Jover's competitive career began in the late 1940s with Scuderia Milano-Maserati, the Italian outfit that provided machinery for a number of European privateers of the era. He raced for the team at the 1947 Bari Grand Prix, finishing sixth, and at the 1948 Albi Grand Prix, where he came seventh. These were non-championship events contested by many of the era's leading drivers and served as important proving grounds for aspiring grand prix competitors.
Jover's most prominent result came at the 1949 24 Hours of Le Mans, where he finished second overall sharing a car with Henri Louveau. The result placed him among the leading endurance racers of the immediate postwar period and brought him genuine international recognition.
In 1951, Jover took part in the Formula One World Championship at the Spanish Grand Prix, one of just two Spanish entries in the race alongside Paco Godia. He qualified 18th on the grid but was unable to start after his engine failed during pre-race preparations. Despite not taking the start, his entry in the world championship event secured his place in history as one of the first Spanish drivers to participate at that level of the sport.
Following his Formula One entry, Jover shifted his focus toward hillclimbing and endurance racing with Scuderia Pegaso, the Spanish manufacturer's works team. His association with the Pegaso Z-102 — a sophisticated and powerful sports car produced by the Spanish state-owned ENASA company — brought a serious accident during practice for the 1953 24 Hours of Le Mans. Jover crashed his Z-102 and suffered severe injuries to his left leg, sidelining him from competition.
He returned to hillclimbing in June 1954 and resumed a productive domestic career. In 1957, he won the Gran Premio de Barajas driving a Maserati 200S. The following year he claimed victory in the La Rabassada hillclimb — one of the most celebrated Spanish hillclimb events, held on the road from Barcelona to the Monte Tibidabo transmitter — behind the wheel of a Mercedes-Benz 300SL.
Jover died on 28 June 1960 in a road accident near Sitges, Catalonia, when his convertible left the road and fell from a cliff. He was 56 years old. His death cut short the final chapter of a career that had encompassed more than a decade of racing at both national and international levels.
Jover occupies a small but genuine place in Spanish motorsport history. His second-place finish at Le Mans in 1949, his entry into Formula One at the 1951 Spanish Grand Prix alongside Godia, and his victories in Spanish hillclimbing events through the 1950s mark him as one of the leading Spanish competitors of the formative postwar racing era.