Dwight oversees the budget, strategic plan, and performance evaluation for King County, WA, the 14^th largest county in the United States.  He manages a staff of 43 and is on the senior leadership team for County Executive Dow Constantine.  The County has an annual budget of about $4 billion and is responsible for a wide array of services, including transit, courts, adult and juvenile detention, wastewater treatment, roads, elections, human services, public health, solid waste disposal, parks, and the Sheriff’s Office.

Prior to joining King County in early 2010, Dwight worked for the City of Seattle, WA. He started as an analyst with the City Council's central policy staff in 1987, eventually becoming the Staff Director. In 1994, he became the City's Director of Finance and held that position through early 2010. The Department went through many reorganizations during the tenures of different mayors, so Dwight has managed a wide array of functions including budgeting, debt issuance, investments, tax policy and administration, facilities, technology, human resources, vehicle maintenance, and consumer protection.

Dwight also serves as an Affiliate Associate Professor at the University of Washington's Evans School of Public Affairs. He teaches courses in budgeting, public finance, and political history. He has served on many finance-related task forces for the State of Washington, regional transit agencies, and school districts. He is a member of the Board of Directors of Benaroya Hall Music Center, Seattle's concert hall.  He serves as chair of the Northwest Regional Selection Panel for the Truman Scholarship Foundation.