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The City of Portland, Oregon

Auditor Mary Hull Caballero

Promoting open and accountable government

About us

Portland has had a City Auditor since 1868, and the position has been elected by voters since 1891. As the sixth elected official in Portland’s government, the Auditor is functionally independent of City Council and accountable only to the public. The mission of the Auditor’s Office is to promote open and accountable government by providing independent and impartial reviews, access to public information, and services for City government and the public.

The Auditor’s Office has a $10.2 million operating budget. Fifty-five employees carry out their work in eight divisions. Those primarily responsible for ensuring the City is accountable are Audit Services, Code Hearings Office, Independent Police Review and the Ombudsman. The divisions responsible for ensuring the City is transparent are Archives and Records Management; Assessments, Finance and Foreclosure, and Council Clerk/Contracts. Staff in Management Services oversee City elections and the lobbyist registration program in addition to providing support to all divisions in the Auditor’s Office.

City Auditor Mary Hull CaballeroMary Hull Caballero is the elected Auditor for the City of Portland, taking office in January 2015. Mary was re-elected in 2018, and begins her second term in January 2019. She previously worked as a performance auditor at Metro Regional Government in Portland and the Oregon Department of Transportation. Prior to entering the auditing field, Mary co-founded and managed a public policy leadership development organization and was a newspaper reporter. She holds a Master's Degree in Public Policy and Management from Carnegie Mellon University. She received her undergraduate degree in Communication from Lewis and Clark College. Mary is a Certified Internal Auditor and a Certified Government Auditing Professional.

Auditor's Advisory Council

Auditor’s Quarterly Calendars 


Management Team (in alphabetical order)

Jennifer Amiott joined the City Auditor's Office as General Counsel in 2018. She provides legal and policy advice to the Auditor and division managers on a broad range of issues related to performance auditing, complaint investigations, public records and meetings, lobbying regulations, and police accountability. Previously, Jennifer served as the Director of Legal Aid Services of Oregon's Native American Program. She holds an undergraduate degree from Miami University, a Master's Degree from Portland State University, and a J.D. from Lewis and Clark Law School. 

Toni Anderson was first introduced to the City of Portland when hired for a summer work position through the CETA training program. This led to being hired in 1976 to work in the neighborhood office for a volunteer board of her beloved North Portland. The two-person office worked out of the senior center and had its own mascot Sammy an orange tabby cat. Toni later worked for Bonneville Power but found her way back to the City in 1986 in the Auditor’s Office, where she worked her way up through the ranks to Council /Contracts Supervisor. If Toni could change one thing it would be to have an office cat or dog.

Diana Banning manages the Archives and Records Management Division and has served as the City Archivist since 1997. As the City's Archivist, she provides city-wide leadership on archives and records management issues, and oversees the Portland Archives and Records Center. Prior to her time with the City, she was the County Archivist for King County, Washington. 

She has a Master of Library Science degree from the University of Washington and is certified through the Academy of Certified Archivists.

Kari Guy has worked in Audit Services since 2007. Before joining the City, she spent 10 years with Washington State Senate Committee Services, both as a fiscal analyst to the Ways and Means Committee and as a policy analyst with various natural resources committees. Kari holds a Masters of Public Administration from the University of Washington and a bachelor's degree from Stanford University.

She is a Certified Government Auditing Professional, and is a member of the Institute of Internal Auditors and the Association of Local Government Auditors.

Chief Deputy Auditor Amanda Lamb

Amanda Lamb is the Chief Deputy Auditor, providing policy support for the Auditor’s priorities, managing large or multi-division initiatives, and supporting internal operations by supervising the Management Services Division. 

Prior to joining the Auditor's Office, Amanda worked on criminal justice policy at Multnomah County and was a performance auditor for local government and the State of Oregon. She holds a Bachelor's degree in Philosophy from Lewis and Clark College and a Master of Public Administration from Portland State.

Joshua McNeal IV assumed the role of Business Operations Manager in 2018. He provides administrative support and flexibility to multiple divisions as the Auditor’s Office continues to move toward independent responsibilities. Before joining the City of Portland, Joshua served as the Senior Business Services Manager at the City of Durham, North Carolina. Prior to that, he served as Finance Director for the City of Chester, South Carolina. Joshua holds a Master’s of Public Administration from Georgia Southern University and a Bachelor’s degree in Mass Communications from the University of South Carolina, Columbia. As a true southerner, the move to Portland is Joshua's first time residing outside of the Southeast region.

Helle Rode is the Chief Hearings Officer. Prior to joining the Auditor’s Office, Helle served as the Equal Opportunity Compliance Officer and Interim Co-Associate Director of the Affirmative Action and Equal Opportunity Department at Oregon Health and Sciences University. Helle practiced employment law for many years in both the public and private sectors, including as a partner at both Dunn Carney and Bullard Law and as a Senior Assistant Attorney General with the Oregon Department of Justice’s Labor and Employment Section. Helle has litigated and arbitrated cases in state and federal court and served as an arbitrator and mediator of disputes in litigation. She also served on the Oregon Appellate Court Mediation Panel and the Multnomah County Circuit Court Arbitrator Panel. 

IPR Director Constantin Severe

Constantin Severe is the director of Independent Police Review. He was born in Brooklyn, New York, and is the son of Haitian immigrants. He graduated from Andrews University in Berrien Springs, Michigan, with a bachelor’s degree in Political Economy. Constantin received his Juris Doctor from Vanderbilt University Law School in 2002. Prior to working for the City, he was a criminal defense attorney in the major felonies unit at the Metropolitan Public Defender’s office in Portland. He joined the Auditor’s Office in 2008 and became Director in June 2013. Constantin is an avid cyclist and music fan. His dream concert would be Ted Leo opening for a double bill of The Clash and The Jam.

Ombudsman Margie Sollinger

Margie Sollinger has served as City Ombudsman since 2012. Before joining the Auditor’s Office, she was a Visiting Associate Professor at Georgetown University Law Center’s Institute for Public Representation, where she practiced environmental, administrative and open government law. Prior to that, Margie clerked on the Maine Supreme Judicial Court and was a housing attorney at Bread for the City, a non-profit social and legal services organization in the District of Columbia. Margie received her undergraduate degree in biology and environmental studies from Carleton College and her law degree from the University of Minnesota Law School.