An informatics nurse is a medical professional who uses computers and patient data to optimize outcomes and workflow in a medical environment. These specialized nursing professionals work with computer provider order entry (CPOE) and electronic medical records (EMRs) to collect data, interpret results, and identify relationships. EMRs include test results, notes from nurses, and information on medications given to patients. As an informatics nurse, you also help develop evidence-based policies and procedures for organizations, and may serve as an educator, researcher, and even software engineer.