I maintained Lithuanian localization of Mozilla software (Firefox, Thunderbird, SeaMonkey and Calendar) and websites pretty much alone since about 2006 until 2014.
After that, I managed to attract a few other guys to do this work and have been trying to become a proper leader for them ever since. This shepherding of a growing community is all new to me, so there is quite a lot to learn.
I haven't fully quit localizing though: I sometimes find myself doing some potentially unjustifiable L10n of Mozilla web pages late at night. On top of all that, I sometimes localize something (also potentially unjustifiable) outside of Mozilla.
At daytime, I'm currently a freelance web developer, localizer and support person for a small company in Vilnius. Although I'm afraid that most of the time I'm just a lazy couch potato. There's more info about my professional background on LinkedIn, if you're curious, however, it is probably not emphasized enough there how much stuff I still have to learn (or get used to) to really see myself as a pro in what I do.