About Sean

Sean Gellis brings unique insight to transportation law as the most recent Florida Department of Transportation General Counsel to enter private practice. Having supervised 122 legal professionals across FDOT’s seven districts, central office, and the Florida Turnpike, and directed legal strategy for a $12 billion work program, he understands transportation matters from both operational and regulatory perspectives.

As founder of Gellis Law, PLLC, Sean provides sophisticated counsel in transportation, technology, and procurement matters, drawing on his experience as both FDOT General Counsel and Chief of Staff of the Department of Management Services. Board Certified in State and Federal Government and Administrative Practice—a distinction held by less than 75 Florida attorneys—he combines proven litigation success with deep regulatory understanding.

With over 100 successfully litigated cases and dozens of appeals in state and federal courts, Sean has established a reputation for effective advocacy in complex transportation matters. Now unrestricted by post-employment limitations, he offers clients immediate access to sophisticated counsel enhanced by current industry insight.

Through FloridaProcurements.com, Sean regularly analyzes developments in transportation procurement, sharing strategic insights with industry stakeholders. This commitment to thought leadership reflects his dedication to Florida’s transportation sector.

Whether guiding clients through major infrastructure projects, technology implementations, or regulatory challenges, Sean combines sophisticated advocacy with practical business solutions to achieve optimal results.