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.

Epic Games
Skills you'll gain: Unreal Engine, User Interface (UI), User Interface (UI) Design, UI Components, Game Design, Video Game Development, User Interface and User Experience (UI/UX) Design, Code Reusability, User Experience, Programming Principles, Mockups
Beginner · Course · 1 - 4 Weeks

Università di Napoli Federico II
Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Python Programming, Computer Programming, Scripting Languages, Scripting, Programming Principles, Data Management, Functional Design, Database Management, File Management, File I/O, Databases
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Django (Web Framework), Web Applications, Web Development, Expense Reports, Back-End Web Development, Expense Management, Application Development, Database Application, Data Visualization, Business Process Automation, Chart.js, Data Modeling, Business Logic, Development Environment, Data Security, GitHub, Javascript, Project Documentation, Git (Version Control System)
Intermediate · Guided Project · Less Than 2 Hours

LearnQuest
Skills you'll gain: Microsoft Azure, Big Data, Data Processing, Analytics, Data Pipelines, Databricks, Apache Spark, Data Analysis, Data Integration, Data Warehousing, Extract, Transform, Load, Real Time Data, Data Store, Data Transformation, Scheduling, Data Storage
Intermediate · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: AWS Identity and Access Management (IAM), Infrastructure as Code (IaC), Amazon Web Services, Containerization, Amazon Elastic Compute Cloud, Cloud-Native Computing, AWS CloudFormation, Amazon DynamoDB, Kubernetes, Operational Databases, API Gateway, Cloud Development, Amazon S3, Cloud Security, Event-Driven Programming, Continuous Integration, AWS Kinesis, Amazon CloudWatch, Virtual Machines, Virtualization and Virtual Machines
Beginner · Specialization · 1 - 3 Months

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Computer Architecture, Hardware Architecture, Microarchitecture, Computer Systems, Computational Logic, Hardware Design, Computer Hardware, Programming Principles, System Programming, Computer Literacy, Program Development, Data Storage, Memory Management
Build toward a degree
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Social Network Analysis, Network Analysis, Graph Theory, R (Software), Social Sciences, Statistical Analysis, R Programming, Statistical Software, Sociology, Network Model, Statistical Modeling, Statistical Hypothesis Testing, Statistical Methods, Dependency Analysis
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Statistical Modeling, Statistical Machine Learning, Data Science, Statistical Methods, Classification And Regression Tree (CART), Statistical Analysis, Model Evaluation, Regression Analysis, Predictive Modeling, R Programming, Statistical Inference, Logistic Regression, Model Training, Machine Learning, Classification Algorithms, Supervised Learning, Unsupervised Learning, Machine Learning Algorithms
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: AI Workflows, AI Orchestration, OpenAI API, LLM Application, OpenAI, Agentic Workflows, Model Context Protocol, Generative AI Agents, Agentic systems, Decision Intelligence, Tool Calling, Prompt Engineering, Prompt Patterns, ChatGPT, AI Integrations, Artificial Intelligence, Application Programming Interface (API), Large Language Modeling, Python Programming, Development Environment
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: PyTorch (Machine Learning Library), Convolutional Neural Networks, Fine-tuning, Transfer Learning, Model Evaluation, Image Analysis, Model Training, Computer Vision, Applied Machine Learning, Deep Learning, Python Programming
Intermediate · Guided Project · Less Than 2 Hours

Packt
Skills you'll gain: Spring Boot, Hibernate (Java), Spring Framework, Web Applications, Application Development, Web Development, Program Development, Restful API, Application Frameworks, Secure Coding, Bootstrap (Front-End Framework), Development Environment, Object-Relational Mapping, Model View Controller, UI Components, Software Development Tools, Authentications, User Interface (UI), Databases
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Scikit Learn (Machine Learning Library), Predictive Modeling, Regression Analysis, Machine Learning Algorithms, Applied Machine Learning, Predictive Analytics, Python Programming, Classification Algorithms, Model Training, Machine Learning, Data Analysis
Beginner · Guided Project · Less Than 2 Hours