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