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.

Duke University
Skills you'll gain: Statistical Inference, Statistical Hypothesis Testing, Statistical Reporting, Statistical Analysis, Statistics, Data Analysis, Probability & Statistics, Statistical Methods, Data Analysis Software, Statistical Software, R Programming, Sampling (Statistics), Probability Distribution
Beginner · Course · 1 - 3 Months

Skills you'll gain: Software Development Methodologies, Development Environment, Software Development, Application Programming Interface (API), Version Control, Software Design Patterns, JSON, Software Design, Network Engineering, Restful API, Virtualization and Virtual Machines, Web Applications, TCP/IP, YAML, Extensible Markup Language (XML), Authentications
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Responsive Web Design, HTML and CSS, Typography, Cascading Style Sheets (CSS), UI Components, Web Design, User Interface (UI) Design, User Interface and User Experience (UI/UX) Design, Browser Compatibility, User Interface (UI), Usability, Interaction Design, Hypertext Markup Language (HTML), Web Design and Development, Web Content Accessibility Guidelines, Front-End Web Development, Animations, Web Development, Web Development Tools
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Containerization, Docker (Software), Microservices, Authentications, OAuth, Integration Testing, Event-Driven Programming, Secure Coding, Data Migration, Application Programming Interface (API), Software Architecture, Software Design Patterns, Scalability, Authorization (Computing), Systems Integration, Transaction Processing
Intermediate · Course · 1 - 3 Months

University of Pittsburgh
Skills you'll gain: Data Storytelling, Interactive Data Visualization, Data Presentation, Plot (Graphics), Data Visualization Software, Data Visualization, Tableau Software, Spatial Analysis, Visualization (Computer Graphics), Statistical Visualization, Network Model, Dashboard, Matplotlib, Infographics, Heat Maps, Seaborn, Geospatial Information and Technology, Time Series Analysis and Forecasting, Network Analysis, Geospatial Mapping
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Server Side, Restful API, API Design, Database Management, Back-End Web Development, Databases, Database Systems, Node.JS, Application Programming Interface (API), Full-Stack Web Development, Authentications, Web Applications, JavaScript Frameworks, Web Development, Web Servers, Authorization (Computing), NoSQL, MongoDB, Servers, Javascript
Intermediate · Course · 1 - 4 Weeks

Corporate Finance Institute
Skills you'll gain: Dashboard, Tableau Software, Data Visualization Software, Exploratory Data Analysis, SQL, Data Analysis, Data Manipulation
Advanced · Course · 1 - 3 Months

Skills you'll gain: C# (Programming Language)
Intermediate · Course · 1 - 3 Months

Universidad de los Andes
Skills you'll gain: Augmented and Virtual Reality (AR/VR), Augmented Reality, Virtual Reality, Unity Engine, Virtual Environment, Cross Platform Development, 3D Assets, C# (Programming Language), User Interface (UI), Data Structures, Game Design, Event-Driven Programming, Scripting, Animations
Beginner · Course · 1 - 3 Months

Skills you'll gain: Forecasting, Statistical Modeling, Machine Learning Methods, Feature Engineering, Data Visualization Software
Intermediate · Course · 1 - 3 Months
Skills you'll gain: Technical Communication, Technical Product Management, Program Evaluation, Performance Metric, Data Analysis, Agile Methodology, Project Management, Analytics, Stakeholder Communications, Communication, Data-Driven Decision-Making, Machine Learning, Large Language Modeling, R Programming, Data Visualization
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Docker (Software), Integration Testing, Object-Relational Mapping, Secure Coding, Database Design, Solution Architecture, Enterprise Architecture, Authorization (Computing), Systems Integration, Database Development, Data Validation, Transaction Processing
Intermediate · Specialization · 3 - 6 Months