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.

University of Leeds
Skills you'll gain: Exploratory Data Analysis, Statistical Methods, Statistical Modeling, R (Software), Data Collection, Statistical Inference, Probability, Data Analysis, Statistical Analysis, Probability Distribution, Simulations, Statistical Visualization, Descriptive Statistics, Sampling (Statistics), Data Visualization Software
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), JUnit, HTML and CSS, Test Automation, Software Testing, Test Script Development, Web Development, Software Quality Assurance, Continuous Integration, Java, Test Execution Engine, Object Oriented Programming (OOP), Debugging
Intermediate · Course · 1 - 3 Months

Skills you'll gain: OpenAI API, SQL, ChatGPT, Prompt Engineering, Pandas (Python Package), Natural Language Processing, Data Import/Export, Data Manipulation, Databases, Python Programming, Machine Learning, Software Engineering
Intermediate · Guided Project · Less Than 2 Hours
CertNexus
Skills you'll gain: Data Analysis, Data Preprocessing, Data Visualization, Statistical Analysis, Exploratory Data Analysis, Business Analytics, Analytical Skills, Data Transformation, Probability & Statistics, Descriptive Statistics, Histogram, Scatter Plots
Intermediate · Course · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Programming Principles, File I/O, Computer Programming, Matlab, Debugging, Integrated Development Environments, Linear Algebra, Software Development Tools, Control Systems, Mathematical Software, Computer Science, User Interface (UI), Data Import/Export, Data Structures
Beginner · Course · 1 - 3 Months

Skills you'll gain: PostgreSQL, Database Administration, Relational Databases, Database Design, Database Management, Database Architecture and Administration, SQL, Stored Procedure, Databases, Transaction Processing, Data Manipulation, Query Languages
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Tensorflow, Keras (Neural Network Library), Artificial Neural Networks, Deep Learning, Machine Learning Methods, Python Programming
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Statistical Inference, Regression Analysis, Logistic Regression, R Programming, Statistical Analysis, Statistical Modeling, R (Software), Predictive Modeling, Model Evaluation, Statistical Hypothesis Testing, Probability Distribution, Probability
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: API Testing, Software Documentation, API Design, Application Programming Interface (API), Test Tools, Technical Documentation, Restful API, JSON, YAML, Software Design
Beginner · Guided Project · Less Than 2 Hours

University of Leeds
Skills you'll gain: Software Development, Engineering Software, Software Development Methodologies, Data Ethics, Software Engineering, Computer Programming, Back-End Web Development
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), File I/O, Object Oriented Programming (OOP), Test Automation, Web Development Tools, Computer Programming, Scripting, Python Programming, Automation, Scripting Languages, Integrated Development Environments, Debugging
Beginner · Course · 1 - 3 Months

Infosec
Skills you'll gain: Prompt Engineering, ChatGPT, Open Web Application Security Project (OWASP), AI Security, Responsible AI, API Testing, Penetration Testing, OpenAI, OpenAI API, Exploitation techniques, Vulnerability Scanning, Generative AI, Large Language Modeling
Beginner · Course · 1 - 3 Months