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