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 Redux, React.js, Cascading Style Sheets (CSS), Web Components, JavaScript Frameworks, UI Components, HTML and CSS, Routing Protocols, Front-End Web Development, User Interface (UI), Web Frameworks, Maintainability, Authentications, Web Development Tools, Application Frameworks, Application Programming Interface (API), Web Design, Restful API, Javascript, Web Development
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Pseudocode, Responsive Web Design, Computational Thinking, LinkedIn, Cascading Style Sheets (CSS), Front-End Web Development, React.js, HTML and CSS, Debugging, Algorithms, Interviewing Skills, UI Components, Web Design and Development, Professional Development, Programming Principles, Jest (JavaScript Testing Framework), JavaScript Frameworks, Web Development Tools, Web Development, Software Development
Intermediate · Specialization · 1 - 3 Months

LearnQuest
Skills you'll gain: Azure Active Directory, Cloud Infrastructure, Microsoft Azure, Virtual Machines, Infrastructure As A Service (IaaS), Role-Based Access Control (RBAC), Active Directory, Infrastructure Security, Virtual Networking, Multi-Factor Authentication, Cloud Storage, Virtualization, Identity and Access Management, Cloud Computing, Data Storage, Application Performance Management, Network Security, Disaster Recovery
Advanced · Course · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Digital Signal Processing, Digital Communications, Communication Systems, Image Analysis, Telecommunications, Electrical Engineering, Electrical and Computer Engineering, Embedded Systems, Electronics, Algorithms
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Ggplot2, Plot (Graphics), Data Visualization Software, Exploratory Data Analysis, Data Presentation, Data Storytelling, Scatter Plots, Tidyverse (R Package), R Programming, Box Plots, Histogram, Animations, Data Manipulation
Mixed · Course · 1 - 3 Months
CertNexus
Skills you'll gain: Extract, Transform, Load, Data Migration, Data Manipulation, Data Preprocessing, Data Cleansing, Data Transformation, Data Warehousing, Data Integration, Data Collection, Data Mining, SQL
Intermediate · Course · 1 - 4 Weeks

Illinois Tech
Skills you'll gain: Database Design, Relational Databases, Database Systems, Database Management, Database Theory, Databases, Database Development, SQL, Database Management Systems, MySQL, Transaction Processing, Stored Procedure, Database Architecture and Administration, Data Modeling, Unified Modeling Language, Data Access, Data Integrity, Data Dictionary, Query Languages, Application Development
Build toward a degree
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Unsupervised Learning, Seaborn, Matplotlib, Predictive Modeling, Data Preprocessing, Supervised Learning, NumPy, Model Evaluation, Applied Machine Learning, Predictive Analytics, Dimensionality Reduction, PyTorch (Machine Learning Library), Deep Learning, Keras (Neural Network Library), Scatter Plots, Statistical Visualization, Python Programming, Data Science, Machine Learning, Data Analysis
Beginner · Specialization · 1 - 3 Months

Meta
Skills you'll gain: Restful API, SQL, React Native, Databases, Data Persistence, Mobile Development, Data Storage Technologies, JSON, Data Management, Network Model, Application Development, Authentications
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: TypeScript, Node.JS, Web Development Tools, React.js, Server Side, Javascript, Web Development, Data Validation, Web Design, Computer Programming
Intermediate · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: SQL, Generative AI, Data Visualization, Interactive Data Visualization, Data Analysis, Debugging, Exploratory Data Analysis, ChatGPT, Prompt Engineering, Databases, Large Language Modeling, Data Validation, Data Quality
Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Jupyter, Microservices, AWS SageMaker, Cloud Engineering, Command-Line Interface, Data Pipelines, CI/CD, Package and Software Management, Containerization, Applied Machine Learning, Python Programming, Test Automation, Algorithms
Intermediate · Course · 1 - 4 Weeks