I used QGIS 2.x and 3.x a lot when making maps for research papers. But something that always stung was reproducibility. The python tooling was not there compared to what I could do with click-and-mouse, and there was no easy way to transfer my click-and-mouse sessions into an equivalent python script.
Is the situation unchanged? (Maybe a good use for Opus would be to write a wrapper for the python tooling?)
If you are in early career (i.e. graduated your PhD within the last 5 years) you are extremely unlikely to get the gifted people visa. The standard approach is to just get the H1B (not the lottery stuff for tech companies but the non-lottery one for hiring faculty at universities). Ask any foreign MIT professor hired early in his career and they went through H1B (and later on, they are more reluctant to move into a place like Florida..)