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