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