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