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