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: JUnit, Unit Testing, IntelliJ IDEA, Apache Maven, Software Testing, Test Case, Java Programming, Integration Testing, Software Architecture
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Usability Testing, User Centered Design, User Experience Design, Responsive Web Design, Prototyping, Interaction Design, Software Documentation, Mockups, Wireframing, Design Software, User Interface (UI) Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Usability Testing, Figma (Design Software), Responsive Web Design, User Experience Design, Prototyping, Software Design Documents, Design Specifications, Mockups, User Interface (UI) Design, UI Components, User Flows, Animations
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cucumber (Software), Gherkin (Scripting Language), Behavior-Driven Development, JSON, Restful API, Apache Maven, Application Programming Interface (API), Test Tools, Test Case, Test Planning, JUnit, Test Engineering, Security Testing, Test Automation, Authentications, Test Data, Scalability, Software Testing, Java Programming, Java
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Server Side, Web Development, Web Scraping, Web Applications, Back-End Web Development, Integration Testing, Web Development Tools, Web Services, Extensible Markup Language (XML), Package and Software Management, Development Testing, Unit Testing, Scripting, Performance Tuning, Cross Platform Development, Hypertext Markup Language (HTML), Interoperability, Debugging
Mixed · Course · 1 - 4 Weeks
Johns Hopkins University
Skills you'll gain: Infectious Diseases, Diagnostic Tests, Epidemiology, Patient Evaluation, Microbiology, Clinical Laboratory Science, Medical Devices, Public Health and Disease Prevention, Public Health, Health Technology, Medical Science and Research, Patient Treatment, Molecular Biology, Innovation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: OSI Models, TCP/IP, Vulnerability Scanning, General Networking, Network Protocols, Cyber Security Assessment, Network Security, Network Administration, Vulnerability Assessments, Firewall, Network Analysis, Scripting, System Configuration
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Advertising Campaigns, Advertising, User Feedback, Marketing Materials, Online Advertising, Business Research, Marketing, Promotional Materials, Market Research, Branding
Intermediate · Guided Project · Less Than 2 Hours
Skills you'll gain: Statistical Hypothesis Testing, Statistical Methods, Sample Size Determination, Statistical Inference, Estimation, Statistics, Probability & Statistics, Sampling (Statistics), Statistical Analysis, Microsoft Excel, Excel Formulas, Data Analysis, Decision Making
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Bayesian Statistics, A/B Testing, Microsoft Excel, Statistical Modeling, Predictive Analytics, Statistical Methods, Data Analysis, Probability & Statistics, Decision Making, Health Informatics, Statistical Programming, Machine Learning, Markov Model
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: JavaScript Frameworks, Web Development Tools, Test Automation, Software Testing, Network Performance Management, Restful API
Advanced · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Statistical Hypothesis Testing, Statistical Methods, Probability & Statistics, Data Ethics, Statistical Analysis, Quantitative Research, Statistical Inference, Statistics, Sample Size Determination, Sampling (Statistics)
Build toward a degree
Intermediate · Course · 1 - 3 Months