Staff

Michael Dean began his career in 1996, shortly after the establishment of the Internal Audit Department. With over 25 years of experience in Internal Audit, Michael is the Senior Audit Manager leading the Internal Control Audits team. Michael has performed audits, reviews, and consultation engagements in most County departments throughout his career. Michael is a Certified Public Accountant, a Certified Internal Auditor, Certified Information Systems Auditor and holds a Bachelor of Arts degree in Accounting from California State University, Long Beach.

Aggie Alonso is an experienced executive with over 25 years of auditing experience. Aggie began his career in 1998 with the Los Angeles County Auditor-Controller’s Audit Division where he worked his way up from an Accountant-Auditor to the Division Chief of the Countywide Contract Monitoring. Aggie was responsible for managing approximately 40 professional auditors that primarily conducted fiscal, contract compliance, and other special reviews of County social service and health service contractors, and developed and oversaw the award winning Contractor Alert Reporting Database. Aggie currently serves as the Internal Audit Director and Chief Audit Executive for Orange County, the sixth largest County by population in the United States, with a budget totaling over $9 billion and employees totaling over 18,000. Aggie is responsible for managing Orange County’s internal audit function, whose primary objectives include developing and implementing risk-based audit plans focused on internal controls and information technology, and advising County management on appropriate internal controls, operational efficiency and effectiveness, and areas for process improvement. Aggie is a Certified Public Accountant, a Certified Internal Auditor, and holds a Certification of Risk Management Assurance from the Institute of Internal Auditors and a Bachelor of Arts degree in Accounting from California State University, Fullerton.