who we are


Guiding our long-term vision and daily operations

The leadership of Parametrix is committed to increasing company stock value and growing the business in alignment with our Strategic Plan. Our leadership is made up of solutions-oriented individuals who make sure the company upholds our commitments to provide outstanding client service and quality work through collaboration and a spirit of employee ownership. Parametrix is governed by a Board of Directors and daily operations are managed by a Leadership Team representing our regions and corporate services. 

Board of Directors  /  Leadership Team

Parametrix Board of Directors

Waite Dalrymple
Chairman of the Board,
Founder of Parametrix,
Former CEO

As one of the founders of Parametrix, and the former CEO, Waite's insight and knowledge of Parametrix is invaluable. He is a champion of employee ownership and has been an active leader in the ESOP community. In 2007, Waite was awarded the ESOP Association’s Life Time Service Award.

Jeff Peacock, CEO | Parametrix

Jeff Peacock
Chief Executive Officer

Jeff joined Parametrix in 1990 as a transportation staff engineer. In 2008, he became president and chief executive officer. He is responsible for overall company growth and profitability. Jeff oversees company-wide operations, strategic planning, and business development activities.


John Willis

John joined Parametrix in 2017 and served as the senior vice president overseeing the operations in Oregon and Southwest Washington prior to being appointed President in 2022. John has over 25 years of experience in the A&E industry in a variety of leadership roles and has managed some of the region’s most significant infrastructure projects.


Eleanor Allen 
CEO of B Lab Global

Eleanor joined the Board in 2018. She currently serves as the CEO of B Lab Global, the nonprofit network that is transforming the global economy to benefit all people, communities, and the planet. Eleanor began her career as a Peace Corps volunteer, spent over 20 years as a consulting engineer with CH2M (now Jacobs) and Arcadis, and most recently was the CEO of Water For People.

Frank Buhler

Frank Buhler
Principal, Zachary Scott & Co. Investment Bankers

Frank specializes in business valuations, mergers and acquisitions, and private placements. He joined Zachary Scott at its inception in 1991, and became a principal in 1996. Frank also serves on the board of Little Red Services and St. Joseph School Endowment Fund.

Tim Jenkins, Parametrix Board of Directors

Tim Jenkins
Co-Founder, Point B

Tim joined the Board in 2015. He is the co-founder of Point B, a national management consulting firm that works in a wide variety of industries. Before founding Point B, Tim worked for several years at Andersen Consulting (now Accenture) before leaving to lead a number of projects at Seattle Children’s. He is also the President of Colchuck Companies.

Blake Murillo
Past Chairman of the Board, PSOMAS

Blake joined the Board in 2013. He worked for over 45 years at PSOMAS, a design firm based in Los Angeles, CA that specializes in transportation, water/wastewater, and land development and has an ESOP. He served as both the CEO for 14 years and then Chairman of the Board until 2018. He is a registered professional engineer in California and serves on the boards of two other engineering firms, one in Detroit, Michigan and one in Meridan, Connecticut.   



Sielen Namdar
Industry Executive | Global Sustainability Lead for Industries, Cisco

Sielen joined the Board in 2022. She currently serves as Cisco's Global Sustainability Lead for Industries, building Go-to-Market strategy and key alliances for innovative technology solutions. She also serves as Cisco’s Global Diversity & Inclusion Lead. Sielen is a Board Member for Seattle Leadership Tomorrow (LT) and serves as the Partnership Chair for Smart Water Networks Forum (SWAN).

John Okamoto, Parametrix Board of Directors

John Okamoto
President, Okamoto Strategies

John joined the Board in 2015.  John has a long career of leadership serving in executive roles for the Port of Seattle, Washington State Department of Transportation, and City of Seattle. He has served on several boards including American Public Works Association, Mountains to Sound Greenway, Leadership Tomorrow, and Bakke University.

Who We Are

"What I value most about Parametrix is the opportunity the company has afforded me to grow my career and be involved in projects that make a difference in the larger community."

Denise L., former Board of Directors Employee-Owner Representative