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.

Skills you'll gain: Data Pipelines, Data Lakes, Apache Airflow, Data Security, Data Transformation, Apache Spark, Disaster Recovery, Cloud Infrastructure, Infrastructure as Code (IaC), Database Architecture and Administration, PySpark, Performance Tuning, Terraform, Data Warehousing, Extract, Transform, Load, Data Architecture, Data Integration, Cloud Computing, SQL, Data Governance
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Apple iOS, Swift Programming, UI Components, Animations, Apple Xcode, User Interface (UI), Mobile Development, User Interface (UI) Design, Interactive Design, Motion Graphics, Development Environment, Debugging
Intermediate · Course · 3 - 6 Months

Coursera
Skills you'll gain: Statistical Inference, Statistical Hypothesis Testing, Business Analytics, Sample Size Determination, Statistical Analysis, Data Analysis, Statistical Methods, A/B Testing, Statistical Software, Estimation, Data-Driven Decision-Making, Business Communication
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AI Orchestration, AI Workflows, LangChain, Agentic Workflows, Tool Calling, LangGraph, LLM Application, Agentic systems, Generative AI Agents, Responsible AI, Retrieval-Augmented Generation, Artificial Intelligence and Machine Learning (AI/ML), Generative AI, Application Design, Prompt Engineering, Large Language Modeling, Context Management, Software Design Patterns, Software Development, Python Programming
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Apache Cassandra, Distributed Computing, NoSQL, Database Design, Query Languages, Performance Tuning, Scalability, Data Integrity, Data Management, Java
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Unified Modeling Language, File I/O, Visual Basic (Programming Language), Database Management, System Software, Databases, Relational Databases, Algorithms, Computer Architecture, Network Security, Computer Hardware, SQL, Computer Science, Development Environment, Data Structures, Object Oriented Programming (OOP), Object Oriented Design, Computer Programming, Microsoft Development Tools, Programming Principles
Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Data Preprocessing, Data Wrangling, Data Cleansing, Data Transformation, Data Manipulation, JSON, Pandas (Python Package), Data Quality, Extract, Transform, Load, Data Mapping, Scripting, Data Validation, Data Maintenance, Data Pipelines, Time Series Analysis and Forecasting, Data Integrity, Anomaly Detection, Reconciliation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Extensible Languages and XML, White-Box Testing, Test Script Development, Scenario Testing
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Test Automation, Test Case, Software Testing, Automation, Continuous Integration, Acceptance Testing, Test Execution Engine, Integration Testing, Test Planning, Mobile Development
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Variance Analysis, Cost Accounting, Operating Cost, Management Accounting, Profit and Loss (P&L) Management, Cost Estimation, Operational Analysis, Financial Statement Analysis, Resource Allocation, Cost Management, Performance Analysis, Decision Making
Beginner · Course · 1 - 4 Weeks

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Data Validation, Object Oriented Programming (OOP), Verification And Validation, Debugging, Programming Principles, Maintainability, Distributed Computing, Business Logic, Software Testing, Unit Testing, Data Structures, Data Modeling
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Threat Modeling, Application Security, Open Web Application Security Project (OWASP), Secure Coding, Authentications, OAuth, Development Testing, Software Development Life Cycle, Unified Modeling Language, Authorization (Computing), Single Sign-On (SSO), Software Development, Security Software, Vulnerability Assessments, Data Validation, Cyber Security Assessment, Cyber Security Strategy, Cybersecurity, Role-Based Access Control (RBAC)
Intermediate · Course · 3 - 6 Months