Object Oriented Design courses can help you learn principles like encapsulation, inheritance, and polymorphism, along with design patterns such as Singleton and Factory. You can build skills in creating reusable code, improving software maintainability, and designing systems that are easier to understand and extend. Many courses introduce tools like UML for modeling, as well as programming languages such as Java and Python, which are commonly used to implement object-oriented concepts in real-world applications.

Cisco Learning and Certifications
Skills you'll gain: Open Shortest Path First (OSPF), Network Protocols
Beginner · Course · 1 - 3 Months

Fractal Analytics
Skills you'll gain: Responsible AI, Data Ethics, AI Security, Data Governance, AI Workflows, Data Pipelines, Data Transformation, Governance, Data Integrity, Data Quality, MLOps (Machine Learning Operations), Information Assurance, Risk Modeling, Metadata Management, Data Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Software Development Methodologies, Development Environment, Software Development, Application Programming Interface (API), Version Control, Software Design Patterns, JSON, Network Engineering, Software Development Tools, Restful API, Virtualization and Virtual Machines, Web Applications, TCP/IP, YAML, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Video Game Development, Game Design, Programming Principles, Scripting Languages, User Interface (UI), Event-Driven Programming, Animations, Debugging
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Development, Microsoft Azure, Virtual Machines, Cloud Management, Infrastructure As A Service (IaaS), Virtualization, Application Deployment, Linux Administration, Linux, Web Applications, Node.JS, Javascript, MongoDB
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Analysis Expressions (DAX), Power BI, Dashboard, Pivot Tables And Charts, Data Transformation, Data Visualization Software, Interactive Data Visualization, Data Modeling, Data Presentation, Data Manipulation, Business Intelligence, Microsoft Excel, Microsoft Power Platform, Report Writing, Data Cleansing
Intermediate · Course · 3 - 6 Months

EDUCBA
Skills you'll gain: Performance Tuning, Microsoft Azure, Database Administration, Scalability, Relational Databases, Microsoft SQL Servers, Database Architecture and Administration, Database Management, Database Systems, Operational Databases, Data Migration, Transact-SQL, Stored Procedure, Cloud Security, Cloud Deployment, Disaster Recovery, Virtual Machines
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Unreal Engine, Game Design, Video Game Development, Animation and Game Design, 3D Assets, Virtual Environment, Computer Graphics, User Interface (UI), Interactive Design, Scripting
Mixed · Course · 1 - 4 Weeks

Dartmouth College
Skills you'll gain: Simulation and Simulation Software, Digital Transformation, Systems Thinking, Complex Problem Solving, Operations Research, Predictive Analytics, Data-Driven Decision-Making, Verification And Validation, Process Optimization, Data Integration, Risk Management, Python Programming, Event-Driven Programming, Probability & Statistics, Performance Analysis
Intermediate · Course · 1 - 3 Months

Banco Interamericano de Desarrollo
Skills you'll gain: Financial Inclusion, FinTech, Digital Transformation, Mobile Banking, Product Design, Financial Services, Innovation, Banking, Data Analysis, Talent Management, Customer experience improvement, Needs Assessment, Emerging Technologies, Strategic Partnership
Beginner · Course · 1 - 4 Weeks
University of Glasgow
Skills you'll gain: Model Evaluation, Data Ethics, AI Security, Responsible AI, Healthcare Ethics, Machine Learning, Deep Learning, Information Privacy, Decision Support Systems, Health Informatics, Predictive Modeling, Artificial Intelligence, Human Centered Design, Data Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Cryptography, Encryption, Application Security, Threat Modeling, Cybersecurity, Secure Coding, Distributed Denial-Of-Service (DDoS) Attacks, Vulnerability Assessments
Beginner · Course · 1 - 4 Weeks