The 28-year-old is regarded as one of the most exciting talents in Argentinean rugby and featured in the 2011 Rugby World Cup.
Senatore, who enjoyed a playing spell at Toulon after the showpiece competition in New Zealand, made his international debut against Uruguay in Montevideo in 2008.
He has since gone on to make 17 Test appearances for his country, scoring two tries, and most recently featured against Ireland at Lansdowne Road in November.
His selection for Los Pumas came as a result of his good form for Los Jaguares between 2008 and 2011 and his form in the Vodacom Cup winning Los Pampas side.
But now he will turn his attention to life in the Aviva Premiership and, having already played at Sixways as part of the touring Argentina team in 2011, he is excited by his new surroundings.
"I am very pleased about this fantastic opportunity to play in England with Warriors," said Senatore, who stands a commanding 6ft 3in tall and weighs 231lb.
"I believe my game will suit the Aviva Premiership and therefore I am excited to become a Warrior and test myself in such an environment.
"The club has spoken to me about its major plans for the future and I am aware of the quality of the stadium and facilities having played at Sixways prior to the Rugby World Cup in 2011.
"I now look forward to joining up with Warriors next season and to the latest challenge in my career."
Warriors have conducted a worldwide search for the very best talent to enhance the playing squad at Sixways and to secure the signatures of those who share both the club'sambition and ethos.
The club is now pleased to be able to announce the major signing of Senatore and is also in advanced talks with a number of other leading players as Warriors strive to assemble the strongest ever squad at Sixways.
"It is an exciting time to be connected with Warriors," said Corin Palmer, Rugby Operations Director.
"Players who are out of contract at the end of this season at Sixways can clearly see the calibre of signings we are now making. We also have players of international quality, both home and abroad, excited about Warriors and wanting to be a part of it.
"We are working very hard behind the scenes and the squad is starting to take shape for next season. We look forward to now making more positive announcements in the coming weeks."