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.

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Data Structures, Algorithms, Programming Principles, Functional Design, Java Programming, Other Programming Languages, Performance Tuning, Performance Testing
★ 4.4 (1.8K) · Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Prompt Patterns, Prompt Engineering Tools, LangChain, Generative AI, Generative Model Architectures, Embeddings, AI Workflows, Model Optimization, Serverless Computing, Agentic Workflows, Systems Development Life Cycle, AI Orchestration, Cloud Development, Development Testing, AI Personalization, AI Enablement, AI Integrations, Application Development, AI Security, Tool Calling
★ 4.2 (55) · Intermediate · Specialization · 3 - 6 Months

University of California, Irvine
Skills you'll gain: Blood Collection, Specimen Collection, Specimen Processing, Specimen Preparation, Urinalysis, Laboratory Testing, Cell Cultures, Cell Biology, Analytical Testing, Laboratory Research, Molecular, Cellular, and Microbiology, Biochemistry, Molecular Biology, Biomedical Technology, Laboratory Equipment, Biology
★ 4.8 (356) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: COBOL (Programming Language), z/OS, Mainframe Computing, IBM DB2, Debugging, Mainframe Technologies, Middleware, Job Control Language (JCL), Software Development, Performance Tuning, Development Testing, Maintainability, Microsoft Visual Studio, IBM WebSphere MQ, Development Environment, Program Development, Programming Principles, Computer Programming, Code Reusability, Data Modeling
★ 4.6 (192) · Intermediate · Course · 3 - 6 Months

Technion - Israel Institute of Technology
Skills you'll gain: Business Planning, Value Propositions, Entrepreneurship, Ideation, Business Strategy, New Product Development, Commercialization, Risk Management, Product Development, Innovation, Communication, Persuasive Communication, Sales Presentations, Feasibility Studies, Verification And Validation, Decision Making, Interviewing Skills
★ 4.8 (783) · Mixed · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Continuous Delivery, Test Driven Development (TDD), Unit Testing, Continuous Deployment, Continuous Integration, Test Script Development, Program Development, CI/CD, Agile Methodology, Test Automation, Development Testing, Mockups, Test Case, Agile Software Development, Software Testing, Debugging, Software Development, Python Programming, Version Control, Requirements Analysis
★ 4 (83) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Linux Administration, Bash (Scripting Language), Network Monitoring, Cyber Security Assessment, System Configuration, Digital Forensics
★ 4.7 (66) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Generative AI, Agentic Workflows, AI Workflows, Generative AI Agents, AI Orchestration, Retrieval-Augmented Generation, Generative Model Architectures, Microsoft Azure, Agentic systems, Artificial Intelligence and Machine Learning (AI/ML), AI Security, LLM Application, Application Deployment, Responsible AI, ChatGPT, Artificial Intelligence, Artificial Neural Networks, Deep Learning, Machine Learning
★ 3.7 (55) · Intermediate · Specialization · 3 - 6 Months

University of California, Davis
Skills you'll gain: SQL, Data Quality, Complex Problem Solving, Data Visualization, JSON, Query Languages, Business Metrics, Business Reporting, Data Validation, Data Cleansing, Data Presentation, Forecasting, Data Analysis, Predictive Analytics, Data Manipulation
★ 4 (27) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Biostatistics, Bioinformatics, Exploratory Data Analysis, Statistical Analysis, Statistical Methods, Statistical Hypothesis Testing, Statistical Modeling, Statistics, R Programming, Probability & Statistics, Data Preprocessing, Data Analysis, Statistical Inference, Regression Analysis, Data Pipelines, Logistic Regression, Analysis
★ 4.2 (383) · Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Open Web Application Security Project (OWASP), Penetration Testing, Metasploit, Security Testing, Security Strategy, Vulnerability Assessments, Cyber Security Assessment, Security Management, Vulnerability Scanning, Cyber Threat Intelligence, Information Systems Security, Exploitation techniques, Security Controls, Data Sharing
★ 4.7 (268) · Beginner · Course · 1 - 3 Months

Macquarie University
Skills you'll gain: Data Visualization, Statistical Inference, Statistical Hypothesis Testing, Data-Driven Decision-Making, Descriptive Statistics, Statistical Analysis, Statistical Methods, Sampling (Statistics), Excel Formulas, Spreadsheet Software, Box Plots, Time Series Analysis and Forecasting, Data Analysis Software, Statistical Modeling, Advanced Analytics, Financial Forecasting, Probability Distribution, Descriptive Analytics, Variance Analysis, Predictive Modeling
★ 4.7 (138) · Beginner · Specialization · 3 - 6 Months