Team / Our people Meet Our Experts FilterIng by Service Civil & Transportation Engineering Construction Management Landscape Architecture Mechanical Engineering Public Works Administration and Permitting Surveying / GIS Solutions Water Resources Professional Support Services 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 Alexandra Cass Associate Engineer Brett Hadley, PE, QSD/P Senior Civil Engineer Lonnie Richardson Senior Project Analyst Gabriela Mendoza Marketing Coordinator Zac Powell, EIT Associate Engineer Samar Saliba Accounting Wen Bin Sullivan, PE Civil Engineer Nick Sine, LSIT Survey Technician Olivia Williams Associate Engineer Nancie L. Adams, PE Senior Civil Engineer Valerie Huff, PE Senior Civil Engineer Zach Markow, PE Civil Engineer Zachary Teske, PE Director of Construction Management Ryan Burmaster Survey Technician George Marchenko, PLS Senior Land Surveyor Rachel Hawthorne, PE Director of Civil and Transportation Engineering Kathy Redden Executive Assistant Zachary Caipang, EIT Associate Engineer Suzanne Baird. PLA 6114 Landscape Architect Sarah Huffman, PE Civil Engineer Cris Disarufino Senior Civil Designer Tony Scalise Assistant Resident Engineer Matt Wilkins, PLA, ASLA, APA Director of Landscape Architecture Michael Hausman, PE Civil Engineer Bill Callahan Senior Environmental Compliance Specialist Travis Vasquez, PE Associate Engineer Bill Lindahl Senior Mechanical Engineer Paula Cappiello Senior Accountant Ann Sever, PLA 4038 Senior Landscape Architect Daniel Herrera Survey Technician I Bryce Dilger, PLS Senior Land Surveyor II Ralph Schell Senior Civil Designer Clayton Bradshaw, PE, PLS Director of Surveying Steven Tanaka, PE, CSI, CCS Principal Civil Engineer Elvira Morla-Camacho, PE, QSD/P Senior Civil Engineer Jenni Metzger Project Analyst Alvaro Escobedo Associate Engineer Matt Valez Office Manager Julie Rae Wilson Controller Marco Castaneda, PLS Professional Land Surveyor Josh Whipple Senior Mechanical Designer Glenn Rider Senior Environmental Compliance Specialist Tim Peterson Project Analyst Compliance Inspector Ethan Pence, PE Civil Engineer Anthony Lehman Assistant Resident Engineer Luz Garcia, PLS Professional Land Surveyor Greg Hulburd, PE, QSD/P Civil Engineer Nate Whitcare, PE Senior Designer John Wallace, PE Consulting Engineer Erik Rutherford, PE Senior Mechanical Engineer Skye Thomas, PLS Senior Land Surveyor Craig A. Campbell, PE, PLS Consulting Engineer Mark Madonna, PE Survey Technician Bryan Childress, PE Senior Mechanical Engineer Jenna Mitchell Human Resources Manager Conner Kelly, PE Associate Engineer Want to make our communities better? Join Our Team More Of Our Projects