Meet Our Experts
Our Principals
Brad Brechwald, PE, PLS
CEO, President
Thomas Zehnder, PE
Principal
Jorge Aguilar, PE
Principal
Robert Miller, PE
Principal
Kari Wagner, PE
Principal and Director of Water Resources
Bryan Childress, PE
Principal and Director of Mechanical Engineering
Ryan Burmaster
Survey Technician
Matt Wilkins, PLA, ASLA, APA
Director of Landscape Architecture
Sarah Huffman, PE
Civil Engineer
Jenni Metzger
Project Analyst
Bill Callahan
Senior Environmental Compliance Specialist
Steven Tanaka, PE, CSI, CCS
Principal Civil Engineer
Jamie Platz, PE
Senior Civil Engineer
Skye Thomas, PLS
Senior Land Surveyor
Kathy Redden
Executive Assistant
Tina Mayer, PE
Principal Civil Engineer
Conner Kelly, PE
Associate Engineer
Marcus Jackson
Senior Program Manager
Mark Madonna, PE
Survey Technician
Heather Johnson
Reception & Admin
Glenn Rider
Senior Environmental Compliance Specialist
Bill Lindahl, PE
Senior Mechanical Engineer
Alexandra Cass
Associate Engineer
Valerie Huff, PE
Senior Civil Engineer
Luz Garcia, PLS
Professional Land Surveyor
Daniel Herrera
Survey Technician
Jamie Rogers
Marketing Coordinator
Ralph Schell
Senior Civil Designer
Paula Cappiello
Senior Accountant
Anthony Lehman
Assistant Resident Engineer
Zach Markow, PE
Civil Engineer
Erik Rutherford, PE
Senior Mechanical Engineer
Clayton Bradshaw, PE, PLS
Director of Surveying
Greg Hulburd, PE, QSD/P
Civil Engineer
Zachary Caipang, PE
Associate Engineer
Jenna Mitchell
Human Resources Manager
Suzanne Baird. PLA 6114
Landscape Architect
Brandon Puccini
Associate Engineer
Zachary Teske, PE
Director of Construction Management
Tony Scalise
Assistant Resident Engineer
Travis Vasquez, PE
Associate Engineer
Alvaro Escobedo
Associate Engineer
Ann Sever, PLA 4038
Senior Landscape Architect
Bria diCicco
Marketing & Business Development Manager
Bryce Dilger, PLS
Senior Land Surveyor II
Zac Powell, EIT
Associate Engineer
Cris Disarufino
Senior Civil Designer
Elvira Morla-Camacho, PE, QSD/P
Senior Civil Engineer
Nancie L. Adams, PE
Senior Civil Engineer
Sonil Kim
Assistant Resident Engineer
Lonnie Richardson
Senior Project Analyst
Nick Sine, LSIT
Survey Technician
Ioanna Bruno
Landscape Designer
Gabriela Mendoza
Marketing Coordinator
John Wallace, PE
Consulting Engineer
George Marchenko, PLS
Senior Land Surveyor
Brett Hadley, PE, QSD/P
Senior Civil Engineer
Wen Bin Sullivan, PE
Civil Engineer
Marilynn Connell
Landscape Designer
Alex Murray, PE
Civil Engineer
Josh Whipple
Senior Mechanical Designer
Matt Valez
Office Manager
Ethan Pence, PE
Civil Engineer
Nate Whitcare, PE
Senior Designer
Rachel Hawthorne, PE
Director of Civil and Transportation Engineering
Michael Hausman, PE
Civil Engineer
Tim Peterson
Project Analyst Compliance Inspector
Julie Rae Wilson
Controller
Marco Castaneda, PLS
Professional Land Surveyor
Samar Saliba
Accounting
Olivia Williams
Associate Engineer
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