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