Private equity firm Olympus Partners acquired Staffing provider Vaco from Quad-C Management Inc., a middle market private equity firm. Quad-C reported Vaco management was also an acquirer.

Terms of the transaction were not disclosed. The deal closed Nov. 9.

Quad-C invested in Vaco in 2014 in partnership with its management team. Vaco completed seven acquisitions during Quad-C's ownership, expanding its service offerings into healthcare IT and extending its geographic footprint domestically, as well as into Canada and India. Most recently, Vaco in August acquired Lannick, a finance and accounting professional recruitment and consulting firm serving the Greater Toronto Area. Including Lannick’s projected revenue of $40 million for 2017, Vaco’s revenue for 2017 is expected to surpass $458 million. The deal was Vaco’s largest acquisition to date and its second international acquisition in four months.

Founded in 2002 and based in Nashville, Tenn., Vaco operates more than 35 offices worldwide, with more than 780 employees and 4,300 consultants. Vaco provides consulting, contract and direct hire services in sectors including accounting, finance, technology, healthcare, operations and administration.

“We are beyond ecstatic to partner with Olympus,” said Vaco Founder and CEO Jerry Bostelman. “Their contribution will be invaluable as we explore how to more cohesively deliver our complete solutions to clients, expand our service lines and geographies throughout the globe and institutionalize the essence of Vaco to ensure its eternal viability.”

Stamford, Conn.-based Olympus Partners manages more than $5.5 billion on behalf of corporate pension funds, endowment funds and state-sponsored retirement programs.