Calculation and weekly closing of unionized personnel payroll. * Calculation and biweekly closing of employee payroll. * Weekly calculation, preparation, and delivery of severance payments and settlements. * Distribution of payroll receipts. * Preparation of account reconciliations. * Ensuring compliance with SOX guidelines in daily activities. Requirements: - 5 years of experience in payroll areas. - 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