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