Don't know of any software that uses the eurovision voting system but I can tell you it's called positional (ranked) voting with their own point distribution system.

Technically any polling or voting tool that allows for multiple answers can be used for ranked voting.

This would be used by a group of 30 people and the voting should be open for 2 to 3 days. 
Any participant should be able to vote on around 30 contributions (with some details). 

Does anyone know something (similar) that could help me? 

Big thanks in advance!

Voting tool that can use the Eurovision voting system.