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