A Lorton-based technology engineering firm is embarking on a $3.8 million expansion that is expected to create 555 jobs in Fairfax County, according to a Thursday announcement from Virginia Gov. Terry McAuliffe’s office.

The company was not able to provide additional information about the expansion, what kind of jobs would be created or the timeframe.

Iomaxis builds advanced cloud, mobile and network technologies for a mix of tech companies and federal agencies including the Pentagon, intelligence agencies, National Law Enforcement and the Department of Homeland Security.

McAullife credited Iomaxis’ expanding footprint to Virginia’s “unparalleled business climate, skilled workforce pipeline” and its “strategic access to the nation’s capital” — which represents the firm’s largest set of customers.

The initiative will be helped along by the Virginia Jobs Investment Program, a state-funded program out of the Virginia Economic Development Partnership that provides consulting…