Suffolk County Government Executive and Leadership Team

June, 2026

Leadership Overview

Suffolk County Government has 6 executives leading key functions including strategy, finance, economic development, operations, and legislative support.

Driven by a commitment to community well-being, Suffolk County Government provides essential services, fosters economic growth, and ensures public safety for its residents and businesses.

Leadership Roles at Suffolk County Government

  • Chief Financial Officer - Debora Dickerson-Sims
  • President - James Gruenfelder
  • Chief of Staff - Karen Klafter
  • Department of Economic Development & Planning Chief of Staff - John Huttie
  • Deputy Chief of Staff - Melanie Sinesi
  • Chief of Staff To Suffolk County Legislator Chad Lennon - Stephanie Stafford
  • Debora Dickerson-Sims - Chief Financial Officer

    Debora Dickerson-Sims, the Chief Financial Officer at Suffolk County Government, manages all fiscal operations and financial planning. Dickerson-Sims oversees the county's budget, ensuring fiscal responsibility and the optimal allocation of resources for public services, business support, and safety initiatives. This critical role involves developing financial strategies that promote economic development and sustain community programs. By monitoring expenditures and revenue streams, Debora Dickerson-Sims safeguards the county's financial health and supports long-term growth objectives. The CFO's oversight extends to financial compliance and reporting, reinforcing transparency and accountability in all governmental financial dealings.

    James Gruenfelder - President

    James Gruenfelder, the President at Suffolk County Government, leads the strategic direction and overall management of county operations. Gruenfelder is responsible for driving initiatives that enhance citizen services, public safety, and economic development across Suffolk County. This executive position involves fostering collaboration among departments to ensure the efficient delivery of governmental functions and programs. By setting the vision for the county, James Gruenfelder guides efforts to promote cultural and recreational opportunities. The President's leadership ensures that the county government effectively serves its residents and businesses, promoting a thriving community environment.
    James Gruenfelder

    Karen Klafter - Chief of Staff

    Karen Klafter, the Chief of Staff at Suffolk County Government, directs strategic initiatives and operational execution across various county departments. Klafter oversees the coordination of critical citizen services, ensuring efficient delivery of public safety programs and emergency management responses. This leadership role involves aligning departmental objectives with the county's overarching mission to promote cultural, recreational, and economic development. By managing interdepartmental communication and resource allocation, Karen Klafter drives the effective implementation of county-wide policies and programs. The focus remains on enhancing the quality of life for residents and supporting local businesses through robust governmental operations.

    John Huttie - Department of Economic Development & Planning Chief of Staff

    John Huttie, the Department of Economic Development & Planning Chief of Staff at Suffolk County Government, spearheads initiatives aimed at fostering economic vitality and strategic community planning. Huttie directs efforts to attract and retain businesses, supporting the county's economic development goals and creating employment opportunities. This position involves close collaboration with stakeholders to implement planning strategies that enhance the region's infrastructure and quality of life. By guiding departmental operations, John Huttie ensures the effective execution of programs designed to promote cultural and recreational activities. The focus is on sustainable growth and improving the business environment within Suffolk County.

    Melanie Sinesi - Deputy Chief of Staff

    Melanie Sinesi, the Deputy Chief of Staff at Suffolk County Government, supports the Chief of Staff in executing strategic priorities and managing daily operations. Sinesi assists in coordinating cross-departmental projects, focusing on the delivery of essential citizen services and public safety initiatives. This role involves facilitating communication and ensuring alignment across various county functions to achieve governmental objectives. By contributing to operational planning and problem-solving, Melanie Sinesi enhances the efficiency of county administration. The Deputy Chief of Staff plays a key part in implementing policies that support economic development and community well-being.

    Stephanie Stafford - Chief of Staff To Suffolk County Legislator Chad Lennon

    Stephanie Stafford, the Chief of Staff To Suffolk County Legislator Chad Lennon at Suffolk County Government, manages legislative operations and constituent affairs. Stafford supports Legislator Lennon in developing and advancing policy initiatives that serve the residents of Suffolk County. This position involves coordinating legislative strategies, preparing briefings, and ensuring effective communication between the legislator's office and county departments. By overseeing the legislative agenda, Stephanie Stafford contributes to the effective governance and public service delivery within the county. The role focuses on advocating for community needs and driving legislative action to support economic and social development.

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    Frequently Asked Questions Regarding Suffolk County Government Top Executives and Leadership Team

    Who leads Suffolk County Government?
    Suffolk County Government is led by Debora Dickerson-Sims (Chief Financial Officer), along with executives such as James Gruenfelder (President) and Karen Klafter (Chief of Staff).
    Who is part of Suffolk County Government’s executive team?
    The executive team of Suffolk County Government includes leaders such as Debora Dickerson-Sims (Chief Financial Officer), James Gruenfelder (President), Karen Klafter (Chief of Staff) and other senior executives.
    How many executives does Suffolk County Government have?
    Suffolk County Government has 6 executives leading key business areas.
    What roles are included in Suffolk County Government’s leadership team?
    The leadership team of Suffolk County Government includes roles such as Chief Financial Officer, President, Chief of Staff, Department of Economic Development & Planning Chief of Staff, Deputy Chief of Staff.