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