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