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