Team Anderson
Maggie Sleeper
Deputy Chief of Staff
(858) 264-9547
Maggie.Sleeper@sdcounty.ca.gov
Maggie Sleeper brings almost two decades of political, policy and industry experience to the job of Deputy Chief of Staff for Supervisor Joel Anderson. Previously, Maggie served as a Municipal Infrastructure Advisor for San Diego Gas & Electric, where she partnered with local governments to coordinate major infrastructure projects. She was the recipient of an SDG&E Spotlight Award for her work facilitating a series of Wildfire Safety Workshops with local governments and community leaders. Prior to her role at SDG&E, Maggie served as Director of Policy to San Diego City Councilmember Scott Sherman, where she worked on reforms to encourage housing production and improve outcomes for the City’s homelessness response system. For 10 years, Maggie served as a staff member, Legislative Director, and Deputy Chief of Staff for California Assemblymember, then State Senator Joel Anderson, and Assemblymember Linda Halderman. During this time, she shepherded successful legislation to crack down on human trafficking in massage establishments, to provide funding to school districts for reducing school bus emissions, to prevent incarcerated physicians from writing prescriptions, and to provide transitional services to exonerated inmates. She also managed the legislative efforts to rename a portion of I-15 near MCAS Miramar the “Tuskegee Airmen Highway,” as well as historic designations for Highway 94 and Highway 67 in the San Diego backcountry. Maggie graduated from University of California, San Diego with a BA in Political Science and is a member of the Phi Beta Kappa honor society. She is an Alumna of the San Diego County Water Authority “Citizens Water Academy,” LeSar Development Consultants Housing Policy Leadership Academy, and holds a certificate in Advanced Public Engagement for Local Government from the Pepperdine School of Public Policy. She, her husband, and six-year-old son reside in the Spring Valley community of San Diego County.
Team Anderson exists to make County government work for the constituents of District 2. Learn more about the roles and responsibilities of Team Anderson below. If you are unsure of who to contact with your question or concern, please consider using the Contact Us form.
Administrative Team
Roarke Shanley
Chief of Staff
(858) 276-8919
Roarke.Shanley@sdcounty.ca.gov
Roarke is a life-long San Diegan and first generation American. Having served in multiple roles as a Civil Servant, he brings a wealth of experience from both state and local government to his role as District Director for Supervisor Joel Anderson. Roarke graduated from the University of California San Diego with a bachelor’s degree in political science with an emphasis on American Politics, as well as a Minor in Marketing from the Rady School of Management. Prior to joining Team Anderson, Roarke served as Senior Field Representative to Assembly Minority Leader Marie Waldron. In his spare time, he enjoys spending time with his family, running on the many beautiful trails San Diego County has to offer and tending to his avocado trees.
Heather Koszka
Deputy Chief of Staff
(619) 531-5932 (desk)
Heather.Koszka@sdcounty.ca.gov
Heather Koszka is an experienced and enthusiastic public servant with a passion for making public policy accessible to the people. A Northern California native, Heather found her aptitude for public service while working in the California State Legislature in Sacramento. For over a decade, Heather connected San Diego constituents with their state government while working for multiple state legislators, including Senator Joel Anderson. Heather quickly became known for her exceptional scheduling and professional skills throughout the Capitol, where she was asked to host bipartisan trainings for several legislative offices. Heather’s work has received state and national attention, including recognition from the Robert M. Hertzberg Capitol Institute and the National Conference of State Legislatures (NCSL). Some of her greatest accomplishments include organizing highly attended community events and growing Senator Anderson’s Capitol Internship program to over 180 interns, later earning her a position as Capitol Office Director for Senator Brian Jones.
Heather rejoined Team Anderson in 2021 and is eager to serve San Diego County constituents, now at a local government level. She is thrilled to finally be living in the San Diego area and plans to explore all the beautiful things our area has to offer.
Miyu Oda-DesHotels
Constituent Services Manager
(619) 705-9601
Miyu Oda-Deshotels, a San Diego native, is dedicated to making a meaningful impact in her community by connecting individuals with the resources they need. She holds a bachelor’s degree in psychology from San Diego State University and a master’s degree in public administration from Grand Canyon University. With an extensive network in government and a passion for public service, Miyu serves as a direct point of contact for referrals to government departments and agencies.
If you have any County casework inquiries or issues, please reach out to Miyu at Miyu.Oda@sdcounty.ca.gov
McKenna Carlson
Special Projects Assistant
(858)
289-9221
McKenna.Carlson@sdcounty.ca.gov
Bio and photo coming soon.
Kaia Tanaka
Constituent Affairs Assistant
(619) 999-3059
Kaia Tanaka is an incoming transfer student at University of California San Diego studying economics after attending San Diego City College. Originally from the Bay Area, she moved to San Diego in 2023 and began working for Supervisor Anderson as an intern before officially joining the team in February 2024.
Kaia works in Constituent Affairs managing casework and constituent concerns, while also collaborating closely with Taxpayer Services to help resolve complex cases. Although she never planned on a career in politics, Kaia quickly developed a strong passion for community engagement and public service through her work in local government. She is dedicated to engaging the community in the political process, helping residents connect with resources, and making government more accessible—especially for underserved and rural communities. Kaia is passionate about hearing to community voices, helping people navigate local government, and working toward long-term solutions that improve the lives of constituents.
Communications Team
Matthew G. Phy, MSL
Deputy Chief of Communications
(619) 957-8834
Matthew is a southern California native bringing almost two decades of political, communications, and policy experience to District 2. Graduating Summa Cum Laude from Arizona State University, he earned a Bachelor of Science Degree in Political Science with Minors in Communication and Media Analysis. In summer of 2023, Matthew was admitted and awarded a scholarship to the University of Southern California’s Gould School of Law, a Top-20 Law School in the country. In December 2024, he completed a two-year program in just 16 months while working full-time, graduating with his Master of Studies in Law (MSL) legal graduate degree with an emphasis and separate graduate certificate in Business Law. Matthew was recognized in 2023 and 2025 as a “Top 40 under 40” honoree by San Diego Metro Magazine and the San Diego Business Journal, respectively. Matthew’s significant policy and communications experience includes several statewide and local campaigns, where he served as a top advisor. Prior to joining Supervisor Anderson’s office, Matthew was Deputy District Director and Senior Policy Advisor to former California State Senate Minority Leader and State Senator Patricia C. Bates. Matthew is a foodie and loves exploring new, local restaurants with friends. He’s also a proud uncle with three nieces and two nephews: Braelyn, David, Kinsley, Grace, and Caleb.
Matthew is the Supervisor's chief spokesperson overseeing all communications, media inquiries, and is his lead policy advisor on public safety.
Ian Harper
Communications Manager
(858) 264-9257
Ian is a graduate of San Diego State University (SDSU) where he obtained a bachelor’s degree in Economics. Ian is a Long Beach, California (LBC) native, and joined Team Anderson full-time in May 2024, after over two years as a Student Worker and Legislative Intern under Supervisor Anderson. As a student worker, Ian assisted the community outrach team with proclamations, outreach letters, and board committee appointments. Ian is a lifetime member of the Delta Chi International Fraternity, and previously served on the SDSU Chapter’s Executive Board as the Risk Management Officer.
Outside of the office, Ian enjoys working on cars, weightlifting, and following Los Angeles sports teams.
Ian handles social media, content creation, graphic design and internal communications for Supervisor Anderson.
Harshdeep Singh
Communications Assistant
(858)
392-5806
Harshdeep.Singh@sdcounty.ca.gov
Bio and photo coming soon.
Policy Team
Dallin Young
Director of Policy
(858)
298-5155
Dallin.Young@sdcounty.ca.gov
Dallin Young has spent his entire career working as a policy, political, and government affairs professional. He began working on political campaigns immediately after graduating with a degree in History from San Diego State University and has since worked on over 30 political campaigns throughout the state of California, including San Diego County's most competitive, expensive, and closely watched races. Dallin gained extensive experience developing and moving policy while serving in leadership roles on committees of both state and local organizations in the burgeoning cannabis industry. Prior to joining Team Anderson, Dallin led energy policy and outreach efforts on large scale renewable energy projects throughout San Diego County, which earned him numerous awards for his leadership and expertise in the field.
While away from office, Dallin is an avid gardener, a passionate advocate in the disability community, and a long-time high school wrestling coach. More than anything, he loves spending quality time with his wife and two daughters and chocolate labradoodle Mocha.
Dallin handles the Land Use an Environment Group portfolio as well as economic development, AI and IT policy, LAFCO, and the Fiscal Transparency and Accountability Subcommittee.
Michael Kulis
Senior Policy Manager
(619)
764-1883
Michael.Kulis@sdcounty.ca.gov
Michael has served in several leadership positions for public and private organizations at the federal level and in San Diego Since 1991. Following his service as a senior staff member for a U.S. Senator and presidential candidate, Michael served in senior staff positions for two members of the San Diego County Board of Supervisors. He also held a senior management position for fifteen years at San Diego International Airport, earning the designation of International Airport Professional, and served in a senior position for the private sector public relations firm Nuffer, Smith, Tucker. Michael currently serves in a retiree-rehire capacity as Senior Policy Manager for Supervisor Joel Anderson and assists in the development of various policy initiatives, primarily focusing on Finance and General Government issues.
He is a graduate of Villanova University, a long-time resident of the community of San Carlos and an avid mountain biker.
Michael Ogbeiwi
Policy Advisor
Michael.Ogbeiwi@sdcounty.ca.gov
Michael Ogbeiwi is a graduate of the University of California, San Diego (UC San Diego), where he earned a Bachelor of Science in Pharmacological Chemistry and a Bachelor of Arts in Political Science. Originally from Pomona, California, Michael joined Team Anderson as an intern in 2024. During his internship, he assisted constituents through the grant application process as an assistant to the Grant Administrator and served as a Student Lead, helping train new interns. In recognition of his commitment to public service, Michael received the President's Volunteer Service Award for completing more than 300 hours of service in Supervisor Anderson's office. He became a Student Worker in 2025 before joining the office full-time as a member of the Policy Team.
Michael conducts policy research and provides legislative support for the Land Use and Environmental Group portfolio, serves as backup for the Public Safety Group, and assists with the Fiscal Transparency and Accountability Subcommittee.
Outside of the office, Michael enjoys weightlifting, photography, and staying current on developments in biotechnology and life science.
Virginia Casey
Policy Advisor
(619) 963-8482
Virginia.Casey@sdcounty.ca.gov
Virginia brings over 20 years’ experience in advocacy, community engagement, policy analysis, and coalition building to the role of policy advisor for Supervisor Anderson and the constituents of District 2. Virginia’s policy experience spans the nonprofit and international civil service sectors as well as multiple volunteer positions both here in San Diego and while living abroad. Before joining Team Anderson, Virginia served as a Government Affairs Manager at the San Diego Hunger Coalition and as the Communications Manager at the Young Survival Coalition where she helped develop and lead a thriving online advocacy and support community for young women with breast cancer. With multiple family members with Intellectual and Developmental Disabilities (IDD), Virginia is deeply devoted to policy development that ensures a healthy and thriving community for all.
After many years away, Virginia is thrilled to call San Diego home again and enjoys spending time at Fiesta Island Dog Park with her dog Moxie, is very active in her local running club, and helps lead San Diego’s only year-round cribbage club.
Addison Walburg
Legislative Coordinator
Addison.Walburg@sdcounty.ca.gov
Addison is a senior at UC San Diego studying History and Political Science. She joined Supervisor Joel Anderson's office in March 2026 as a Legislative Intern, where she supported policy research, coordinated projects, and worked directly with constituents. Now serving as Legislative Coordinator, Addison supports the Policy Team by conducting policy research and contributing to written policy memos, letters, briefing materials, and talking points. She is passionate about advancing thoughtful public policy and is committed to improving the lives of San Diego County residents through effective, responsive government.
Outside of the office, Addison is the President of Moot Court at UC San Diego, Vice President of the Undergraduate History Network, and a Fellow of the UC San Diego Law and Policy Fellowship. In her free time is an avid reader, knitter, and crocheter.
Sahara Johanesen
Legislative Coordinator
(858)
392-5805
Sahara.Johanesen@sdcounty.ca.gov
Sahara, a native of San Diego, is pursuing an Associate's Degree in Criminal Justice and Paralegal Studies from Southwestern College. She holds a specialization in Intellectual Property Law from the University of Pennsylvania and a certificate in American Contract Law from Yale University. Sahara began her career in public service as a Legislative Intern with Supervisor Joel Anderson, where she prepared legislative briefs for the Taxpayer Advocate Department.
In her current role, Sahara focuses on finances and general government affairs, while supporting the broader administrative and financial operations of District 2. Leveraging her background in government processes and the law, Sahara strives to build a connection between the citizens and policies to ensure residents have access to effective government services.
In her free time, Sahara volunteers at her local library, reading to children and helping promote literacy among youth.
Community Outreach Team
Mariko Nakawatase
District Director
(858) 285-0162
Mariko.Nakawatase@sdcounty.ca.gov
Mariko is a native San Diegan with a keen interest in helping her community foster growth, connection and acceptance. A graduate of Arizona State University with a double major in Philosophy and Political Science, Mariko also received her Masters in Public Administration from ASU. She is ready to help create a better community for everyone. Before joining Team Anderson, Mariko assisted him with his campaign and also worked on the Escondido City Council campaign for Joe Garcia. Her decade long record of community service in the county includes the cities of La Mesa, Bonita, San Diego and Imperial Beach. She has a background of service, fundraising, and leadership and passion for her county. She is thrilled to be back on Team Anderson and ready to serve the constituents of District 2.
Jillian Osborne
Community Outreach Manager & Grants Administrator
(619) 508-2397
Jillian.Osborne@sdcounty.ca.gov
Jillian Osborne is a San Diego native with a passion for connecting with diverse communities across San Diego County. She graduated Magna Cum Laude from University of California, San Diego, obtaining bachelor's degree in Sociology with a minor in Literature and Writing. As Community Outreach Manager, Jillian has the privilege of recognizing exceptional community members through Supervisor Anderson's Proclamation program. In her role as Grant Administrator, she is dedicated to assisting constituents in navigating the grant application process. Jillian prioritizes transparency, ensuring that the grant process is clear and accessible to all applicants.
A proud San Diegan, Jillian loves the region she grew up in and is thrilled to serve the community that shaped her. Outside of work, she enjoys exploring the Poway Farmer's Market, practicing yoga, and discovering new restaurants with friends.
For questions about the Community Enhancement, Neighborhood Reinvestment, and Small Business Stimulus Grant programs, please contact Jillian at Jillian.Osborne@sdcounty.ca.gov.
Christopher Partridge
Community Outreach Manager
(858) 264-8109
Christopher.Partridge@sdcounty.ca.gov
Chris is a San Diego native with a diverse background in both the private and public sectors. He completed an Office Professional Training certificate program at Grossmont College, which laid the foundation for his versatile career. Chris spent ten years as a general manager at a restaurant, while simultaneously gaining experience in various fintech startups. His roles included working at an advertising SaaS firm, managing IT operations in a data center, and overseeing technical support at a call center. Additionally, he worked in the gaming and hospitality industry in a role as a banking, insurance, and tax advisor, handling complex customer service tasks, managing the flow of assets, and navigating intricate tax paperwork. Driven by a desire to make a positive impact, Chris transitioned into the public sector to help improve local government operations. With a strong curiosity about how local government functions and how to increase its efficiency, he is passionate about finding innovative ways to serve the community and maximize the impact of available resources. Chris lives by the motto, "Be the change you want to see in the world," and is always focused on making a tangible difference. Before joining full-time, he also contributed to various campaigning efforts to support his local community.
In his personal time, Chris enjoys spending time with friends and family, traveling, and exploring the many beautiful corners of San Diego. He also loves going to concerts and balancing hard work with a well-rounded, enjoyable lifestyle.
For any Certificate of Recognition requests, please use the certificate request form or contact at Christopher.Partridge@sdcounty.ca.gov.
William Seykora
Internship Program Manager
(619) 860-9623
William.Seykora@sdcounty.ca.gov
A lifelong San Diegan, Will Seykora is the Internship Program Manager for San Diego County Supervisor Joel Anderson, stepping into the role in October 2025. He oversees and continues to grow a dynamic team of interns, training the next generation of public servants to deliver the high-quality, constituent-centered service the office is known for.
Before joining the County, Will worked on political campaigns across the country at every level, from village council races in Wisconsin to top-tier congressional campaigns in California. He has led hundreds of volunteers and played a key role in executing large-scale grassroots outreach efforts that mobilized and engaged communities in the civic process.
Jesus Gonzales
Internship Program Assistant
Jesus.GonzalezCardenas@sdcounty.ca.gov
Bio and photo coming soon.
Vondila Margo
Community Outreach Coordinator
(858) 289-9234
Vondila is a San Diego native with a passion in bringing people closer to their local government. She has had the privilege of building strong relationships between local leaders and the community.
Vondila began her journey with Supervisor Anderson’s office as a Legislative Intern in 2022, later growing into the role of an Executive Intern in 2023. During this time, she committed to fostering relationships with constituents through her role as the Special Projects Assistant in the Certificate of Recognition department. In addition to earning the Presidential Service Award for completing over 600 hours at Supervisor Anderson’s office, Vondila also received a Five Signature Proclamation recognizing her achievements and contributions to the community.
Rejoining Team Anderson as the Community Outreach Coordinator in 2025, Vondila is responsible for planning and executing community outreach events and strengthening connections between Supervisor Anderson and District 2 constituents.
Zakhar Polovyi
Taxpayer Services Assistant
Zakhar.Polovyi@sdcounty.ca.gov
Zak moved to San Diego County from Ukraine just 2 years ago and has since stayed an active member of the community.
Fluent in 3 languages, he joined Supervisor Anderson’s team as an intern assisting Taxpayer Advocate Andrew Hayes and now serves as a Taxpayer Services Assistant advocating for District 2's residents.
Josue Ochoa
Field Representative
Josue is a highly motivated, and high achiever who seeks out challenges in all shapes they come in. A native Angeleno, he moved to San Diego four years ago to pursue his higher education.
Josue is currently a student at the University of California San Diego, majoring in Economics. He started his political career in 2026 as a Legislative Intern with the internship program and quickly moved up into being a student lead.
He is motivated to be a part of the outreach team to help connect with constituents.
Nathan Hoffman
Field Representative
Nathan.Hoffman@sdcounty.ca.gov
Nate is a lifelong San Diego resident who is
pursuing a bachelor’s degree in political science from the University
of California San Diego. As a student at community college, Nate was
connected to the Supervisor Joel Anderson internship program in
October of 2025, where he was able to foster a relationship with Team
Anderson that landed him a job serving our community.
Nate works as a Field Representative for Supervisor Joel Anderson’s Office. Pursuing his dream of public service, Nate reaches constituents where they’re at so they can advocate for their positions and concerns. In addition to engaging with the community, Nate empowers interns to engage with the constituents of District Two, fostering an engaged community as well as confident youth.