Job Summary: We are seeking a Billing Assistant with experience in CFDI 4.0 to handle invoice issuance, validation, cancellation, and tracking, as well as customer support. Key Highlights: 1. Experience in electronic invoicing and SAT system management 2. Opportunity to work in an organized and responsible environment 3. Team collaboration and supervision **Work Mode:** On-site **MAIN RESPONSIBILITIES** * Issuance and stamping of CFDI 4.0 * Validation of customers’ tax information * Correct use of SAT catalogs (tax regime, CFDI usage, payment method and form) * Invoice cancellation and replacement with prior authorization * Preparation of credit notes * Control and archiving of XML and PDF files * Basic customer support regarding billing matters * Follow-up on payment complements **REQUIREMENTS** * Completed high school education or technical degree * Minimum 6 months’ experience in electronic invoicing * Proficiency in billing systems or the SAT portal * Basic Excel skills * Organizational skills and sense of responsibility * Confidentiality in handling information **DESIRED COMPETENCIES** * Attention to detail * Adherence to procedures * Teamwork and supervision * Service-oriented attitude * Punctuality Employment type: Full-time, Probationary period Contract duration: 3 months Salary: $12,000.00 - $15,000.00 per month Benefits: * Salary increases Workplace: On-site employment