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