InterMountain Management & Residence Inn by Marriott Columbia, MO. There are many reasons you would like to work for InterMountain Management and. Residence Inn by Marriott Columbia, MO. While we believe a job well done is its own reward, we also realize that benefits for full-time employees like health insurance, vacation time, and competitive compensation are valuable incentives. We want our associates to enjoy coming to work, and we strive to ...