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