Nunnally started with Swinerton in 2005 as a Project Engineer in San Diego and remained in core operations for eight years, quickly rising to Project Manager and gaining experience in numerous markets. After taking a brief hiatus to continue her education, she returned part-time in 2013 to support the CMiC initiative and process study of operations. Nunnally completed her Master of Business Administration at the University of Pennsylvania Wharton School of Business. She rejoined Swinerton full-time in 2014 as Director of Support within the Business Technology group, working to reorganize and focus IT on the business of construction.
In 2017, Nunnally pivoted to General Manager for Craft Services, where she was charged with developing a new corporate department to enable the expansion and profitability of Swinerton’s self-perform operations. Nunnally and her team worked to establish standardized processes for all craft employees, with a heavy emphasis on craft recruiting, training, and development.
Assuming the role of Vice President and Chief Talent Officer in 2019, Nunnally focused on aligning and adapting Swinerton's overall talent strategy to its business strategy, leading and driving continuous improvements to workforce planning; talent acquisition, development, and mobility; and succession planning efforts. In 2021, she was promoted to Senior Vice President, and Nunnally became the youngest board member elected to the Swinerton Incorporated Board of Directors.