Miller began her career in 1994 as an assistant engineer in the Water Resources Group with RBF Consulting. Throughout her 23 years of employment with RBF, she was promoted to project engineer, project manager and eventually vice president, responsible for managing the Irvine office's water resources department. In 2017, Miller joined Hazen and Sawyer, where she is currently vice president and operations manager specializing in planning, design and construction of water supply, treatment, storage and conveyance facilities. She also manages and oversees a team of environmental engineers and scientists for Hazen's Irvine office.
An active member of the UC Irvine Affiliates Group since 2003, Miller has served as the organization's president for two consecutive terms, and also is a member of AWWA, ASCE, AMTA, CA-NV AWWA and the CA Water Reuse Association. Additionally, she served on the Board of Directors for the Orange County Branch of ASCE and has participated in the ASCE Orange County Report Card since 2005. She won an ASCE Engineer of Merit award 2011.
In her free time, Miller enjoys running, hiking, road cycling and mountain biking. She has hiked Yosemite's Half Dome, Clouds Rest and the High Sierra Loop, and this past year, she hiked the Grand Canyon, Rim-to- Rim.