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