Part Time, Monday to Friday, 4:30pm to 8:30pm. Position Overview. Under the direction of the Assistant Facility Supervisor, the Custodian is responsible for the cleaning and maintenance of the first floor and stairwells of the Bouchard Building, located at 329 Mast Road, Goffstown, NH. ensuring a clean and safe environment for all employees and visitors. General Responsibilities. The Custodian will be responsible for the cleaning of all administr...