Reposting with the agreement of @danielhuppmann
IIASA, based near Vienna, Austria is offering a 3–6 month internship for a research software programmer within its Energy, Climate, and Environment (ECE) program. Details:
See here for a list of of (mostly open‑source) tools that ECE develops.
@danielhuppmann adds: I’m sure there are some folks who are interested in energy modeling and climate research, but who are not drawn to doing a PhD. So if you want to see what it’s like to do scientific-software development supporting researchers in adopting better coding practices and making data and models more accessible, then this … might be for you!