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