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: React.js, UI Components, Front-End Web Development, Web Content Accessibility Guidelines, User Interface (UI), JavaScript Frameworks, Interaction Design, Web Development Tools, Event-Driven Programming, Web Frameworks, Cascading Style Sheets (CSS), Application Programming Interface (API)
Intermediate · Course · 3 - 6 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Distributed Computing, File Systems, Cloud Computing, Operating Systems, Transaction Processing, Network Security, Data Centers, Authorization (Computing), Apache Hadoop, Data Store, Authentications, Cryptography, NoSQL, Algorithms
Mixed · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Looker (Software), Big Data, SQL, Data Pipelines, Data Transformation, Extract, Transform, Load, Data Warehousing, Data Cleansing, Data Analysis, Data Visualization Software, Google Sheets, Google Cloud Platform, Data Import/Export
Intermediate · Course · 1 - 3 Months

Arizona State University
Skills you'll gain: Matplotlib, File I/O, NumPy, Plot (Graphics), Pandas (Python Package), Data Structures, Data Visualization Software, Data Analysis, Python Programming, Data Processing, Data Manipulation, Exploratory Data Analysis, Data Import/Export, Computer Programming
Beginner · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Java Programming, Java, Pedagogy, Debugging, Program Development, Object Oriented Programming (OOP), Computer Programming, Computational Thinking, Cultural Responsiveness, Digital pedagogy, Algorithms
Beginner · Course · 1 - 3 Months

National Academy of Sports Medicine
Skills you'll gain: Exercise Science, Kinesiology, Sports Medicine, Human Musculoskeletal System, Respiration, Physiology, Neurology, Mechanics, Injury Prevention, Anatomy, Medical Terminology, Nutrition and Diet
Beginner · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Ansible, YAML, Network Architecture, Network Administration, Infrastructure as Code (IaC), General Networking, Automation, Technical Documentation, Configuration Management, JSON, Python Programming
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Database Design, Continuous Integration, Restful API, Docker (Software), Model View Controller, Front-End Web Development, Databases, User Story, CI/CD, Java, Java Programming, Database Application, Application Programming Interface (API), HTML and CSS, Full-Stack Web Development, Spring Boot, Microservices, Back-End Web Development, Software Design Documents, Software Architecture
Advanced · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Continuous Delivery, Test Driven Development (TDD), Unit Testing, Continuous Deployment, Continuous Integration, Agile Methodology, Test Automation, Maintainability, Software Development, Development Testing, Mockups, Software Development Methodologies, Test Case, Software Testing, Code Review, Testability, Program Development, Debugging, Python Programming, Version Control
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Power BI, Dashboard, SQL, Microsoft SQL Servers, Data Security, Data Analysis, Data Visualization Software, Data Modeling, Data Management, Role-Based Access Control (RBAC)
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Analysis Expressions (DAX), Power BI, Pivot Tables And Charts, Microsoft Excel, R Programming, Alteryx, Dashboard, Statistical Programming, Data Transformation, Tableau Software, Data Cleansing, Data Presentation, Data Visualization Software, Interactive Data Visualization, Debugging, Data Visualization, Automation, Python Programming, Data Structures, Statistical Analysis
Intermediate · Specialization · 3 - 6 Months

Nanjing University
Skills you'll gain: Operating Systems, File Systems, Computer Systems, OS Process Management, Computer Science, System Programming, Data Storage, Computer Hardware, Program Development, Peripheral Devices, System Design and Implementation, Algorithms, Human Computer Interaction
Mixed · Course · 1 - 3 Months