Its neighbour to the north, Romania, may be in a similar situation, for the same reasons. It lost 6 million people since 1990, with several million each living in Spain and Italy.
The possibility of living comfortably in a peaceful rural environment is also a big attraction of Romania, and I moved out to the country myself a few years ago. In addition to cheap property in villages, there is often gigabit internet as well, which makes these places even more appealing for knowledge workers and people who consume a lot of content. The shopping in rural areas, and the availability of "hipster foodstuffs" there, also seems much better than in a lot of Bulgaria.
The education system pretty much sucks here, IMO, but most good devs got so by being interested in their field. I would say fresh grads as worse than those in other countries.
I find it interesting that the best people tend to cluster together. I live in one of the bigger cities in RO and in my field it seems everyone knows everyone and the most experienced ones tend to hang together.