He has three European Tour wins, the 2019 Trophée Hassan II, the 2020 Commercial Bank Qatar Masters and the 2023 Magical Kenya Open.

After attending the Spanish national training centre as a junior, Campillo elected to play college golf at Indiana University in the United States.

[2] Campillo would go on to become one of the most successful players in the university's history, winning nine intercollegiate titles and being named to the Golfweek First Team All-American squad.

He played full-time on the Challenge Tour in 2010, improving to 87th in the standings and reaching the final stage of qualifying school, but his breakthrough year was 2011.

Campillo made a good start on the European Tour, finishing tied for second place in the Avantha Masters in New Delhi, India in February 2012.