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