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About Us and Careers

Auditor O’Brien is proud of a skilled and dedicated staff, specialized in their fields of auditing, law, and communications.

Certified Staff: 41 members of staff hold advanced degrees, certifications or law degrees – including, but not limited to, Certified Public Accountants, Internal Auditors, Fraud Examiners, and Information System Auditors.
Advanced Technology: Our team utilizes the latest technology and efforts to maximize results and transparency.
Clear Communication: Auditor O'Brien promised open communication and accessibility during this campaign and the office is using multiple channels to extend the messaging and results of completed work.

Auditor Timothy M. O'Brien

Denver’s Auditor, Timothy M. O’Brien, CPA, has more than 40 years of auditing and accounting experience. Auditor O’Brien strives to bring greater clarity, transparency, and accountability to Denver’s City government for its residents.

Careers

We are committed to attract, recruit, and retain the highest quality people, and provide opportunities for professional growth and advancement. If you would like to join our team, please take a look at the current openings and requests for proposals.

Contact Our Office

Contact the Auditor's Office and its division Denver Labor for general questions, wage-specific complaints, and other specific comments or suggestions.

Management Staff

Management Services

Valerie Walling
Deputy Auditor
Valerie.Walling@denvergov.org
720-913-5059

Matthew Fritz-Mauer
Executive Director of Denver Labor
Matthew.Fritz-Mauer@denvergov.org
720-913-5018

Tayler Overschmidt
Director of Communications
Tayler.Overschmidt@denvergov.org
720-913-5033
Please contact Tayler Overschmidt for any media requests

Cyndi Lubrano
Business Manager
Cyndi.Lubrano@denvergov.org
720-913-5038

Ranea Taylor
Agency HR Manager
Au bra nea.Taylor@denvergov.org
720-913-5006

Amy Overzet
Executive Assistant III
Amy.Overzet@denvergov.org
720-913-5010

Audit Services and Denver Labor Staff

Audit Services Division

Balnyte, Vilma
Audit Manager
vilma.balntye@denvergov.org
720-913-5079

Barnes, Amy
Audit Manager
Amy.Barnes@denvergov.org
720-913-5086

Bennet, Siobhan
Associate Auditor
Siobhan.Bennett@denvergov.org
720-913-5027

Beverlin, Katie
Senior Auditor
Katie.Beverlin@denvergov.org
720-913-5201

Burger, Heather
Audit Analytics Senior
Heather.Burger@denvergov.org
720-913-5103

Casassa, Caitlin
Senior Auditor
Caitlin.Casassa@denvergov.org
720-913-5088

Castillo, Xavier
Human Resources Intern
Xavier.castillo@denvergov.org

Dachelet, Karole
Audit Manager
Karole.Dachelet@denvergov.org
720-913-5028

Durant, Maria
Senior Auditor
maria.durant@denvergov.org
720-913-5077

Edwards, Danielle
Associate Auditor
Danielle.Edwards@denvergov.org
720-913-5128

Emirkhanian, Daniel
Senior Auditor
Daniel.Emirkhanian@denvergov.org
720-913-5007

Eppstein, Kharis
Audit Manager
kharis.eppstein@denvergov.org
720-913-5096

Farol, Robert
Information Systems Audit Senior
robert.farol@denvergov.org
720-913-5078

Faussone, Tyson
Lead Auditor
Tyson.Faussone@denvergov.org
720-913-5102

Friday, Catherine
Senior Auditor
Catherine.Friday@denvergov.org

Gallaher, Sam
Audit Analytics Manager
samuel.gallaher@denvergov.org
720-913-5071

Gomez Jr, Juan
Associate Auditor
Juan.GomezJr@denvergov.org
720-913-5141

Halvorson, Carl
Lead Auditor
carl.halvorson@denvergov.org
720-913-5071

Hancock, Dave
Information Systems Audit Senior
david.hancock@denvergov.org
720-913-5059

Hansen, Anna
Lead Auditor
anna.hansen@denvergov.org
720-913-5064

Hernon, Nicholas
Data Analytics Specialist
Nicholas.Hernon@denvergov.org
720-913-5087

Horne, Mollie
Audit Committee Coordinator
mollie.horne@denvergov.org

Houston, Melinda
Associate Auditor
Melinda.Houston@denvergov.org

Iddriss, Munir ("Jay")
Information Systems Audit Manager
Munir.iddriss@denvergov.org

Jimroglou, Nick
Information Systems Audit Lead
nicholas.jimroglou@denvergov.org
720-913-5074

Jusu, Francis
Associate Auditor
Francis.Jusu@denvergov.org

Keller, Ron
Senior Auditor
ronald.keller@denvergov.org
720-913-5032

Kietlinski, Natalia
Associate Auditor
natalia.kietlinski@denvergov.org
720-913-5052

Mann, Juliane
Lead Auditor
Juliane.Mann@denvergov.org
720-913-5005

McCormack, Kristin
Lead Auditor
Kristin.McCormack@denvergov.org
720-913-5101

McKenzie, Zachary
Senior Auditor
zachary .mckenzie@denvergov.org
720-913-5047

Montano, Sonia
Audit Senior Manager
sonia.montano@denvergov.org
720-913-5157

Monk, Jordon
Associate Auditor
Jordon.Monk@denvergov.org

Moutry, Joshua
Internal Audit Intern
Joshua.Moutry@denvergov.org

Muñoz, Alexander
Senior Auditor
alexander.munoz@denvergov.org
720-913-5056

Nelson, Caroline
Internal Audit Intern
caroline.nelson@denvergov.org
720-913-5088

O’Conor, Daniel
Senior Auditor
Daniel.Oconor@denvergov.org
720-913-5072

Owens Gerber, Emily
Audit Manager
emily.owens@denvergov.org
720-913-5016

Puppa, Isabelle
Lead Auditor
Isabelle.Puppa@denvergov.org
720-913-5021

Rossmith, Jackson
Senior Auditor
jackson.rossmith@denvergov.org
720-913-5084

Rowel, Tamietria (Tami)
Associate Auditor
Tamietria.Rowel@denvergov.org
720-913-5046

Samadi, June
Lead Auditor
June.Samadi@denvergov.org
720-913-5052

Sargent, Summer
Internal Audit Intern
Summer.Sargent@denvergov.org

Schafer, Patrick
Audit Senior Manager
patrick.schafer@denvergov.org
720-913-5020

Scott, Katie
Audit Intern
Katie.Scott@denvergov.org
720-913-5110

Scheich, Shannon
Associate Auditor
Shannon.Scheich@denvergov.org
720-913-5021

Smiley, Kayley
Data Analytics Intern
Kayley.Smiley@denvergov.org

Steiner, John-Michael
Senior Auditor
John-Michael.Steiner@denvergov.org
720-913-5092

Summers, Daniel
Audit Analytics Associate
daniel.summers@denvergov.org
720-913-5079

Teska, Ben
Senior Auditor
ben .teska@denvergov.org
720-913-5173

Thaw, Hannah
Associate Auditor
H annah.Thaw@denvergov.org

Thompson, Edyie
Executive Assistant III
edyie.thompson@denvergov.org
720-913-5029
fax: 720-913-5026

Torrance, Christopher
Senior Auditor
Christopher.Torrance@denvergov.org
720-913-5098

Wilson, Chris
Audit Analytics Manager
christopher.wilson@denvergov.org
720-913-5061

Wiseman, Dawn
Audit Director
dawn.wiseman@denvergov.org
720-913-5069

Wysong, Shaun
Lead Auditor
shaun.wysong@denvergov.org
720-913-5094

Denver Labor Division

Baker, Maggie
Lead Labor Compliance Analyst
Maggie.Baker@denvergov.org
303-342-2704

Baroni, Krystal
Contract Compliance Technician
Krystal.Baroni@denvergov.org
720.913.5350

Borchers, Tyler
Contract Compliance Technician
Tyler.Borchers@denvergov.org

Borquez, Matthew
Lead Labor Compliance Analyst
Matthew.Borquez@denvergov.org
720-913-5082

Carter, Carol
Staff Assistant
Carol.Carter@denvergov.org
720-913-5018 720-913-5035 fax

Cropp, Hudson Coltrane
Denver Labor Intern
HudsonColtrane.Cropp@denvergov.org
720-913-5013

Cota-Howlet, Joel
Labor Compliance Analyst
Joel.Cota-Howlet@denvergov.org
720-913-5022

Denis, Arielle
Legal Analyst
720-913-5036
Arielle.Denis@denvergov.org

Digiorgio, John
Labor Compliance Analyst
John.Digiorgio@denvergov.org
720-913-5048

Fraunfelter, Natalie
Labor Compliance Analyst
Natalie.Fraunfelter@denvergov.org
720-913-5004

Giron, Ava
Temporary Part-time Contract Compliance Technician
Ava.Giron@denvergov.org
720-913-5085

Gongón, Rafael
Labor Compliance Manager
R afael.Gongon@denvergov.org
720-913-5017

Griggs, Leah
Contract Compliance Technician
Leah.Griggs@denvergov.org

Kreckman, Abby
Labor Compliance Supervisor
Abby.Kreckman@denvergov.org
720-913-5037

Lopez, Rudy
Labor Compliance Supervisor
R udy.Lopez@denvergov.org
720-913-5082

López, Sandra
Labor Compliance Analyst
Sandra.Lopez@denvergov.org
720-913-5104

McKeon Eldred, Kandice
Labor Compliance Supervisor
Kandice.McKeon@denvergov.org
720-913-5009

Madlock, Jasmine
Labor Compliance Analyst
Jasmine.Madlock@denvergov.org
720-913-5034

Nuñez, Lizeth
Labor Compliance Analyst
NancyLizeth.Nunez@denvergov.org
720-913-5085

Osorio, Luis
Prevailing Wage Administrator
Luis.OsorioJimenez@denvergov.org
720-913-5081

Ramos, Christina
Contract Compliance Technician
Christina.Ramos@denvergov.org
720.913.5013

Rubio, Chris
Lead Labor Compliance Analyst
Christopher.Rubio@denvergov.org
720-913-5075

Stolba, Brandon
Labor Compliance Analyst
Brandon.Stolba@denvergov.org
720-913-5095

Trevino, Karla
Labor Compliance Analyst
Karla.Trevino@denvergov.org
720-913-5040

Van Der Like, Anna
Policy Analyst
Anna.VanDerLike@denvergov.org

Vera-Totten, Verónica
Lead Labor Compliance Analyst
Veronica.Totten@denvergov.org
720-913-1548

Wat, Chris
Labor Compliance Analyst
christopher.wat@denvergov.org
303-342-4828

Communications Division

Arnaz, Rocío
Marketing and Communications Associate
Rocio.Arnaz@denvergov.org

Clark, Kristen
Senior Communication and Reporting Specialist
Kristen.Clark@denvergov.org
720-913-5002

del Valle Ruiz, Sara
Community Engagement Specialist
Sara.delValleRuiz@denvergov.org
720-913-5073

Neumann, Jeff
Graphics and Visual Information Specialist
Jeffrey.Neumann@denvergov.org
720-913-5053

Pavlou, Stelios
Reporting Specialist
Stelios.Pavlou@denvergov.org
720-913-5164

Recent Office News

Airport needs stronger monitoring for third-party technology services

Published on September 21, 2023

DENVER – The airport needs stronger oversight for its nearly 250 third-party vendors operating information technology systems like baggage handling, badging, and security, according to the new report from Denver Auditor Timothy M. O’Brien, CPA.

Tagged as: , Auditor

Audit team adjusts follow-up approach for sidewalks program

Published on September 07, 2023

Because Denver voters approved the new “Denver Deserves Sidewalks” plan, the Auditor’s Office will adjust its approach to following up on related audit work.

Tagged as: , Auditor

Airport improves monitoring process for Peña Boulevard construction

Published on August 17, 2023

DENVER – Denver International Airport has taken some important steps for stronger monitoring of construction costs and timelines, as it considers the next phases of its Peña Boulevard construction projects, according to a new follow-up report out this month from Denver Auditor Timothy M. O’Brien, CPA.

Tagged as: , Auditor