OpenTrain AI is seeking an intermediate-level Spanish AI Translation and Evaluation Expert to review, score, and improve Spanish and English AI-generated outputs using localization, MQM, and LQA standards. The role requires a bachelor's degree in a relevant field, at least 5 years of professional translation/localization experience, native or near-native Spanish with Spain locale knowledge, and minimum C1 English proficiency. Applicants must reside in Mexico, Spain, or the United States for this remote, part-time contractor position requiring 20+ hours per week.