On 27 May 1752 he joined the Regimiento de Dragones de Edimburgo at Villa de Arcos, commanding a company, but he moved to the navy in 1754.
He rose 'alférez de fragata' (ensign) and commanded the 5th Company of the 2nd Battalion of Marines at Ferrol.

On 1 November 1765 he started working at the shipyard at Guarnizo, under the designer Francisco Gautier.
In October 1770, on the creation of the Cuerpo de Ingenieros de Marina, he was one of its few officials from the Cuerpo de Oficiales de Guerra to join the new body.
He was 'capitán de fragata', Commandant of the Engineers and Engineer General, rising to Engineer General of the Fleet on 28 January 1786.
On 27 May 1752 he joined the Regimiento de Dragones de Edimburgo at Villa de Arcos, commanding a company, but he moved to the navy in 1754. He rose 'alférez de fragata' (ensign) and commanded the 5th Company of the 2nd Battalion of Marines at Ferrol.
On 1 November 1765 he started working at the shipyard at Guarnizo, under the designer Francisco Gautier. In October 1770, on the creation of the Cuerpo de Ingenieros de Marina, he was one of its few officials from the Cuerpo de Oficiales de Guerra to join the new body. He was 'capitán de fragata', Commandant of the Engineers and Engineer General, rising to Engineer General of the Fleet on 28 January 1786.
José Romero y Fernández de Landa