Apex Systems, LLC is headquartered in Glen Allen, Virginia. The company was founded in 1995 by Brian Callaghan, Edwin Sheridan and Jeff Veatch, grew rapidly from an initial local IT staffing agency into a national and then global IT consulting and staffing firm, merged with On Assignment in 2012 to become one of the largest IT staffing firms in the US, and now operates as a core brand of Everforth (the corporate rebrand of NYSE-listed ASGN Incorporated, completed April 2026).
Apex's dedicated Infor consulting practice was substantially expanded through ASGN's June 2021 acquisition of the Infor business unit of Avaap, an enterprise solutions integrator with about 240 staff and 15+ years of experience implementing Infor Healthcare and Manufacturing solutions across the US and Europe, and recognized as a five-time Infor Partner of the Year in its own right prior to the deal. Since the acquisition, that team has operated within Apex Consulting Services, and Apex/Everforth Apex has gone on to be named a multi-time Infor Partner of the Year, including the 2026 Americas Source and Co-Sell Partner of the Year award, and describes itself as one of the largest Infor Partner Network Implementation (Co-Sell) partners with a specialization in Infor CloudSuite for Healthcare and Infor CloudSuite Manufacturing & Distribution.
Published case studies and partner pages tie the practice to Infor CloudSuite, Infor M3 and Infor Lawson: an ISPnext integration partner page names Creamy Creation as a joint Infor M3 CloudSuite/AP-automation customer, and an Apex case study on Infor process automation names Stryker as a long-standing Infor (Lawson) customer. Apex Systems overall reports tens of thousands of employees and consultants globally (company-wide staffing figures, not specific to the Infor practice), so a team-size figure is not asserted here to avoid overstating the size of the Infor consulting unit specifically. The firm's own apexsystems.com site returned a 403 on direct fetch during this research; the facts above draw on the company's own indexed pages via search snippets plus independent trade press covering the Avaap acquisition and the Everforth rebrand.