December 24, 2025

Mayer/Reed

Warmouth

Drew

O'Brien

Simms

Landscape architect Shannon Simms has been promoted to principal at Mayer/Reed. In this role, she co-leads the firm's urban design and landscape architecture group alongside Principal Jeramie Shane. Simms is experienced in public open space design with particular expertise in multimodal streetscapes. She is currently engaged in efforts to reimagine downtown Portland as a livable neighborhood and strengthen its relationship with the Willamette River. Her recent projects include the Green Loop Concepts and West End Street Plazas in Portland, and the Riverwalk in St. Helens, Oregon.

Landscape architect Michael O'Brien has been promoted to associate. With more than 30 years of professional experience, O'Brien brings design and management expertise and is valued for his mentorship of emerging landscape architects. He focuses on site context, ecological function and human experience. O'Brien's recent projects include Oregon Health and Science University's Children's Hospital expansion and Errol Heights Park in Southeast Portland.

Senior visual communications designer Margaret Drew has been promoted to associate. Drew approaches planning and designing wayfinding systems with an eye to being inclusive and to informing, guiding and connecting people across differences in language and ability. Her recent work includes leading signage standards for Multnomah County Library's 15-branch system.

Content coordinator/editor Stefanie Warmouth has been named associate, in recognition of her vital role in quality control, and promoting Mayer/Reed's story and culture by providing copyediting and communications expertise. Warmouth's recent initiatives include managing the firm's social media presence, and project-managing its 2025 Portland Winter Light Festival installation at Mill Ends Park.