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.

Scrimba
Skills you'll gain: Data Structures, Programming Principles, Python Programming, User Interface (UI), Scripting, Scripting Languages, Computer Programming, Web Development Tools, Software Engineering, Web Development
Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: ASP.NET, Microsoft Copilot, .NET Framework, Application Programming Interface (API), Middleware, Server Side, Restful API, C# (Programming Language), Back-End Web Development, Application Frameworks, JSON, Software Documentation, Secure Coding, Programming Principles, Extensible Markup Language (XML)
Beginner · Course · 1 - 3 Months

Duke University
Skills you'll gain: Large Language Modeling, LLM Application, Prompt Engineering, Microsoft Azure, OpenAI API, Retrieval-Augmented Generation, OpenAI, Model Deployment, Risk Management Framework, Embeddings, Application Deployment, Application Programming Interface (API), Python Programming
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: SQL, Database Management, MySQL, Relational Databases, Database Systems, Query Languages, Databases, Database Application, Database Design, Data Access, Java, Java Programming, User Interface (UI), Software Development
Beginner · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Object Oriented Programming (OOP), File I/O, Data Structures, Python Programming, Programming Principles, User Interface (UI), Computer Programming, Scripting, Software Engineering, Performance Tuning, Scripting Languages, Web Development, Computational Thinking, Debugging, Random Forest Algorithm, Software Development, Web Development Tools
Beginner · Specialization · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Software Testing, JUnit, Verification And Validation, Unit Testing, System Testing, Test Case, Test Automation, Development Testing, Test Planning, White-Box Testing, Code Coverage, Software Quality Assurance, Functional Testing, Test Data
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Exploratory Data Analysis, Correlation Analysis, Matplotlib, Seaborn, Data Cleansing, Data Visualization, Pandas (Python Package), Data Analysis, Data Manipulation, NumPy, Statistical Analysis, Python Programming
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Project Management Life Cycle, Risk Management, Project Risk Management, Stakeholder Management, Project Management, Risk Mitigation, Active Listening, Project Management Institute (PMI) Methodology, Systems Development Life Cycle, Risk Analysis, Communication, Project Management Software, Stakeholder Communications, Agile Methodology, Conflict Management, Project Documentation
Beginner · Course · 1 - 3 Months

Skills you'll gain: Node.JS, API Gateway, MySQL, Restful API, MongoDB, Microservices, NoSQL, Object-Relational Mapping, Application Programming Interface (API), Database Design, Relational Databases, Unit Testing, SQL, Databases, Data Persistence, Server Side, Application Deployment, Javascript, Software Documentation, Data Modeling
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Prompt Engineering, Data Storytelling, Data Presentation, Dashboard, Interactive Data Visualization, Generative AI, Data Ethics, Responsible AI, Infographics, Data Visualization, Anomaly Detection, Excel Formulas, Predictive Modeling, Data Visualization Software, Microsoft Copilot, Business Reporting, Risk Analysis, Text Mining, Predictive Analytics, Automation
Intermediate · Professional Certificate · 3 - 6 Months

Board Infinity
Skills you'll gain: Application Development, Program Development, Development Environment, Microsoft Visual Studio, Software Design Patterns
Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Tidyverse (R Package), Clinical Data Management, Health Insurance Portability And Accountability Act (HIPAA) Compliance, R Programming, Medical Privacy, Google Cloud Platform, Data Ethics, Data Science, Health Informatics, Data Processing, Electronic Medical Record, SQL, Data Access
Intermediate · Course · 1 - 4 Weeks