He made his One Day International (ODI) debut in February 2014, against Scotland in the final of the World Cup Qualifier, and his Twenty20 International (T20I) debut in March 2014, against the Netherlands in the World Twenty20. Shaiman was selected in the Emirati squad for the 2015 World Cup, and in the team's first match, against Zimbabwe, top scored with 67 from 50 balls. In the next match, against Ireland, he scored 106 from 83 balls, becoming the second UAE player to hit an ODI century (after Khurram Khan) and the first to do so in a World Cup.