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.

Coursera
Skills you'll gain: API Testing, Software Documentation, API Design, Application Programming Interface (API), Test Tools, Technical Documentation, Restful API, JSON, YAML, Software Design
Beginner · Guided Project · Less Than 2 Hours

Packt
Skills you'll gain: Incident Response, Threat Modeling, Vulnerability Scanning, Vulnerability Management, Vulnerability Assessments, Threat Detection, Risk Management, Cybersecurity, Computer Security Incident Management, Secure Coding, Cyber Security Assessment, Incident Management, Security Testing, Cyber Governance, Intrusion Detection and Prevention, Risk Management Framework, Cyber Threat Intelligence, Network Infrastructure, Network Security, Security Information and Event Management (SIEM)
Intermediate · Specialization · 1 - 4 Weeks

Skills you'll gain: Cloud Development, Microsoft Azure, Software Development, Cloud Deployment, Cloud Applications, Application Deployment, Design Strategies, Data Storage
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Database Administration, Database Architecture and Administration, Database Management, Apache Airflow, Operational Databases, PostgreSQL, MySQL, Data Warehousing, Data Pipelines, Extract, Transform, Load, Database Design, SQL, Data Architecture, Performance Tuning, Disaster Recovery, Data Security, Data Import/Export, Data Transformation
Advanced · Course · 1 - 3 Months

Skills you'll gain: Metasploit, Open Web Application Security Project (OWASP), Penetration Testing, Vulnerability Scanning, Exploitation techniques, Vulnerability Assessments, Brute-force attacks, Web Applications, Cybersecurity, Firewall, Network Security, Wireless Networks, Network Analysis, SQL
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: User Story, Requirements Elicitation, Requirements Management, Business Requirements, Requirements Analysis, Verification And Validation, Functional Specification, User Acceptance Testing (UAT), Stakeholder Communications, Process Mapping, Interviewing Skills, Active Listening
Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Google Gemini, Gemini, Test Script Development, Software Development Life Cycle, Google Cloud Platform, Development Testing, Application Development, Test Case, Query Languages, Debugging
Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: MITRE ATT&CK Framework, Penetration Testing, Brute-force attacks, Cyber Operations, Scripting, Cybersecurity, Vulnerability Assessments, Python Programming, Network Analysis, Automation
Mixed · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: OpenAI API, AI Workflows, LLM Application, ChatGPT, Application Programming Interface (API), Performance Testing, Artificial Intelligence, Prompt Engineering, Context Management, Application Development, Test Case
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Metadata Management, Data Sharing, Data Pipelines, Extract, Transform, Load, Google Cloud Platform, Data Migration, Data Warehousing, Data Infrastructure, Apache Airflow, Data Processing, Big Data, Data Management, Information Management, Cloud Storage, Apache Spark, Automation
Beginner · Course · 1 - 3 Months

Skills you'll gain: Data Loss Prevention, Security Testing, Network Security, Cryptography, IT Security Architecture, Security Controls, Cloud Security, Encryption, Data Security, Network Administration, Information Assurance, Cybersecurity, Identity and Access Management, Penetration Testing, Cloud Computing, Cyber Risk, Vulnerability Scanning, Authorization (Computing), Computer Security Incident Management, Information Privacy
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: React.js, Jest (JavaScript Testing Framework), JavaScript Frameworks, Web Components, Front-End Web Development, Unit Testing, UI Components, Ajax, Web Applications, Event-Driven Programming, Javascript, Software Testing
Intermediate · Course · 1 - 3 Months