Her predecessor left late last month for a non-communications post with the United Nations department of political affairs in New York.
In her EU role, Caprile - formerly an auxiliary agent with the European Commission's directorate-general for external relations - will have responsibility for ICG's relations with the EU and the media across Brussels and Europe.
Caprile is set to join the ICG, which handles EU crisis prevention and management, in earlyJune.
According to ICG director of media and information Katy Cronin, the role will revolve around liaison with the EU and member states.
'Caprile will be following the policy decisions within the EU in areas relating to the ICG, alongside some media relations work,' said Cronin, to whom Caprile will report on media relations issues.
It is understood the EU was originally considering splitting the ICG PR role between EU relations and media relations and is considering the possibility of taking on further communications staff during the next few months.
Caprile has for the past four years worked with the EC on its Partnership and Co-operation Agreement between Russia and the EU, plus the Ukraine and EU issues on the environment, energy and nuclear safety.
Part of her previous role also saw her working on communications surrounding the disposal of nuclear materials and the Fuel Gap Programme supporting the closure of Chernobyl Nuclear Power Plant.
Prior to the EC, which she joined in 1995, Caprile worked as a branch director at the Eastern Europe Institute.