Chicago-based professional staffing firm Addison Group acquired AIM Consulting, a technology consulting firm with headquarters in Seattle and branch offices in both Denver and Minneapolis. The acquisition strengthens Addison Group’s presence in these key markets and adds AIM Consulting’s leadership team and customer portfolio.

The deal closed April 17; terms of the transaction were not disclosed. AIM Consulting’s leadership team will remain, and the official company name will be AIM Consulting, an Addison Group Company.

AIM Consulting provides clients with consultants as part of its full-cycle IT consulting services with a portion of its revenue coming from high-end IT staffing. The company was founded in 2006 and counts more than 400 customers.

“With the acquisition of AIM Consulting, we saw a clear opportunity to merge Addison Group’s proven performance in IT staffing with a powerful technology solutions and services provider,” said Addison Group CEO Thomas Moran. “Given the operational and cultural similarities of our two firms — this partnership is an exciting opportunity to evolve how we bring the right people together with the right companies to do great work.”

Prior to the acquisition, Addison Group has 18 offices nationwide and more than 650 employees. Targeted sectors include IT, finance and accounting, healthcare, HR and administrative, engineering and executive search.

Last December, private equity investment firm Odyssey Investment Partners LLC made an investment in Addison Group to support Addison’s organic and acquisition growth strategy. Odyssey is now the majority owner of Addison.