heatish

I recently finished a full stack web development bootcamp from which I have experience in 3 different stacks. I'm looking to begin a career in Javascript, preferably node development and want to get some contributions to real life projects (outside of my small personal projects) to get on my resume and have some talking points about for interviews. I've gotten an interview or two so far but both have had concerns about my experience. I figure there couldn't be much of a better way to spend my time while applying for jobs than getting this kind of experience under my belt.

I don't really know where/how I would start with this though, do I just browse NPM, find some package that I'm familiar with, check the issues log and go to work on one? Do I approach the developers beforehand and get their thoughts/consent to work on something and submit a pull request, (putting all the work in for a pull request that gets ignored seems like it would be quite annoying)? I'm confident that I can contribute solid code, I guess the process itself is what I'm inexperienced with. If there is anyone on here that is in need of some open source junior level JS development please feel free to contact me, I'll be over at the Who's Hiring Thread.