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