The way to do this is to find non-domain specific tasks in these projects, and make useful contributions to the team - and slowly learning as you go along. Webs

The way to do this is to find non-domain specific tasks in these projects, and make useful contributions to the team - and slowly learning as you go along. Website, CI, benchmarking, helping out new users, pointing out unclear docs, writing a tutorial as you learn, etc. are all great ways to get involved.