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.

Principals and Associate Principals

Matt Butts
  • PE
  • LEED AP
Civil Engineering
Associate 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

Mark Hettum
  • SE
  • PE
  • LEED AP
Structural Engineering
Principal, Structural Engineer

Mark Hettum joined Mackenzie in 1993. Mark manages the firm's operations and serves as the engineering principal on some of Mackenzie's most...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

Alison Hoagland
  • AIA
  • LEED AP
Architecture
Associate Principal, Architect

Alison Hoagland is a key leader on Mackenzie's retail team. Alison has worked on a range of project types in her time at Mackenzie, including...Learn More

Jeff Humphreys
  • AIA
  • CSI
  • LEED AP BD+C
Architecture
Associate 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
Associate 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

Terry Krause
  • AIA
  • NCARB
Architecture
Principal, Architect

Terry Krause leads Mackenzie’s retail team, bringing over 30 years of professional experience working with national retailers and developers....Learn More

Dave Larson
  • PE
Civil Engineering
Associate 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

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

Rich Mitchell
  • AIA
  • LEED AP BD+C
  • NCARB
  • GGP
Architecture
Managing Principal, Architect

Rich Mitchell joined Mackenzie as a project architect in 1989. Rich takes a holistic approach to design, balancing client goals with stakeholder...Learn More

Bob Thompson
Architecture
Principal, Architect

Bob Thompson specializes in the planning and design of industrial manufacturing and distribution facilities. Bob has designed more than 25 million...Learn More

Dietrich Wieland
  • LEED AP BD+C
Architecture
Associate 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

Dennis Woods
  • LEED AP
  • NCARB
Architecture
Associate Principal, Architect

Dennis Woods joined Mackenzie in 1977 after graduating from the University of Oregon and working for a year for a small firm in Salem, Oregon,...Learn More