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