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