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