Skip to Content

Dewberry Announces Promotion of Resilience Experts in Atlanta, Georgia

Three promotions coincide with firm’s nationwide promotion of more than 65 professionals.

Duncan Hastie

Dewberry has announced the promotion of more than 65 employees nationwide, including three staff members in the firm’s Atlanta, Georgia, office. The promotions coincide with Dewberry’s ongoing expansion of engineering, architectural, and consulting services in the Southeast, where the firm has practiced since 1984.

Duncan Hastie, PE, has been promoted to senior vice president and regional water resources branch manager.

Shannon Brewer, CFM, PMP, has been promoted to associate vice president and serves as a department manager in the Atlanta office. She has extensive experience managing Federal Emergency Management Agency (FEMA) flood insurance study projects. Additionally, Brewer provides guidance to communities in the areas of floodplain management, flood insurance, and flood mitigation. She earned a bachelor’s degree in geography from the University of North Carolina at Greensboro (2000), and is a member of the Alabama Association of Floodplain Managers, Association of State Floodplain Managers, Georgia Association of Floodplain Managers, and the Project Management Institute.

Senior Project Manager Jarrett Mattli, GISP, CFM, has been promoted to associate. As a flood mapping analyst, he is involved in the production of digital flood insurance rate maps for counties across Georgia and the southeast. Mattli earned a bachelor’s degree in geography from Auburn University (2004) and is a member of the Association of State Floodplain Managers and Georgia Association of Floodplain Managers.

Shannon Brewer
Shannon Brewer
Jarrett Mattli
Jarrett Mattli

Related Insights

Working in groups, participants developed creative prototypes, including collages, games, plays, parks, fairs, and other engagement tools, to inspire community action.

September 24, 2026

This year, National Preparedness Month focuses on getting back to the essentials of preparedness, starting with understanding community risk. For resilience planners, knowing the risk is only the beginning. We also need to communicate risk in ways that are clear, relevant, and actionable for…

Blog

Healthcare Construction & Operations News

September 23, 2026

In this article for Healthcare Construction & Operations News, Melissa Covington and Heather Platt, PE, CHC discuss the modernization of Oklahoma State University Medical Center's labor and delivery facilities while maintaining ongoing hospital operations. The authors highlight the planning, collaboration, and innovative design solutions required to upgrade critical healthcare spaces within an existing facility and share key lessons learned for healthcare renovation projects.

Publication

Dimensions®

Our annual review and corporate social responsibility report, in one place.