His climbing ability was instrumental in leading Lance Armstrong to five of his Tour de France victories, most famously leading Armstrong up the start of Alpe d'Huez in 2001. It was also on this stage that "The Look" incident happened between Armstrong and Jan Ullrich just prior to Armstrong's launch of his attack. In reality, Armstrong was not looking at Ullrich, but rather at Rubiera as he was checking to be sure Rubiera would be there to save him if he cracked and his attack failed.
He earned an engineering degree in 2004, while balancing his race schedule and studies. Rubiera was elected as deputy to the cyclists' representative council of the UCI ProTour.
