Born in Cumana, Venezuela, Jose Butto was officially signed by the Mets in early June 2017 for just $5,000, a 19-year-old who agreed to terms with a club just prior to the end of the 2016-2017 international free agent signing period and the beginning of the 2017-2018 period. He made his professional debut with the DSL Mets and posted a 1.44 ERA in 50.0 innings, allowing 48 hits, walking 9, and striking out 41. In 2018, he was assigned to the Kingsport Mets when their season began and appeared in six games for them in total, pitching 32.