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.

Novartis
Skills you'll gain: Drug Development, Pharmaceuticals, Pre-Clinical Development, Pharmacology, Biochemical Assays, Laboratory Research, Biochemistry, Verification And Validation, Chemistry, Molecular Biology
★ 4.9 (39) · Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Front-End Web Development, Web Design
★ 4.9 (27) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Model Evaluation, MLOps (Machine Learning Operations), Regression Testing, Kubernetes, Docker (Software), Feature Engineering, Containerization, Software Documentation, Data Pipelines, Git (Version Control System), Apache Airflow, Technical Documentation, Microservices, CI/CD, Unit Testing, API Design, Decision Intelligence, Performance Metric, Python Programming, Version Control
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Microservices, Cloud-Native Computing, Google Cloud Platform, Cloud Applications, Software Architecture, Cloud Development, Event-Driven Programming, Cloud-Based Integration, Serverless Computing, Service Oriented Architecture
★ 4.6 (10) · Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: AI Orchestration, AI Workflows, CrewAI, LangGraph, Agentic Workflows, LLM Application, LangChain, Large Language Modeling, Agentic systems, Generative AI Agents, AI Integrations, Application Deployment, Artificial Intelligence and Machine Learning (AI/ML), Software Architecture, Systems Architecture, Context Management, API Design, Software Design, Data Validation, Memory Management
★ 4.1 (7) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Web Design and Development, Cascading Style Sheets (CSS), Front-End Web Development, Application Deployment
★ 4.7 (22) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Simple Object Access Protocol (SOAP), Web Services, Extensible Markup Language (XML), Java, Web Applications
★ 4.1 (13) · Beginner · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Digital Signal Processing, Musical Composition, Electronic Hardware, Music, Electronic Components, Electronics, Music Theory, Digital Communications, Hardware Design, Patch Management, Embedded Systems, System Configuration, Algorithms, Performance Tuning, Music Performance, Dataflow, Data Sharing, Creative Design, Programming Principles, Other Programming Languages
★ 4.7 (59) · Beginner · Specialization · 1 - 3 Months

LearnKartS
Skills you'll gain: Ajax, Javascript, Object Oriented Programming (OOP), JavaScript Frameworks, Frontend Integration, Application Programming Interface (API), JSON, Front-End Web Development, Web Development, Full-Stack Web Development, Web Applications, Frontend Performance, Web Development Tools, Object Oriented Design, Application Development, Build Tools, Program Development, Code Reusability, Debugging, Development Environment
Beginner · Specialization · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Scalability, Distributed Computing, Dataflow, Event-Driven Programming, Microservices, System Design and Implementation, Software Architecture, Data Pipelines, Software Design Patterns, Software Design, Functional Design, Cloud Computing
★ 3.9 (31) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Financial Modeling, Variance Analysis, Key Performance Indicators (KPIs), Bookkeeping, Financial Forecasting, Revenue Forecasting, Budget Management, Financial Statement Analysis, Business Reporting, Performance Reporting, Financial Auditing, Capital Budgeting, Financial Controls, Financial Reporting, Operating Budget, Financial Analysis, Report Writing, Process Improvement, Banking Services, Financial Data
★ 4.2 (6) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Apache Cassandra, NoSQL, Databases, Database Management Systems, Application Deployment, Database Architecture and Administration, Database Design, Query Languages, Data Architecture, Database Management, Data Storage, System Monitoring, Data Maintenance, Distributed Computing, Data Modeling, Data Security, Scalability
Beginner · Course · 1 - 4 Weeks