Mercor is seeking experienced HR professionals who are native or fluent in Spanish to train and evaluate AI agents on realistic HR tasks. You will build workspaces and files, write prompts, and create grading rubrics reflecting Spain's HR practices. This remote, part-time role offers about 21 hours per week, with a pilot running from Oct 23 to Nov 19. Strong knowledge of Estatuto de los Trabajadores and payroll is required.