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