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.

Coursera
Skills you'll gain: Data Manipulation, Tidyverse (R Package), Data Wrangling, Data Analysis, R Programming, R (Software), Data Transformation, Statistical Analysis
★ 4.6 (22) · Beginner · Guided Project · Less Than 2 Hours

Meta
Skills you'll gain: Git (Version Control System), Android Jetpack, Version Control, Android Development, Android Studio, User Interface and User Experience (UI/UX) Design, Mobile Development, Application Design, User Interface (UI), UI/UX Strategy, Kotlin, Application Development, User Interface (UI) Design, UI Components, User Flows, Data Access, Information Architecture
★ 4.7 (43) · Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Python Programming, Programming Principles, Computational Logic, Computer Programming, Web Development Tools, Web Development, Software Engineering
★ 4.6 (17) · Intermediate · Course · 1 - 4 Weeks

Codio
Skills you'll gain: Go (Programming Language), Package and Software Management, Object Oriented Programming (OOP), Web Services, Web Frameworks, Debugging, Python Programming, Server Side, Performance Tuning, Other Programming Languages, Software Engineering, Programming Principles
★ 3.6 (10) · Beginner · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Pandas (Python Package), NumPy, Probability & Statistics, Unsupervised Learning, Applied Machine Learning, Statistical Methods, Data Science, Statistics, Data Analysis, Statistical Analysis, Jupyter, Machine Learning Algorithms, Data Manipulation, Descriptive Statistics, Plot (Graphics), Data Processing, Data Visualization Software, Python Programming, Machine Learning
★ 4.6 (21) · Beginner · Course · 1 - 4 Weeks

Case Western Reserve University
Skills you'll gain: Exploratory Data Analysis, Spatial Data Analysis, Spatial Analysis, Geospatial Mapping, Geospatial Information and Technology, Descriptive Statistics, Statistical Modeling, R Programming, Statistical Analysis, R (Software), Probability & Statistics, Statistical Programming, Data Wrangling, Data Analysis, Simulations, Statistical Methods, Rmarkdown, Data Cleansing, Box Plots, Plot (Graphics)
Intermediate · Specialization · 3 - 6 Months

Duke University
Skills you'll gain: Web Scraping, Extensible Markup Language (XML), Web Development Tools, Scripting, Hypertext Markup Language (HTML), Web Applications, Python Programming
★ 3.1 (19) · Intermediate · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: ASP.NET, .NET Framework, Model View Controller, Web Applications, Middleware, Debugging, Web Development, Application Deployment, Application Development, Development Environment, Software Testing, Microsoft Development Tools, Software Design Patterns, Cross Platform Development, Software Architecture, Open Source Technology, Command-Line Interface
★ 4 (79) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: File I/O, Plot (Graphics), Pandas (Python Package), Data Persistence, NumPy, Scripting, Object Oriented Programming (OOP), Python Programming, Scripting Languages, Query Languages, Databases, Object Oriented Design, Data Import/Export
★ 4.4 (21) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Star Schema, Microsoft SQL Servers, Database Design, Relational Databases, SQL, Data Warehousing, Database Development, Query Languages, Transact-SQL, Data Integrity, Power BI, Business Intelligence, Performance Tuning, Generative AI
★ 5 (10) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Context Engineering, Development Environment, Program Development, Prompt Engineering, Large Language Modeling
★ 4.2 (90) · Beginner · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Javascript, JavaScript Frameworks, Program Development, Web Development, Angular, Vue.JS, Application Development, React.js, Web Applications, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Data Structures, Software Engineering, Computer Science
★ 4.6 (23) · Intermediate · Course · 1 - 3 Months