If you are interested in opportunities that align with your goals to make an impact in sustainability, one tool you should leverage is climatebase.org. This site posts numerous opportunities with a sustainability focus. Simply go to their job search, and use the filters to indicate your experience level & location to narrow your search.
A quick search identified some current opportunities in MA:
Sales – Entry Level – Trinity Solar
Intern – Supply Chain — Commonwealth Fusion Systems
Verification & Validation – Data Science Internship Zoox
Public Policy Intern – Commonwealth Fusion systems
Put it on your calendar to check this resource periodically!