Born in Pamplona, Navarre, Erviti's first UCI race success came at the 2004 Vuelta a Navarra as an amateur, winning the final stage while riding for the Serbitzu Kirolgi team.

Having missed out on a stage victory when he was caught by the sprinters after an attack with 4 kilometres (2.5 miles) remaining on stage 17,[7] Erviti won the following day after passing Nicolas Roche before the finish line in Las Rozas de Madrid, having been a part of a larger breakaway group.

[9] The following year, he won the Vuelta a La Rioja one-day race, out-sprinting EPM–UNE teammates Giovanny Báez and Juan Pablo Suárez.

[10] He was selected to ride the 2012 Tour de France, but crashed as part of a large pile-up on stage 6 with 25 kilometres (16 miles) remaining.

Erviti suffered "serious wounds in his right side", that required surgery, a 48-hour hospital stay and as a result, did not start stage 7.