Keymark Corporation of Florida is actively interviewing applicants for. Industrial Manufacturing Maintenance Technicians. for the night shift. These are full-time, 12-hour shifts from 6pm–6am with 4 days on, 4 days off rotating schedule. You will earn night shift differential pay of $0.75/hr added to your compensation. The Industrial Maintenance Technician role is offered hourly compensation ranging in annual earnings between. $50,000 - $80,000. ...