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.

Johns Hopkins University
Skills you'll gain: Research Design, Science and Research, Laboratory Research, Research Methodologies, Statistical Analysis, Data Collection, Data Analysis Software, Neurology, Psychology, Physiology, Magnetic Resonance Imaging, Electrophysiology, Image Analysis, Medical Equipment and Technology, Human Learning, Medical Imaging, Data Visualization Software, Functional Behavior Assessment, Statistical Inference
Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Security Testing, Threat Modeling, Exploitation techniques, Application Security, Vulnerability Assessments, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Systems Engineering, Aerospace Basic Quality System Standards, Global Positioning Systems, Engineering Design Process, Control Systems, Systems Integration, Engineering, Human Factors, System Testing, Communication Systems, Robotics, Automation, Structural Engineering, Thermal Management, Physical Science, Electric Power Systems, Environmental Monitoring, Mechanics
Beginner · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Mental Health, Cultural Diversity, Health Disparities, Health Assessment, Social Determinants Of Health, Gerontology, Stress Management, Human Development, Positive Airway Pressure (CPAP/BiPAP), Patient Treatment, Diagnostic Tests, Mental Health Diseases and Disorders, Physiology, Child Development, Chronic Diseases, Mindfulness, Biology
Beginner · Course · 1 - 3 Months

Skills you'll gain: Databricks, CI/CD, Microsoft Azure, Data Architecture, Integration Testing, Data Pipelines, Data Integration, Data Security, Automation, Data Storage, Development Testing
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Social Network Analysis, Network Analysis, Graph Theory, Social Sciences, Statistical Analysis, R Programming, Sociology, Statistical Modeling, Statistical Hypothesis Testing
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Spring Boot, Configuration Management, API Gateway, JUnit, Java Programming, Java, Application Design, Unit Testing, Middleware, Service Oriented Architecture, Software Design Patterns, Authentications
Advanced · Course · 1 - 4 Weeks

Arizona State University
Skills you'll gain: Electrical Systems, Basic Electrical Systems, Manufacturing and Production, Manufacturing Processes, Production Process, Energy and Utilities, Thermal Management, Sustainable Technologies, Safety Standards, Materials science, Quality Assurance, Performance Testing, Chemistry
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Penetration Testing, Linux Commands, Command-Line Interface, Linux, Cybersecurity, Operating System Administration, Operating Systems, Windows PowerShell, Unix Commands, Microsoft Windows, Computer Systems, Mac OS
Mixed · Course · 1 - 4 Weeks

Arizona State University
Skills you'll gain: Instructional and Curriculum Design, Instructional Strategies, Differentiated Instruction, English Language, Student Engagement, Language Learning, Cultural Sensitivity
Mixed · Course · 1 - 3 Months

Skills you'll gain: Pseudocode, Responsive Web Design, Computational Thinking, LinkedIn, Cascading Style Sheets (CSS), Front-End Web Development, React.js, HTML and CSS, Debugging, Algorithms, Interviewing Skills, UI Components, Web Design and Development, Professional Development, Programming Principles, Jest (JavaScript Testing Framework), JavaScript Frameworks, Web Development Tools, Web Development, Software Development
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Regression Analysis, Microsoft Excel, Statistical Hypothesis Testing, Business Analytics, Data-Driven Decision-Making, Data Visualization, Business Analysis, Statistical Analysis, Analytics, Data Analysis, Correlation Analysis, Case Studies, Probability & Statistics, Variance Analysis, Forecasting, Data Manipulation
Beginner · Course · 1 - 4 Weeks