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Meet Our Team Leads

Oregon SW Washington

Regional Director
“I aim to clear the way for folks to do their best work, so we leave with a sense of accomplishment, every day.”

Jon Yamashita

Regional Director, ORSWWA

Architecture
“My experience has always been focused on building practices… Being a focused, authentic leader who embraces, listens, and encourages is part of my DNA.”

Ralph Mocerino

National Practice Leader

Professional Registrations

Registered Architect (RA): Michigan
Construction Management & Inspection
“Problem solving and tangible results that can improve people’s lives make this my ideal line of work.”

Mike Williams

Manager of Construction Management & Inspection, Oregon & SW Washington

Environmental
“Otak has always provided me with the opportunity to chart my own course and surround myself with amazing, talented, and interesting people.”

Kevin Timmins

Director of Water & Natural Resources

Planning & Landscape Architecture
“My job allows me to blend my passions for building community and healthy natural environments.”

David Sacamano

PLA, LEED AP

Manager of Planning & Landscape Architecture, Oregon & SW Washington

PM/CM & Owner’s Representative
“I am inspired by the entrepreneurial, ‘can do’ drive that unifies every individual I’ve met at Otak. We actively pursue ‘better’ whenever possible.”

Sarah Oaks

Director of Project & Construction Management

Structural Engineering
“The best part of my job is seeing needed infrastructure (especially bridges) get designed, permitted, and built.”

Doug Sarkkinen

Director of Bridges & Structures

Survey & Mapping
“Being responsive to clients is essential to ensuring projects are completed efficiently and accurately.”

Sue Tsoi

Business Unit Leader of Survey

Transportation
“I advocate for safe, equitable, and resilient transportation access for all modes and mobilities.”

Amanda Owings

Manager of Transportation and Infrastructure, Oregon & SW Washington

Puget Sound

Regional Director & Engineering Lead

Nico Vanderhorst

Regional Director, Puget Sound

Environmental
“I enjoy working for an employer that has cultivated a culture which encourages employees to think big and to pursue our dreams.”

Russell Gaston

Director of Water & Natural Resources

Planning & Landscape Architecture
“I enjoy planning at various scales and understanding how people interact with spaces and environments to ultimately improve those experiences.”

Mandi Roberts

PLA, AICP, LID

Director of Planning & Landscape Architecture

Project Controls
“I love meeting new people and building relationships. ”

Walter Tarr

Manager of Project Controls

Structural Engineering
“The structural group touches a lot of projects and our role in each of them can vary greatly… I think one thing I do well is keeping a lot of tasks moving at the same time.”

Bob Doherty

PE

Senior Project Manager

Colorado

Regional Director
“Having a calm presence during chaotic times is a fundamental element to a successful outcome.”

Henry Alaman

Regional Director, Rocky Mountain Region

Active Transportation Group Lead
“When I can see a constructed project in Google Earth, I can see that I have literally changed the world.”

Scott Belonger

Senior Project Manager

Construction Management & Inspection
“Otak’s commitment to providing unique multidisciplinary solutions to our clients’ most pressing challenges is inspiring to me.”

Matt Marshall

Director of Business Development

Environmental
“Working at Otak allows me to experience interesting, exciting projects while furthering my professional and personal development. ”

Tracy Emmanuel

Manager of Water & Natural Resources, Colorado

Planning & Landscape Architecture
“There is a vibrant collaboration among my colleagues and when working closely with clients, this leads to successful projects we can all be proud of.”

Cliff Lind

PLA, LEED AP

Landscape Architect

Structural Engineering
“I look forward to every opportunity to work closely with local clients and serve the specific needs of those communities.”

Todd Kelley

Senior Project Manager

Professional Registrations

Professional Engineer (PE): CA | CO | ID | MO | WA Structural Engineer (SE): IL
Transportation Practice Area Leader
“An ability to see alternate solutions and innovative approaches helps me create stronger communities.”

Rick Belden

PE

Practice Area Leader

Transportation Business Unit Leader
“We think outside the box, pay close attention to aesthetics, and come up with cool project concepts because we love what we do.”

Kevin Dooley

Business Unit Leader of Transportation & Infrastructure