Strategic Advocacy in Technology, Procurement & Regulatory Law

Sean Gellis has built a sophisticated practice focused on technology, procurement, regulatory matters, and transportation. A Board Certified specialist in State and Federal Government and Administrative Practice—a distinction held by fewer than 75 Florida attorneys—Mr. Gellis has established himself as a formidable advocate in complex litigation, administrative proceedings, and appeals.

As former Chief of Staff of the Department of Management Services—Florida’s central technology and procurement agency—Mr. Gellis offers clients unique insight into government technology initiatives and procurement strategies. His experience includes overseeing Florida’s State Data Center transformation and managing complex technology acquisitions worth hundreds of millions. As a Certified Information Privacy Professional (CIPP/US), he brings specialized expertise to technology matters, helping clients navigate complex privacy and data protection requirements in an increasingly regulated digital landscape.

Mr. Gellis’s previous role as FDOT General Counsel provides additional strategic advantage in transportation infrastructure and regulatory compliance matters. This diverse background enhances his ability to develop effective legal strategies, particularly in complex cases involving technology implementations, digital transformation initiatives, procurement challenges, and regulatory compliance.

With over 100 successfully litigated cases and more than 20 appeals in state and federal courts, Mr. Gellis brings a proven track record of success to challenging legal matters. His litigation experience spans technology procurement disputes, data privacy matters, complex administrative proceedings, and transportation controversies. Whether navigating sophisticated technology contracts, challenging improper procurement actions, or defending against multi-million dollar enforcement actions, he combines aggressive advocacy with strategic thinking to achieve optimal results for his clients.

Through FloridaProcurements.com, Mr. Gellis regularly analyzes developments in government technology and procurement, maintaining current insight into industry trends and opportunities. This breadth of experience allows him to address sophisticated legal challenges from multiple angles, finding innovative solutions where others might see only obstacles.

Mr. Gellis’s practice reflects his commitment to sophisticated advocacy and practical results. From guiding major technology implementations to resolving complex procurement disputes, he has demonstrated an ability to navigate both legal complexities and business realities effectively. His AV Preeminent® Rating from Martindale-Hubbell reflects the highest level of professional excellence and ethical standards as recognized by his peers.

For representative examples of Mr. Gellis’s experience in technology, procurement, and transportation matters, please visit our Results page.