Implementation of the EMI Execution Service (ES) specification will ensure inter-operability in Grid infrastructures. including the NGI-UA. since a single set of specifica-tions and a common job management interface will be used. This paper presents the results of the study of applying of the EMI-ES specification to provide interoperability in the Ukrainian national grid. https://www.bowlersparadisers.shop/product-category/options_hidden_product/