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