Mackenzie draws strength from the diverse talents and specialties of our staff. Click on the photos to get to know the members of our integrated team. Looking for a particular person, capability, or job function? Use the filter options or search field below.

Directors, Department Heads, Design Principals, and Corporate Advisors

Brent Ahrend
  • PE
Transportation Planning
Senior Associate, Assistant Department Head - Transportation Planning

Brent Ahrend combines technical skills in transportation analysis and modeling with strong communication and demonstrated abilities to provide...Learn More

Peter Alto
Architecture
Associate Principal, Architect

A graduate of the University of Oregon, Peter Alto has more than three decades of architectural experience. Peter manages the majority of...Learn More

Bill Bezio
  • AIA
  • NCARB
  • LEED AP
Architecture
Senior Associate, Department Head - Architecture

Bill Bezio has more than 30 years of professional experience in architectural design and construction project management. Over the course of his...Learn More

Matt Butts
  • PE
  • LEED AP
Civil Engineering
Principal, Director of Civil Engineering & Transportation Planning

Matt Butts leads Mackenzie's Civil Engineering and Transportation Planning departments. Matt manages most of the firm’s infrastructure and...Learn More

Rusty Gesner
Architecture
Associate Principal, Corporate Advisor - CAD/BIM

Recognized in 2007 by Autodesk as a “Legend of AutoCAD”, Rusty Gesner is one of the industry's foremost software experts. A licensed architect,...Learn More

Brett Hanson
  • AIA
  • GGP
  • LEED AP
  • NCARB
Architecture
Associate Principal, Architect

Brett Hanson has been involved in the design of complex projects across the Pacific Northwest, including fire and police essential facilities, and...Learn More

Susan Higbee
  • NCIDQ #8724
Interiors
Corporate Advisor - Interiors and HR

Susan Higbee joined Mackenzie in 1989. Susan’s long career has been characterized by her commitment to providing exemplary client service and...Learn More

Jeff Humphreys
  • AIA
  • CSI
  • LEED AP BD+C
Architecture
Principal, Director of Architecture

Jeff Humphreys has focused his career on the assessment, design, and development of public projects, with a specialization in essential facilities...Learn More

Lynne Ingram
  • NCIDQ #10058
Interiors
Principal, Principal of Design - Interiors, Director of Interior Design

Lynne Ingram is Mackenzie’s Principal of Design - Interiors. Lynne brings nearly 30 years of design and project management experience, and has a...Learn More

Todd Johnson
Land Use Planning
Associate Principal, Director of Land Use Planning

Todd Johnson has decades of planning experience in the Pacific Northwest. Todd, a member of NAIOP Oregon’s board of directors, is sought after for...Learn More

Paul Kisling
  • AIA
  • NCARB
Architecture
Principal of Architecture

Paul Kisling’s long career includes professional experience both in architectural design and project management roles in construction and private...Learn More

Dave Larson
  • PE
Civil Engineering
Principal, Branch Manager - Vancouver, Civil Engineer

Dave Larson—both a licensed civil and traffic engineer—led the civil and traffic engineering departments at Mackenzie for more than 26 years....Learn More

David Linton
  • SE
  • PE
Structural Engineering
Senior Associate, Structural Engineering

David Linton is a project engineer in Mackenzie's structural group. He has worked on a range of high tech, retail, and industrial projects at the...Learn More

Jan Mason
Marketing
Associate Principal, Director of Marketing

From assistant to the president to landscape designer, Jan Mason has served many roles in her career at Mackenzie. She became head of the firm's...Learn More

Barb McCullough
  • SPHR
Administration
Associate Principal, Director of HR & Administration

Barb McCullough enjoys working with people, which explains why she splits her time between managing the accounting department and being the main...Learn More

Josh McDowell
  • SE
  • PE
  • LEED AP
Structural Engineering
Principal, Director of Structural Engineering

Josh McDowell leads Mackenzie's structural engineering practice, and has over two decades of experience in the field. Josh oversees the structural...Learn More

Tim Schweitzer
  • SE
Structural Engineering
Associate Principal, Department Head - Structural Engineering

During his long tenure at Mackenzie, Tim Schweitzer has provided design for a variety of structures including the design of tilt panels, concrete...Learn More

Morgan Toth
  • NCIDQ #29802
Interiors
Associate Principal, Department Head - Interiors

Morgan Toth brings exceptional abilities in communication, relationship building, and project management, and serves as the primary contact for...Learn More

Dietrich Wieland
  • LEED AP BD+C
Architecture
Principal, Director of Sustainability, Architect

Dietrich Wieland brings a breadth of diverse professional experience including mixed-use, urban redevelopment, commercial, retail, financial, and...Learn More