Calculation and weekly closing of unionized personnel payroll. * Calculation and biweekly closing of employee payroll. * Weekly calculation, preparation, and delivery of severance payments and final settlements. * Distribution of payroll receipts. * Preparation of account reconciliations. * Ensuring compliance with SOX guidelines in daily activities. * Five years of experience in payroll departments — advanced proficiency in SAP, Art & Mis, Mainframe, eTime, Office, and BlackLine. * Communication, negotiation, conflict resolution, analytical, and customer-oriented skills. * Knowledge of the Federal Labor Law (LFT). * English proficiency: 80%. * Education: Certified Public Accountant or related degree. * Service-oriented attitude at all levels.