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