The biggest improvement you can make is to make it obvious at a glance what your skillset is. I've skimmed over it, and I'm still not sure what you can do (note: you very clearly quash any doubts about your work status and location, so good job on that). The easiest way to do that is to put a 'summary' line at the top (or it can be a 'description' or 'objective' or whatever you want to call it). Maybe, "Full Stack Java developer with mobile experience" or whatever. Have it focus on the kind of job you want.

Since you have a lot of work experience, you might consider moving your education towards the bottom. Follow the principle of "make the most important stuff most obvious;" several years of experience should usually be higher up than a university degree.