ETL testing courses can help you learn data extraction techniques, transformation processes, and loading verification methods. You can build skills in validating data integrity, creating test cases, and automating testing workflows. Many courses introduce tools like Apache Nifi, Talend, and Informatica, that support implementing ETL processes and ensuring data quality in various applications.

Skills you'll gain: Penetration Testing, Exploitation techniques, Scenario Testing, Brute-force attacks, Cybersecurity, Vulnerability Assessments, Linux, Command-Line Interface, Cryptography, File Management, Microsoft Windows, Scripting, Virtual Machines
Intermediate · Course · 1 - 3 Months

NIIT
Skills you'll gain: React.js, Front-End Web Development, Systems Development Life Cycle, Application Development, User Interface and User Experience (UI/UX) Design, UI Components, User Flows, Unit Testing, Data Validation, Javascript
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Gemini, Unit Testing, Integrated Development Environments, Software Documentation, Google Cloud Platform, Code Review, Software Development Tools, Application Development, Maintainability, Debugging
Beginner · Course · 1 - 4 Weeks

JetBrains
Skills you'll gain: Application Development, Generative AI Agents, Large Language Modeling, AI Enablement, Software Development Tools, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), IntelliJ IDEA, Generative AI, Code Review, Agentic systems, Integrated Development Environments, Software Development, Computer Programming, Debugging, Software Development Life Cycle
Beginner · Course · 1 - 3 Months

Skills you'll gain: Brute-force attacks, General Networking, Network Administration, Network Security, Penetration Testing, Wireless Networks, Exploitation techniques, Linux, Vulnerability Scanning, Linux Commands, Encryption, Network Analysis, Command-Line Interface, Virtual Machines
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Full-Stack Web Development, Jest (JavaScript Testing Framework), Application Deployment, Unit Testing, JavaScript Frameworks, Data Structures, Back-End Web Development, Restful API, Application Programming Interface (API), Development Environment, Javascript, Front-End Web Development
Beginner · Course · 1 - 3 Months

Skills you'll gain: JUnit, Restful API, Software Design, JSON, Software Testing
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Model Evaluation, Data Manipulation, Python Programming, Probability & Statistics, Applied Machine Learning, Pandas (Python Package), Data Science, Statistical Analysis, NumPy, Machine Learning, Probability Distribution
Beginner · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Authentications, Application Frameworks, Web Applications, Web Development, Test Script Development, Maintainability, Network Routing, Test Case, Unit Testing, Authorization (Computing), Identity and Access Management, Functional Testing, Integration Testing, Application Security, Configuration Management
Advanced · Course · 1 - 3 Months

Jordan University of Science and Technology
Skills you'll gain: Immunology, Public Health and Disease Prevention, Laboratory Testing, Diagnostic Tests, Public Health, Pathology, Infectious Diseases, Physiology, General Medicine, Microbiology, Medical Terminology, Cell Biology, Oncology, Molecular Biology
Beginner · Course · 1 - 3 Months

Edureka
Skills you'll gain: API Design, Application Programming Interface (API), Data Validation, Restful API, API Testing, Application Frameworks, Performance Tuning, Web Development, Software Versioning, Django (Web Framework), Software Documentation, Middleware, Node.JS, Scalability, JSON, Spring Boot, Test Automation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Dataflow, Data Pipelines, Apache Kafka, Real Time Data, Google Cloud Platform, Data Integration, Data Processing, Extract, Transform, Load, Big Data, Data Transformation, Analytics, Data Storage
Intermediate · Course · 1 - 4 Weeks