Bellot joined the officials committee of the Circuit de Catalunya and the Spanish Assembly with support from the Royal Automobile Club of Spain at the age of 18. Bellot later worked in Trofeo Maserati and the Copa Hyundai Coupé championships in Spain. She became permanent chairman of the stewards of the European Formula 3 Open, the Spanish Endurance Championship and was appointed a permanent steward of the International GT Open. Bellot also worked in other Spanish national championships. In 2009, she joined the trainee stewards programme that was established by the world governing body of motorsport, the Fédération Internationale de l'Automobile (FIA), as a means of inviting young officials to be observers at Formula One race weekends. Her first race was the 2009 Spanish Grand Prix, and she started working as a steward for Formula One's two main support series, the GP2 Series and the GP3 Series, in 2010.