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