Chicago-based professional staffing firm Addison Group acquired Mondo, a New York City-based IT and digital marketing staffing provider.

The acquisition adds a digital marketing vertical to Addison Group’s existing information technology business. Mondo also strengthens Addison Group’s presence in 10 US locations and adds two markets to its geographic footprint: Atlanta and Los Angeles.

Mondo will now operate as Mondo, An Addison Group Company. The transaction closed Dec. 3; terms were not disclosed.

Mondo will continue to operate within its current office spaces and retain executive operating leadership.

Mondo counts 190 employees and 10 offices.

Addison ranks on Staffing Industry Analysts’ list of largest staffing firms in the US. Last year, it acquired Bridgepoint Consulting, a Texas-based management consulting firm, and Seattle-based technology consulting firm AIM Consulting.

“The opportunity to leverage Addison Group’s proven performance and high-caliber information technology staffing teams across the country while expanding to LA and Atlanta was an extremely attractive one, and we are excited to expand our portfolio of services with the addition of digital marketing,” said Addison Group CEO Thomas Moran.

This story has been corrected from a previous version.