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.

The University of Chicago
Skills you'll gain: Software-Defined Networking, Virtual Networking, Software-Defined Data Center (SDDC), Computer Networking, Virtualization, Network Architecture, Network Administration, Network Switches, Network Routing, Network Security, Network Protocols, Hardware Architecture, Application Programming Interface (API), Verification And Validation
★ 4.5 (293) · Mixed · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Responsive Web Design, Usability, Object Oriented Design, Version Control, User Experience Design, Design Thinking, User Centered Design, Web Design and Development, Web Content Accessibility Guidelines, .NET Framework, Microsoft Visual Studio, Authorization (Computing), AI Integrations, Application Security, Computational Thinking, User Interface (UI) Design, Web Components, Pseudocode, Microsoft Development Tools, Javascript
★ 4.6 (283) · Beginner · Professional Certificate · 3 - 6 Months
University of Washington
Skills you'll gain: Big Data, Relational Databases, Database Systems, Dataflow, Databases, Data Science, Database Theory, Data Manipulation, Data Store, Data Processing, Database Management Systems, NoSQL, Apache Spark, Distributed Computing, Apache Hadoop, SQL, Data Analysis, Query Languages, Cloud Computing, Python Programming
★ 4.3 (773) · Mixed · Course · 1 - 3 Months

University of Toronto
Skills you'll gain: Global Positioning Systems, Estimation, Robotics, Mathematical Modeling, Applied Mathematics, Linear Algebra
★ 4.7 (842) · Advanced · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Statistical Inference, Statistical Modeling, Statistical Hypothesis Testing, Regression Analysis, R Programming, Data Ethics, Statistical Analysis, Experimentation, Research Design, Statistical Methods, Data Analysis, R (Software), Statistical Programming, Predictive Modeling, Data Science, Predictive Analytics, Probability & Statistics, General Science and Research, Correlation Analysis, Quantitative Research
★ 4.2 (69) · Intermediate · Specialization · 3 - 6 Months

Microsoft
Skills you'll gain: Issue Tracking, Browser Compatibility, Regression Testing, Test Tools, Software Testing, Test Case, User Acceptance Testing (UAT), Usability Testing, Usability, Test Execution Engine, Verification And Validation, Software Quality Assurance, Acceptance Testing, Jira (Software), Functional Testing, Web Content Accessibility Guidelines, Test Planning, Software Development Life Cycle, Quality Assurance, Technical Writing
Beginner · Course · 1 - 3 Months
University of Michigan
Skills you'll gain: Database Design, SQL, Relational Databases, PostgreSQL, Database Systems, Database Theory, Database Management, Data Modeling, Databases, Database Management Systems, Query Languages, Data Integrity
★ 4.8 (1.1K) · Intermediate · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Java, Object Oriented Programming (OOP), Java Programming, Object Oriented Design, Android Development, Android Studio, Mobile Development, Memory Management, Computer Programming, Programming Principles, Code Reusability, Integrated Development Environments, Computational Logic, Development Environment
★ 4.7 (1.5K) · Mixed · Course · 1 - 4 Weeks

Amazon Web Services
Skills you'll gain: Amazon Web Services, Web Applications, Cloud Services, Amazon Elastic Compute Cloud, Cloud Solutions, Information Technology, Cloud Computing, Public Cloud, Network Protocols, IT Infrastructure, Computer Systems, Amazon S3, Web Development, General Networking, Network Security, Web Servers, Operating Systems, Servers, Data Analysis, Project Management
★ 4.8 (539) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Agentic Workflows, Google Gemini, Google Cloud Platform, Generative AI Agents, Model Context Protocol, AI Orchestration, LLM Application, Agentic systems, Vector Databases, AI Integrations, Model Deployment, Generative AI, Tool Calling, Cloud Deployment, SQL, Databases, Retrieval-Augmented Generation, Embeddings, Application Deployment, Prototyping
★ 3.4 (20) · Advanced · Specialization · 3 - 6 Months

Skills you'll gain: API Gateway, OAuth, Restful API, API Design, Application Programming Interface (API), Cloud API, Application Deployment, Application Security, Continuous Deployment, AI Integrations, Cloud Deployment, LLM Application, Authentications, Data Loss Prevention, Web Services, AI Security, Data Security, Google Cloud Platform, CI/CD, AI Workflows
★ 4.7 (2.9K) · Intermediate · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: Prompt Engineering, Anthropic Claude, Prompt Patterns, Responsible AI, OpenAI API, AI Integrations, Cloud Deployment, Cloud Applications, Cloud Development, LLM Application, OpenAI, HTML and CSS, Cloud API, Hypertext Markup Language (HTML), ChatGPT, Application Deployment, Mobile Development, API Gateway, Debugging, Artificial Intelligence
★ 4.6 (471) · Intermediate · Specialization · 3 - 6 Months