In 1990, Brian Helgeland and Coto sold a script, The Ticking Man, for $1 million, but the film was never made.

Coto joined the writing crew of Enterprise in 2003, when the show was in its third season; his episodes include "Similitude", "Chosen Realm" and "Azati Prime".

In the fourth season, he became executive producer of the show, alongside series creators Rick Berman and Brannon Braga.

In 2010, Coto joined the crew of Showtime drama series Dexter as a writer and executive producer for the fifth season.

Coto was born in Havana on June 10, 1961, fleeing with his mother to Orlando, Florida, United States.