May 20, 2026

Cameron MacAllister Group

Ferriss

Davis

Bergeron

Dennis-van Dijl

Frantz

Wilson

Gilday

Cameron MacAllister Group (CMG), a California-based consulting and marketing firm serving A/E/C clients throughout the country, has added seven principals to its ownership team: Kate Frantz and Saskia Dennis-van Dijl who are based in the Pacific Northwest, and Tiffany Bergeron, Clark Davis, Lori Ferriss, Larisa Forester Gilday, and Scott Wilson who serve clients nationwide including the Seattle area.

CMG was founded 40 years ago by Mark Cameron and has now grown to a team of 20. Cameron is stepping down from formal ownership and will remain active as a consultant.

Parametrix

Arizmendiz

Randy Arizmendiz has joined Parametrix as a senior principal engineer. He brings 20 years of experience planning, designing, and delivering advanced wastewater treatment systems for municipal and industrial clients throughout the West Coast.

Arizmendiz comes to Parametrix from Revida Water, where he served as vice president of engineering and construction. His experience includes large-scale organics-to-energy facilities, anaerobic digestion and renewable natural gas systems, advanced wastewater treatment, industrial water reuse, and integrated energy recovery infrastructure.

At Parametrix, he joins the firm's water division, which provides electrical and supervisory control and data acquisition, flood control, stormwater, wastewater, and drinking water services to cities, counties, water districts and others throughout the Northwest.

May 13, 2026

Reid Middleton

Bishop

Stapleton

Matsumoto

Crocker

Hammer

Reid Middleton has appointed Corbin Hammer as president, Paul Crocker as chief operating officer, Brian Matsumoto as group director of structural engineering, and Seth Stapleton and Erik Bishop as principals working in the firm's Everett headquarters.

Hammer joined Reid Middleton in 2002 as a structural engineering intern before advancing to structural group co-director. His experience includes leading fire station design across the Pacific Northwest, seismic evaluations and consulting, and federal/military work across the U.S. and internationally.

Crocker joined in 2004. His leadership, supported by strong organizational and technical skills, contributed to him becoming structural group co-director with Hammer in 2018.

Matsumoto has been with the firm since 2014. He's a client-focused leader who excels at building enduring relationships.

Stapleton has 20 years of structural engineering and project management experience and joined the firm in 2017. He has expanded the firm's structural projects for King County, federal agencies, school districts, and housing and mixed-use developments.

Bishop has been with the firm for 15 years and continues to champion its seismic resiliency efforts, leading numerous seismic evaluation, upgrade, and response plan projects for federal/military, private and healthcare clients.

Architects West

Valentine

Marcus Valentine, a principal with Architects West, has successfully completed the Design-Build Institute of America's comprehensive education and certification testing program to become a nationally certified Design-Build Professional.

Over his 16 years with Architects West, Valentine has focused on serving municipal clients, leading projects ranging from city halls to fire station facilities. His work emphasizes functionality, community impact, and long-term value for public-sector clients.

In addition to municipal work, Valentine has partnered with several Native American Tribes throughout the Northwest, contributing to a wide range of project types that support cultural, civic and community needs.