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.

Skills you'll gain: Version Control, Git (Version Control System), Restful API, ASP.NET, API Design, Application Programming Interface (API), API Testing, Software Versioning, Back-End Web Development, Authentications, Software Architecture, Cloud Deployment, .NET Framework, Database Development, Object-Relational Mapping, Web Development, Web Services, Microsoft Azure, Database Management, Web Frameworks
Intermediate · Specialization · 3 - 6 Months

DeepLearning.AI
Skills you'll gain: Data Storytelling, Web Scraping, Google Sheets, Data Visualization, Data Presentation, Statistical Visualization, Spreadsheet Software, Large Language Modeling, Tableau Software, Data Literacy, Dashboard, Pandas (Python Package), Time Series Analysis and Forecasting, Probability & Statistics, Extract, Transform, Load, Statistical Analysis, Statistics, Data Manipulation, Data Analysis, Descriptive Statistics
★ 4.7 (288) · Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: Model Evaluation, Sampling (Statistics), NumPy, Pandas (Python Package), Data Literacy, Feature Engineering, Statistical Visualization, Data Analysis, Predictive Modeling, Analytics, Regression Analysis, Predictive Analytics, Statistics, Analysis, Computational Thinking, Data Science, Business Intelligence, Applied Machine Learning, Data Quality, Machine Learning
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Penetration Testing, Security Testing, Exploitation techniques, Vulnerability Assessments, Cyber Security Assessment, Server Side, Test Tools, Cyber Security Strategy, SQL, Hypertext Markup Language (HTML), Databases, Query Languages, SQL Server Integration Services (SSIS), Ethical Standards And Conduct, Amazon S3
Intermediate · Course · 1 - 3 Months

Peking University
Skills you'll gain: Data Structures, Graph Theory, Computational Thinking, Theoretical Computer Science, Algorithms, Computer Programming, Computer Science, C (Programming Language), Data Storage, C++ (Programming Language)
★ 4.2 (251) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Electrical Power, Electric Power Systems, Electrical Systems, Control Systems, Electrical Substation, Electrical Equipment, Energy and Utilities, Electrical Safety, Plant Operations and Management, High Voltage, Machine Controls, Applied Mathematics, Power Electronics, Automation Engineering, Basic Electrical Systems, Electrical Engineering, Process Control, Mathematical Modeling, Matlab, Three-Phase
★ 4.5 (300) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Warehousing, Extract, Transform, Load, IBM DB2, Star Schema, PostgreSQL, Snowflake Schema, Data Mart, Data Architecture, Data Modeling, Database Design, Database Systems, Data Lakes, Data Integration, Query Languages, Data Validation, Data Cleansing, SQL, Data Quality
★ 4.5 (268) · Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Object Oriented Programming (OOP), File I/O, Data Structures, Python Programming, Programming Principles, Computer Programming, Computational Logic, Software Engineering, Performance Tuning, Web Development, Performance Testing, Web Development Tools, Debugging, Software Development
★ 4.6 (74) · Beginner · Specialization · 1 - 4 Weeks

Skills you'll gain: Excel Macros, Forecasting, Microsoft Copilot, Dashboard Creation, Microsoft Excel, Predictive Modeling, Workflow Management, UI Components, Visual Basic (Programming Language), User Interface (UI), Automation, Debugging, Interactive Data Visualization, Scenario Testing, Programming Principles
★ 4.5 (72) · Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: ASP.NET, Microsoft Copilot, C# (Programming Language), Application Programming Interface (API), Middleware, .NET Framework, API Design, Restful API, Back-End Web Development, Maintainability, Server Side, Programming Principles, JSON, Code Reusability, Software Architecture, Software Documentation, Secure Coding
★ 4.5 (81) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Ledgers (Accounting), Prompt Engineering, Tax Planning, Tax Management, Large Language Modeling, LLM Application, Auditing, Portfolio Risk, Portfolio Management, Tax Compliance, Generative AI, Cash Flow Forecasting, Fraud detection, Financial Forecasting, Financial Analysis, Responsible AI, Financial Auditing, Financial Data, Artificial Intelligence, Risk Management
★ 4.3 (292) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Data Persistence, Programming Principles, Code Reusability, Python Programming, File Management, Computer Science
★ 4.4 (152) · Intermediate · Course · 1 - 4 Weeks