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