Mental Health Worker - Per diem. Riverview Psychiatric Center. Located in Augusta, Maine. This is a PER DIEM contracted position. $25 hourly. Greatest need are overnights shifts, 7 p.m. to 7 a.m. (flexible). Full-time State of Maine positions are available - please see. https://www.maine.gov/dhhs/riverview/careers-internships/open-positions. for more details. Be a positive influence and make an impact in the lives of your community and within you...