Your Partner in Project Management
Briant Thomas is Chief Operating Officer of Diaz-Thomas, where he leads firmwide operations and delivery standards for complex owner’s representative and project management engagements across North America. With more than 15 years of executive experience in utilities, infrastructure, and regulated markets, he brings a disciplined, data-driven approach to protecting owner interests and driving predictable project outcomes.
He specializes in PMO governance, portfolio controls, and cross-stakeholder alignment — integrating financial modeling, risk management, and field execution to keep major capital programs on schedule and on budget. Briant has led multi-state infrastructure deployments, operational turnarounds, and high-growth initiatives, and is known for translating executive strategy into measurable, jobsite-level results.
Your Partner in Project Management
Managing Member | President
Vivian Diaz Thomas is a co-founder and Managing Member of the firm, serving as President and providing executive leadership across strategy, operations, and client delivery. She is a licensed attorney in Peru and holds a doctorate degree, bringing a strong legal and analytical foundation to her work.
With more than 12 years of experience, Vivian offers deep expertise in real estate, contract law, and consulting, advising clients on complex transactions, risk management, and operational strategy. Her background allows her to bridge legal considerations with practical business execution—ensuring solutions are both compliant and commercially effective.
Known for her disciplined approach and attention to detail, Vivian plays a key role in establishing governance standards, overseeing contracts, and supporting strategic initiatives. Her leadership emphasizes integrity, accountability, and long-term value creation for clients and partners.
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Partner with Diaz-Thomas LLC for expert project management consulting. Let us lead your project to success with our unparalleled expertise and client-focused approach.