Meet Our Experts
Our Principals
Brad Brechwald, PE, PLS
CEO, President
Thomas Zehnder, PE
Principal
Jorge Aguilar, PE
Principal
Robert Miller, PE
Principal
Kari Wagner, PE
Principal and Director of Water Resources
Bryan Childress, PE
Principal and Director of Mechanical Engineering
Matt Valez
Office Manager
Rachel Hawthorne, PE
Director of Civil and Transportation Engineering
Brett Hadley, PE, QSD/P
Senior Civil Engineer
Zac Powell, EIT
Associate Engineer
Ethan Pence, PE
Civil Engineer
Cris Disarufino
Senior Civil Designer
Paula Cappiello
Senior Accountant
Jenna Mitchell
Human Resources Manager
Nate Whitcare, PE
Senior Designer
Clayton Bradshaw, PE, PLS
Director of Surveying
Steven Tanaka, PE, CSI, CCS
Principal Civil Engineer
Alex Murray, PE
Civil Engineer
Wen Bin Sullivan, PE
Civil Engineer
Alvaro Escobedo
Associate Engineer
Brandon Puccini
Associate Engineer
Bill Lindahl, PE
Senior Mechanical Engineer
Nick Sine, LSIT
Survey Technician
Gabriela Mendoza
Marketing Coordinator
Ralph Schell
Senior Civil Designer
Bryce Dilger, PLS
Senior Land Surveyor II
Valerie Huff, PE
Senior Civil Engineer
Sonil Kim
Assistant Resident Engineer
Zachary Caipang, PE
Associate Engineer
John Wallace, PE
Consulting Engineer
Mark Madonna, PE
Survey Technician
Kathy Redden
Executive Assistant
Bria diCicco
Marketing & Business Development Manager
Daniel Herrera
Survey Technician
Marcus Jackson
Senior Program Manager
Ryan Burmaster
Survey Technician
Conner Kelly, PE
Associate Engineer
Ann Sever, PLA 4038
Senior Landscape Architect
Skye Thomas, PLS
Senior Land Surveyor
Samar Saliba
Accounting
Julie Rae Wilson
Controller
Sarah Huffman, PE
Civil Engineer
Jamie Platz, PE
Senior Civil Engineer
Olivia Williams
Associate Engineer
Matt Wilkins, PLA, ASLA, APA
Director of Landscape Architecture
Lonnie Richardson
Senior Project Analyst
Suzanne Baird. PLA 6114
Landscape Architect
Tony Scalise
Assistant Resident Engineer
Ioanna Bruno
Landscape Designer
Lee Faraca, PE
Civil Engineer
Luz Garcia, PLS
Professional Land Surveyor
Marco Castaneda, PLS
Professional Land Surveyor
Zachary Teske, PE
Director of Construction Management
Alexandra Cass
Associate Engineer
Josh Whipple
Senior Mechanical Designer
Jenni Metzger
Project Analyst
Bill Callahan
Senior Environmental Compliance Specialist
Marilynn Connell
Landscape Designer
Zach Markow, PE
Civil Engineer
Jamie Rogers
Marketing Coordinator
Heather Johnson
Reception & Admin
Michael Hausman, PE
Civil Engineer
Tina Mayer, PE
Principal Civil Engineer
Erik Rutherford, PE
Senior Mechanical Engineer
Anthony Lehman
Assistant Resident Engineer
George Marchenko, PLS
Senior Land Surveyor
Glenn Rider
Senior Environmental Compliance Specialist
Tim Peterson
Project Analyst Compliance Inspector
Greg Hulburd, PE, QSD/P
Civil Engineer
Travis Vasquez, PE
Associate Engineer
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