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