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