Elson Callejas has been with Campus Services, Facilities Management (FMO) since 2006.  Originally from Guatemala, he began his career with Harvardand not long after emigrating to the United States.  He began as a part-time custodian working his way up to a full-time custodial crew chief in 2011 and a custodial supervisor one year later.  Today, Elson is a Custodial Manager while also working towards his Associates in Applied Sciences at Wentworth Institute of Technology.