I know of two women who went to work in Australia when I was teaching English at The ICDA. I had a student who worked at the ministry of foreign relations and she showed me a list of places where Dominicans lived and I was astounded to see how spread out we were all over the world. There are Dominicans living in Norway, Alaska, Siberia, Congo, The Seychelle Islands, Nigeria, Vanuatu, South Africa, Ukraine, Tajikistan, Vietnam, etc...Places that you'd never expect.
I remember that my neighbor from The DR used to live or still lives in Central African Republic. She was the baby sitter of a high ranking official of that country. She was baby sitting their kids in New York and apparently they offered her all kinds of money to go back to their country and work for them over there. She then had her two kids join her over there. Very strange, I thought at the time, but I remember every once in a while she would come and visit the family she had left in The DR.
The way to find out is to call the Cancilleria in The DR and ask them for the address and number of the consulate of whatever country you're interested in. There is usually at least one consul per country. Places where there are hardly any Dominicans at all will normally have an honorary consul. This person then, may be able to tell you if there are any Dominicans living there.