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