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