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