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