TriNet cut the ribbon Wednesday, Aug. 19, on a 150,000-square-foot corporate hub at High Street, bringing 750 planned jobs to Dunwoody's flagship mixed-use development.

President and CEO Mike Simonds and Chief People Officer Catherine Wragg led the ceremony, joined by Mayor Lynn Deutsch and the Atlanta Braves Heavy Hitters drumline. The City of Dunwoody confirmed the event on its official social media account.

The California-based HR technology company processed $70 billion in payroll in 2025. TriNet chose the High Street location after a multi-state search, according to a city press release issued when the lease was announced in May 2025. At the time, the deal was described as Atlanta's largest office transaction of that year.

TriNet's hub will house teams in technology, HR consulting, client management and sales, according to the company. The Atlanta Business Chronicle reported the office features art displays honoring Atlanta and described it as a "first step in a larger plan" to grow in the Southeast.

When the lease was announced in May 2025, Wragg said the company was "thrilled to bring our business to Dunwoody," citing proximity to strong universities and a prosperous small business community. Mayor Deutsch said at the time that TriNet's selection "highlights Dunwoody as a desirable location to both live and work."

High Street, developed by GID, broke ground in November 2021 on 36 acres of former parking lots near the Dunwoody MARTA station. The $2 billion project's completed first phase includes 320,000 square feet of office space, two luxury apartment buildings and 150,000 square feet of retail and restaurant space. At full buildout, plans call for 672,000 square feet of Class A offices, two hotels, 400,000 square feet of shopping and dining and 3,000 residential units.

TriNet previously maintained a smaller Atlanta-area office at 211 Perimeter Center Parkway NE in Dunwoody. The company serves roughly 323,000 worksite employees nationwide.

TriNet expects to fill the 750 positions over five years as it charts broader growth across the Southeast.