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Office of the County Manager

Welcome to the Office of the Sullivan County Manager

The County Manager of Sullivan County is appointed by the nine members of the Sullivan County Legislature.  The County Manager is responsible for the overall administration of County government, as well as providing and coordinating staff services to the County Legislature, Chair of the Legislature and its committees.  Duties of the County Manager include preparation of the Sullivan County Operating and Capital Budgets, appointment of County Commissioners and department heads (subject to confirmation by the Legislature), execution and enforcement of County laws, and efficient implementation of County initiatives as set forth by the Legislature.

For more information on the responsibilities of the Sullivan County Manager, please see Article III of the Sulivan County Administrative Code.  A link to the code has been provided below.

Sullivan County Administrative Code


About the County Manager

Joshua Potosek has worked with Sullivan County for eleven years in various management titles.  He currently is the County Manager for Sullivan County and has been in that position since March of 2013.  Josh is an inaugural member of the Sullivan County Land Bank, having worked to create and dedicate resources to help ensure its successful creation.  Josh is also a member of the Emerald Corporate Center Board, Sullivan County Tobacco Asset Securitization Board, Sullivan County Partnership for Economic Development, and an Ex Officio member of the Sullivan County Chamber of Commerce and Sullivan County Visitors Association. Prior to joining Sullivan County, Josh worked in the private sector.  Josh graduated from SUNY Binghamton with a Bachelor of Science degree in Economics and Management, and earned his MBA at Marist University. He is a longtime resident of Sullivan County and lives in Livingston Manor with his wife and two children.


About the Deputy County Manager

John Liddle joined Sullivan County Government in April 2019 after completing 20 years of service in the United States Navy. His final tours of duty in the Navy were in Washington, DC, first as the second-in-command of the Washington Navy Yard and Naval Observatory and finally as the Executive Assistant to the Admiral responsible for the operations and maintenance of all 71 Navy bases around the world. As Deputy County Manager, John serves as the de facto Chief of Staff for Sullivan County Government and he also manages County Government’s support to town, village, and school district staffs around Sullivan County. During his military service, John obtained Master’s Degrees in Strategic Communications and Leadership from Seton Hall University and National Security and Strategic Studies from the U.S. Naval War College. He resides in Liberty with his wife and two children.


About the Assistant County Manager

Stephanie Brown joined the Sullivan County management team as the Assistant County Manager and Corporate Compliance Officer in January 2019. She began her career with Sullivan County as a Public Health Nurse and Quality Improvement Coordinator at Public Health Services and transitioned to Director of Aging Services at the Office for the Aging in 2018. As the Assistant County Manager, Stephanie’s primary responsibility is development and oversight of the County’s Corporate Compliance Program. She has 14+ years of experience as a Registered Nurse, with the last 5 years focused on regulatory compliance and accreditation, and is a member of the Society of Corporate Compliance and Ethics and the Health Care Compliance Association. In addition to her other roles, Stephanie is the Wellness Coordinator for the Sullivan County Employee Wellness Program and works to promote a healthy work culture for Sullivan County employees. Stephanie earned her Master of Science in Nursing and Master of Business Administration from the University of Phoenix. A longtime resident of Sullivan County, Stephanie lives in Youngsville with her two daughters.