tere spm,
I don't know if Estonian Air is hiring presently, but as far as I know you could work for an Estonian company. Have you tried aero?
http://www.aeroairlines.com/
This is an airline recently established by finnair to compete on baltic routes and operate several ATR72 . Otherwise there are other smaller regional companies that fly Russian metal and focus a lot on cargo ops.
Generally speaking as Estonia is a relatively small country it has also a small turnover of pilots. But you could always give it a go.
if you want any more info you can mail me or send a PM.
good luck
Iso
edited: I just read your other post on Airlines, Airports & Routes. It could be difficult if you don't speak Estonain as it usually is a requirement when you apply. Otherwise if you speak Russian you might have a chance too.