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