Pittsburgh-based System One acquired ALTA IT Services, a Rockville, Md.-based company providing IT staffing and consulting to government agencies and commercial clients.

The transaction closed Dec. 28; terms were not disclosed.

ALTA becomes a wholly owned subsidiary of System One Holdings, LLC, and the company will operate in alignment with System One’s IT division. The ALTA brand will remain for the foreseeable future.

ALTA CEO Howard Stein is retiring at the end of this year. Executive VP Rich Paolicelli, who has worked with Stein for many years and has been with ALTA since 2007, will assume the senior leadership role.

System One benefits from ALTA’s presence within the government sector; ALTA holds a Top Secret Facility clearance and works with federal government contractors as well as small businesses and commercial enterprises.

“Our firms’ combined service portfolio bridges the gap between business operations and IT expertise, offering our clients a proven path to efficient design and deployment of technology,” said System One President and CEO Troy Gregory. “We are excited to invest in the growth of this exceptional team and expand our reach in IT and government services. We look forward to bringing ALTA’s deep subject matter expertise and significant experience in IT to all of System One's clients.”

The transaction follows System One’s November acquisition of Precision Resource Company and its acquisition in July of the quality programs business from AECOM. System One maintains an active acquisition posture for 2016, according to the company.

System One’s core specialty areas include energy, engineering, IT, commercial, clinical and scientific, and industrial staffing and services. Its integrated services also include a proprietary vendor management system, legal e-discovery, utility smart grid installation, and quality assurance/quality control managed services.