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