Though the application deadline was November 4, this post gives you an idea for the type of position you might want to look for in the future.
The MD-DE-DC Water Science Center is looking to hire two Physical Scientists to work with the Fate and Bioremediation team. Duties include field and lab work, as well as data review and management. Applications are being accepted for both GS-5 and GS-7 grade levels. The positions are open to Recent Graduates. See the vacancy announcement for more details:
https://www.usajobs.gov/job/