Key Systems, Inc.

Key Systems is a commercial electrical contractor serving the Mid-Atlantic region, with a track record in schools, libraries, health care facilities, marinas and government buildings. The firm handles new construction, renovation and tenant finishes, and says much of its work comes from repeat clients.

The company runs a 24/7 emergency service division for existing clients and the community. It is based on Philadelphia Road in White Marsh, Maryland, and is hiring experienced commercial service mechanics.