Greg Lignelli

System One Holdings LLC provides staffing, workforce solutions, and integrated services. It serves the energy, engineering and transit, scientific, clinical, healthcare, professional, commercial and industrial, information technology, legal, telecom, marketing. technology, and marine industries. The company was founded in 2008 and is headquartered in Pittsburgh, PA.

System One, Inc. operates as Commercial banking. The company is headquartered in Columbus, OH.

Spec Group, Inc. provides skilled technical workforce to the electrical power and primary process industries. The company is headquartered in Atlanta, GA.

All Systems Holding LLC engages in the provision of managed staffing and technical outsourcing solutions. It serves the energy, engineering, information technology, legal, and telecom industries. The company was founded in 2008 and is headquartered in Pittsburgh, PA.

Hudson Energy Services LLC provides retail electricity and natural gas services to commercial, industrial, and residential customers. It serves markets in Texas, Illinois, New York, New Jersey, Massachusetts, Pennsylvania, Ohio, and California in the United States; Ontario and Alberta in Canada; and the United Kingdom. The company was founded in 2002 and is headquartered in Albany, NY.