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