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