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