Executive Staff - Marin County Sheriff's Office

Sheriff Jamie Scardina

Sheriff

Sheriff Scardina

As a native of Marin County, Jamie grew up in Corte Madera. He attended Marin Catholic High School, and he received an Associate of Arts degree from College of Marin as well as a Bachelor of Arts degree in Sociology with an emphasis in Criminology from the University of Montana, Missoula.

In 1998, Jamie joined the Tiburon Police Department as a police officer before joining the Marin County Sheriff’s Office in 2000. He steadily worked his way up through the ranks from Deputy to Sergeant to Lieutenant to Captain. In December 2018, Jamie was promoted to Undersheriff — the second in command in the office. Jamie also recently served as the Interim Chief of Police for the Tiburon Police Department from September 2020 to April 2021. Jamie was appointed to Sheriff in July 2022.

Jamie has graduated from the following Police Officer Standards and Training leadership courses: Sherman Block Supervisor Leadership Institute, 2012 P.O.S.T. Executive Development program and the 2015 P.O.S.T. Command College, Class 57.

Jamie currently serves as a board member of the Marin County Public Safety Officers Association for Widows and Orphans. Jamie has led fundraising activities to provide survivor benefits to the families of fallen Marin County public safety officers (police and fire).

Jamie is the proud parent of two adult children – Julia and Joseph. Jamie has spent many years volunteering and coaching youth athletics in Marin County, including CYO basketball for St. Isabella’s, Las Gallinas Valley Little League, San Rafael Girls Softball and Smackers softball. Jamie is a member of the Italian Athletic Club of Marin and the Marin Forum.

Undersheriff Sylvia Moir

Undersheriff

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Sylvia Moir

Undersheriff Moir is known as a police executive who is calm in chaos and enthusiastic about the profession. A California native, Sylvia has over three decades of local police practice; with over one decade as a Chief of Police. She was appointed as the Undersheriff of the Marin County Sheriff’s Department in September 2022; responsible for leading and managing the day-to-day operations and administration of the organization. She was appointed as the interim Chief of Police in Napa CA in 2021, the Chief of Police in Tempe Arizona 2016-2020 leading the department through multiple crises and advancements, and the Chief of El Cerrito California Police Department from 2010-2016. She spent most of her early career with the Sacramento Police Department where she served in every division of the department and she was the Incident Commander on hundreds of planned and spontaneous events, she was deployed as an expert on an All-Hazards Incident Management Team, a trainer in several policing subjects, and a member of the Sacramento Police Honor Guard. Notably, she completed rigorous and humbling training with the US Army Old Guard at Fort Myer, VA. and Arlington National Cemetery.

In 2021 Undersheriff Moir was appointed by US Secretary of Commerce Gina Raimondo to the FirstNet Board and is the chair of the FirstNet Governance and Rick Committee, coordinator for the California Police Executive Development Course, and a member of the Law Enforcement Immigration Task Force. She served on the Executive Board of the Arizona and California Associations of Chiefs of Police and is a past President of the Police Executive Research Forum.

Undersheriff Moir is in demand as a speaker and in 2019, she participated in TED^xSoMa’s Modern Campfire series, where she spoke on the complexity of modern-day policing and the importance of practicing mindfulness and developing resilience for enduring service. She co-hosts a podcast called the Hollow Bunny Leadership podcast with her friend and colleague, retired police chief Kristen Ziman. Their broad experiences and humorous approach engage listeners from a variety of professions.

Undersheriff Moir holds a Bachelor of Science in Criminal Justice from California State University, Sacramento, a Master of Arts in Organizational Management, and a Master of Science degree from the Naval Postgraduate School - Center for Homeland Defense and Security where she was awarded the Butch Straub Award for Leadership and Intellectual Courage. She enjoys reading, hiking, running, and almost anything outside; she was excited to run the NY Marathon in November 2021, with the NYPD team and ran the 2022 Chicago Marathon to benefit Alzheimer’s research!

Captain Scott Harrington

Detention Bureau Commander

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Scott Harrington

As a native of the Bay Area, Scott grew up in San Francisco before moving to Sonoma County, where he and his wife, Robyn, chose to raise their four children, Taylor, Hunter, Landon and Scarlett. Scott attended California State University Sacramento where he received a Bachelor of Sciences degree with an emphasis in Criminal Justice.

Scott joined the Marin County Sheriff’s Office in December 2002. Since his hiring, Scott has served in the Patrol and Custody Divisions in addition to working as a narcotics detective with the Marin County Major Crimes Task Force. He has worked as a supervisor in the Patrol Division, the Custody Division, the Professional Standards Unit and the Court Services Division. Between 2002 and 2021, Scott has served in multiple Divisions achieving every Merit System classification (Deputy Sheriff, Sergeant, Lieutenant, and Captain). In March 2016 Scott was selected to be the Station Commander for the Sheriff’s Office’s Southern Marin Station.

In September 2019, Scott was promoted to the rank of Captain. Since the promotion, Captain Harrington has been commanding the Administrative and Support Services Bureau which includes the Marin County Communications Dispatch Center, the Coroners Division, the Fiscal Services Division, the Technology Services Unit, the Documentary Services Unit, the Professional Standards Unit, and the social media team.

As a parent and community partner, Scott has coached through the Sonoma/Marin Boys & Girls Club (basketball), the Petaluma Girls Softball Association, the Petaluma American Little League, and the Petaluma Youth Soccer League. Scott is a member of several law enforcement professional associations.

Captain Harrington has graduated from the following Police Officer Standards and Training leadership courses: Sherman Block Supervisor Leadership Institute (2012), 2019 P.O.S.T. Executive Development program and the California P.O.S.T. Command College in 2022.

Captain Craig Scardina

Field Services Commander

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Craig Scardina

As a native of California, Craig grew up in Corte Madera and graduated from Marin Catholic High School. Craig and his wife, Angela, raised their two daughters, Brittney and Isabella, and son, Anthony in Rohnert Park. Craig attended California State University Fresno where he received a Bachelor of Sciences degree with an emphasis in Criminology.

Craig joined the Marin County Sheriff’s Office in September 1995. Since his hiring, Craig has served in the Patrol and Custody Divisions in addition to working as a narcotics detective with the Marin County Major Crimes Task Force. He has worked as a supervisor in the Patrol Division, the Custody Division, the Investigations Division, and the Professional Standards Unit. Between 1995 and 2018, Craig has served in multiple Divisions achieving every Merit System classification (Deputy Sheriff, Sergeant, Lieutenant, and Captain). In March 2016 Craig was selected to be the Commander for the Sheriff’s Office’s Professional Standards Unit.

In December 2018, Craig was promoted to the rank of Captain. Since the promotion, he has been commanding the Field Services Bureau which includes the Patrol and Investigations Divisions.

As a parent and community partner, Craig has coached for the Rohnert Park Warriors Youth Football Organization, the Rohnert Park Girls Softball Association, Rohnert Park Cal Ripken Baseball, and St. Elizabeth CYO Basketball. Craig is also a volunteer at Rancho Cotate High School. He is a member of several law enforcement professional associations.

Captain Scardina has graduated from the following Police Officer Standards and Training leadership courses: Sherman Block Supervisor Leadership Institute (2008), 2015 P.O.S.T. Executive Development program, and the California P.O.S.T. Command College in 2017.

Captain Ryan Petersen

Administrative and Support Services Commander

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Ryan Petersen

As a native of Sonoma County, Ryan grew up in Santa Rosa until he attended and graduated from Chico State with a BA in Public Administration. With the help of his family, he attended the Santa Rosa Junior College Police Academy, class 137, as an unaffiliated recruit. As fate would have it, he sat next to Marin Sheriff’s Deputy Trainee Jim Mathiesen, who introduced him to the Sheriff’s Office and encouraged him to apply. Thanks to Jim’s mentorship, Ryan was hired by Marin County Sheriff’s Office while attending the academy and began his career upon graduation in 2002.

As a Deputy, Ryan worked in the Detention and Field Services Bureaus, serving the latter as both a Field Training Officer and Detective. He was fortunate to have now-Sheriff Scardina as his first Patrol Field Training Officer, and now-Captain Scott Harrington as his first beat partner following his completion of the training program. As a Detective, Ryan was recognized by the Jeanette Prandi Children's Center for his skills as a forensic interviewer.

After being promoted to Sergeant in 2016, Ryan served in the both the Jail and Court Divisions before being assigned to the Marin County Major Crimes Task Force as the Assistant Commander. Following his promotion to Lieutenant in 2020, Ryan served as a Patrol Watch Commander and as the Professional Standards Lieutenant. Ryan was promoted to Captain in 2024 and is honored to serve as a member of Sheriff Scardina’s Executive Team. He currently leads the Administrative and Support Services Bureau.

Ryan lives in West Sonoma County with his wife Ashley and three children. In his free time, he is fortunate to have the opportunity to coach youth sports and volunteer with local civic organizations. Ryan has graduated from the Sherman Block Supervisor Leadership Institute Class 428 (2019), POST Management School (2021) and POST Executive Development (2024).