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: ASP.NET, Restful API, Web Development, Object-Relational Mapping, Web Applications, User Accounts, Data Integrity, Single Sign-On (SSO), Application Programming Interface (API), Authentications, Back-End Web Development, Performance Tuning, Authorization (Computing), Identity and Access Management, Data Validation, Model View Controller, Database Management, Multi-Factor Authentication, Data Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Pipelines, Microsoft SQL Servers, Microsoft Azure, Database Development, Data Warehousing, SQL, Data Integration, Extract, Transform, Load
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Data Import/Export, Scripting, R Programming, Data Processing, Statistical Programming, Data Structures
Beginner · Guided Project · Less Than 2 Hours

Pontificia Universidad Católica de Chile
Skills you'll gain: Chemical Engineering, Engineering Calculations, Numerical Analysis, Engineering, Engineering Analysis, Differential Equations, Mechanical Engineering, Simulation and Simulation Software, Applied Mathematics, NumPy, Scientific Methods, Mathematical Modeling, Python Programming, Plot (Graphics), Algorithms
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Restful API, Web Applications, Cascading Style Sheets (CSS), Application Programming Interface (API), Web Services, HTML and CSS, Back-End Web Development, JSON, Frontend Integration, Javascript, Software Development
Intermediate · Course · 1 - 4 Weeks

Logical Operations
Skills you'll gain: Microsoft Power Platform, No-Code Development, Application Deployment, Application Design, Application Development, Microsoft 365, Dashboard, Data-Driven Decision-Making, Software Design, Project Planning, Product Testing, Software Development, Business Solutions, Software Architecture
Mixed · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: JUnit, File I/O, Unit Testing, Program Development, Debugging, Java, Maintainability, Software Development, Secure Coding, Software Testing, Test Case, Authentications, Application Security, Cryptography, Object Oriented Programming (OOP), Eclipse (Software), Integrated Development Environments, Encryption, Data Structures
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Database Design, Relational Databases, Database Development, Microsoft SQL Servers, SQL, Database Management, Databases, Business Requirements, Frontend Integration
Beginner · Guided Project · Less Than 2 Hours

Codio
Skills you'll gain: Prompt Engineering, OpenAI API, Generative AI, Animations, Image Analysis, Graphics Software, Computer Graphics, Application Programming Interface (API), Pandas (Python Package), Integrated Development Environments
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Web Development Tools, Data Structures, Javascript, Scripting, Scripting Languages, Programming Principles
Intermediate · Guided Project · Less Than 2 Hours

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Vibrations, Matlab, Engineering Analysis, Engineering Calculations, Mechanical Engineering, Applied Mathematics, Mechanics, Differential Equations, Mathematical Modeling, Control Systems
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Responsible AI, Generative AI Agents, Data Ethics, Healthcare Industry Knowledge, Healthcare Project Management, Clinical Documentation, Automation, Health Informatics, Artificial Intelligence, Predictive Modeling, Innovation, Health Technology, Healthcare Ethics, System Implementation
Beginner · Course · 1 - 4 Weeks