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