[1] Marrero is the first person to hold the position of Prime Minister of Cuba in 43 years.

[citation needed] Marrero is an architect[4] and worked in Gaviota, the tourism arm of the Cuban military, where he also held the rank of colonel.

He began as an investor in the Gaviota Group and later was head of the technical investment group, deputy director and general director of the Río de Luna hotel and then deputy delegate of Gaviota for the eastern provinces.

Following the 2019 Cuban constitutional referendum, the office of Prime Minister of Cuba was reinstated for the first time since Fidel Castro last occupied it in 1976.

Soon after his appointment, controversy arose due to his son's opulent lifestyle, which contrasted with the daily life of the Cuban population.