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