, Object-Relational Mapping, Database Management, Application Frameworks, Data Access, Apache Maven, SQL, Object Oriented Programming (OOP), Data Persistence, Functional Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Persistence, Object Oriented Programming (OOP), Object Oriented Design, Javascript, Web Applications, Application Programming Interface (API), User Interface (UI), Interactive Design, Front-End Web Development, Event-Driven Programming, Responsive Web Design, Animations, Scalability
Beginner · Course · 1 - 3 Months

Skills you'll gain: Application Programming Interface (API), Javascript, Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Apache Spark, Data Pipelines, PySpark, Real Time Data, Data Transformation, SQL, Data Processing, Data Analysis
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: React.js, ChatGPT, Application Deployment, JavaScript Frameworks, OpenAI API, Cloud Deployment, AI Integrations, Front-End Web Development, Frontend Integration, Data Persistence, UI Components, Application Programming Interface (API), User Interface (UI), Cascading Style Sheets (CSS), Data Storage Technologies, User Experience Design, Configuration Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: OpenAI API, LLM Application, OpenAI, Generative AI Agents, ChatGPT, Cost Benefit Analysis, Tool Calling, Generative AI, Cloud API, AI Integrations, Application Programming Interface (API), Development Environment, Business Logic, Prompt Engineering, Scalability, Business Analysis, Business Solutions, Scripting, TypeScript, Node.JS
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Javascript, Event-Driven Programming, Web Development, HTML and CSS, Scripting, Scripting Languages, Web Applications, Hypertext Markup Language (HTML), Programming Principles, Interactive Design, Data Validation
Beginner · Course · 1 - 4 Weeks