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