Board of Directors

Raymond C. Lee III, ICMA-CM serves as City Administrator for the City of Portland, Oregon, where he oversees day to day operations across more than two dozen bureaus and offices, supporting over 7,000 employees and an $8.6 billion total budget that delivers essential services to the community. He works closely with the Mayor and City Council to align citywide operations, implement Portland’s new form of government, and advance a financially sustainable future for the organization. 

Lee brings two decades of public sector leadership experience, with a focus on organizational alignment, economic development, service delivery, and building high performing local governments. Prior to Portland, he served as City Manager of Greeley, Colorado, and held progressive leadership roles with the City of Dallas, as well as serving as Public Works Director for the City of Amarillo, Texas. 

He holds a master’s degree in public administration from the University of Kansas and a bachelor’s degree in public administration from Henderson State University. He has completed executive leadership programs at Harvard University, Yale University, and Brown University, and holds executive certificates from Cornell University in labor relations and financial management. He is a Credentialed Manager through the International City County Management Association and is also a certified Project Management Professional and Lean Six Sigma Green Belt.

Danielle Mahoney serves as Assistant City Manager for the City of Novi, where she helps lead organizational strategy, operational excellence, and culture transformation across the organization. In this role, she works closely with executive leadership to advance high-impact initiatives, strengthen internal alignment, and deliver exceptional public services to the community.

Danielle brings a strong background in innovation and organizational development, previously serving as Assistant Director of Research and Development for the Town of Cary, North Carolina. There, she led a team focused on driving innovation, improving business processes, and enhancing citizen engagement through forward-thinking solutions.

Known for her collaborative leadership style and commitment to high-performance organizations, Danielle has been instrumental in advancing initiatives focused on leadership development, cross-departmental alignment, and fostering a “Team Novi” culture grounded in trust, innovation, and shared accountability.

She holds both a Bachelor of Science and a Master of Public Administration from North Carolina State University, and has completed executive leadership programs through Vanderbilt University and Stanford University.

A passionate public servant, Danielle is dedicated to building resilient, future-ready local governments and creating meaningful impact for both employees and the communities they serve.

Outside of her professional role, Danielle enjoys traveling and exploring new places with her husband, often seeking out unique destinations and experiences. She also has a passion for the outdoors and can frequently be found hiking, visiting national parks, or spending time in nature. In her downtime, she enjoys reading, live music, and playing tennis.

Heidi has served as the Ellensburg, WA City Manager since May 2021. She has twenty years in local government—with prior experience in private and nonprofit leadership. Heidi grew up in a small town in Southwest Minnesota. She attended the University of Minnesota, holds a B.A. from M etro State University in St. Paul, MN, an MPA from The Evergreen State College in Olympia, WA, and completed the Senior Executives program at the Harvard Kennedy School.

Heidi is committed to maintaining a well-managed city, supporting a strong team to deliver quality innovative public services and resilient infrastructure systems; and building successful community partnerships to address the complex challenges that face the community.

Jonathan R. Lewis was appointed County Administrator for Sarasota County in January 2018.

He and his wife have two children and have lived in Sarasota County since May 2011.

Prior to his appointment as County Administrator, Lewis served as City Manager for the City of North Port from May 2011 to April 2017. He previously served as Deputy City Manager of Palm Bay, Florida, from August 2004 to May 2011, and as Assistant Town Manager for the Town of Belleair.

Lewis is a graduate of the University of South Florida, where he earned a Bachelor of Arts in Political Science. He also earned a Master of Public Administration from the University of South Florida and completed the Senior Executives in State and Local Government Program at Harvard Kennedy School.

He has previously served as President of the Florida Association of County Managers, the Florida City and County Management Association, the Space Coast Public Management Association, and the Suncoast Chapter of the American Society of Public Administration.

Lewis currently serves on the Board of Directors for the National Association of County Administrators.

Lori Curtis Luther is Overland Park, Kansas’ fifth City Manager. She manages a city with a population over 200,000, a staff of 1,500 and a nearly $500 million total budget. Her distinguished thirty-year career in public service includes twenty years of experience in the chief executive role. Overland Park is an innovative, industry-leading community and organization, always striving for excellence. It is often recognized as a top city in which to live and work, and a happiest city in the United States.

Prior to working in Overland Park, Luther served as the city manager for the City of Beloit, Wisconsin. Her city management work focused on budgeting and financial management, modern organizational leadership, strategic planning and economic development to support neighborhood revitalization and redevelopment. Prior to serving as Beloit’s city manager, Luther was the county administrator for Peoria County, Illinois, city administrator for Waukesha, Wisconsin and city administrator for Reedsburg, Wisconsin.

Luther served as Overland Park’s assistant city manager from 2000 to 2005. Prior to serving as Overland Park’s assistant city manager, Luther served in the Johnson County Government, the City of Harrisonville, Missouri, and City of Kansas City. She holds a Master of Public Administration degree from the University of Kansas, and a Bachelor of Arts degree from Baker University. She previously taught at Northern Illinois University and is a master's lecturer at her alma mater, The University of Kansas School of Public Affairs and Administration. She is a graduate of the Harvard-Bloomberg City Leadership Initiative

Matt Mueller has served as Town Manager of Little Elm, Texas since September 17, 2012. He brings more than 25 years of experience in local government, including service in executive leadership roles since 2006.

Matt holds a Bachelor of Arts in Political Science from the University of Central Oklahoma and a Master of Public Administration from the University of Oklahoma.

He is a Credentialed Manager through the International City/County Management Association (ICMA). He currently serves as Chair of the Texas City Management Association (TCMA) Ethics Committee and is a past president of the North Texas City Management Association (NTCMA). In 2025, he was recognized as a Top Influencer in Local Government by Engaging Local Government Leaders (ELGL). He also serves on the boards of the North Texas Commission (NTC) and the Alliance for Innovation (AFI).

Michael Sable is the City Manager of Maplewood, Minnesota, and an experienced local government executive known for advancing innovation, organizational performance, and community-centered leadership. He previously served on the ICMA Executive Board. He currently serves on the Alliance for Innovation Board, and as adjunct faculty with the University of Kansas Leading Edge program. Michael is also a certified yoga instructor and co-host of the Authenticity FM podcast, where he explores leadership, resilience, and the future of public service. 

Darin Atteberry is a seasoned leader with extensive experience in both the public and private sectors. He served as City Manager of Fort Collins, Colorado, from 1996 to 2021, where he built a strong reputation for collaborative leadership and balancing community needs with fiscal responsibility. In 2021, Atteberry transitioned to the private sector as Market President of Northern Colorado for Elevations Credit Union. His career spans a unique blend of public service and private sector expertise, positioning him as a versatile and influential figure.

Atteberry’s leadership in Fort Collins was marked by significant achievements in environmental sustainability, economic vitality, and inclusivity. He spearheaded initiatives to reduce greenhouse gas emissions, promote renewable energy, and ensure robust public services. Under his guidance, Fort Collins received the prestigious Baldrige Performance Excellence Award, becoming the third U.S. city to achieve this honor for operational excellence.

Before his time in Fort Collins, Atteberry held various public sector roles across California, Georgia, and Washington, where he was known for his integrity, consensus-building skills, and ability to navigate complex challenges. His leadership earned him numerous accolades, including the Colorado Governor’s Citizenship Medal, the ICMA Award for Career Excellence, and recognition as a BizWest Top 50 Most Influential Business Leader. He was also recognized in GovTech's Top 25 Doers, Dreamers, and Drivers for his exceptional leadership in local government, where he advanced innovative solutions in public service, sustainability, and operational excellence.

In addition to his professional accomplishments, Atteberry is a passionate advocate for civic engagement, contributing to various community and nonprofit organizations. He has served on multiple boards, including an eight-year tenure with the Alliance for Innovation, and has made a lasting impact on the organizations he has led, shaping them into models of responsible and innovative local government. Darin and his high school sweetheart, Deborah, have four adult children and four grandchildren.

Michael, a native of Alabama, earned his Bachelor of Arts Degree from the University of Alabama and his Master of Public Administration Degree from Georgia State University. He began his local government career in 1984 as an administrative intern in the County Manager's Office in Jackson County, Oregon. He subsequently worked in Eugene, Oregon as a budget analyst before going to work for Gwinnett County, Georgia.  Though he began work in Gwinnett County as the Budget Manager, he progressed through the organization to eventually become Assistant County Manager over the course of seven years with the county. Michael spent six years as the City Administrator of Alpharetta, Georgia, the fastest growing city in the state of Georgia.

Between January 1999 and January 2026, Michael served as the City Manager of Olathe, Kansas, the longest tenure for anyone to have served in that position.  Olathe has the distinction of being one of the fastest growing communities (#33 according to a 2009 U. S. Census estimate) in America over the last decade and in 2008, Olathe was recognized by Money Magazine as the 11th Best Place to Live in the country. Olathe is also an award-winning community which has received several national awards for various innovative programs.

Since February 2026, Michael has served as the President/CEO of the Alliance for Innovation, an organization focused on collaboration and innovation in local government. Previously, Michael had served on the Board of Directors for the Alliance, serving two stints as the Chair of the Board.

In 2023, Michael was awarded the Michael E. Copeland Leadership Award from Mid-America Nazarene University. In 2022, he was presented with the Sunflower Award from the Kansas Association of City/County Management.  In 2015, he was recognized with the Buford M. Watson, Jr Award for Excellence in Public Management by the Kansas Association of City/County Management.  In 2007, the Olathe Character Council, awarded him with the Character Award for City Government. He was selected and graduated as a member of the 2005 Class of Leadership Kansas and was named Olathe Citizen of the Year in 2001. Michael was also recognized as one of Olathe's 150 Most Notable People (#58) in honor of Olathe's Sesquicentennial celebration in 2007.

Michael attends Life Church, Overland Park. He is married to Holly, and they have two grown daughters, Rachel and Hannah.