Here are few links and resources to get you started on your search:
Subscribe to the Earthscope community jobs mailing list:
If you are looking for an internship, there are 1000+ across STEM fields posted here:
Most US Federal Agencies have various internships. Most have a "Pathways" program"
Earthscope offers internships and permanent jobs:
If you are looking for graduate student, postdoc, or permanent positions:
Jet Propulsion Laboratory Jobs site:
You might need mentoring and/or a career coach to help you find the right position. If you are a student, your university may provide career services. Also, check out the AGU mentoring program: https://mentoring365.chronus.com/