Decker is a Hydrologic Technician with the USGS Colorado Water Science Center (COWSC), Western Colorado Office, in Grand Junction, Colorado
Decker began his federal career in 2011 working for the NPS at Zion national park. Since then, he has worked for multiple land management agencies doing a variety of fisheries and water work. In 2019 he started his career with the USGS working for the OWSC out of Klamath Falls Field Office. Decker has been working for the COWSC since 2021.