Customer Service Invoicing Specialist

The Customer Service Invoicing Specialist is responsible for managing and overseeing the end-to-end billing process, ensuring all revenue is accurately captured and recorded within SAP. This role partners closely with Sales, Customer Service, Finance, Order Management, Logistics, and other cross-functional teams to ensure efficient order fulfillment, invoicing accuracy, and seamless customer experience.

The specialist serves as a key liaison between customers and internal stakeholders, managing invoicing requirements, order-related inquiries, billing discrepancies, and accounts receivable matters. The role requires a strong understanding of business processes, local regulations, and customer contractual requirements to ensure compliance and operational excellence.

This position is responsible for ensuring all invoices meet Mexican fiscal and regulatory requirements, including SAT compliance, CFDI 4.0, and payment complement regulations, while adhering to internal corporate policies. In addition, the specialist will monitor key billing metrics, prepare reports, identify process improvement opportunities, and support projects that enhance operational efficiency and customer satisfaction.

This position requires candidates to be based in Mexico City or the surrounding metropolitan area to support effective collaboration and business operations. The role follows a hybrid work model, and regular (one day a week)  in-office attendance is an essential requirement to ensure team engagement, cross-functional partnership, and successful execution of responsibilities.

• Execute and oversee the end-to-end billing and invoicing process within SAP.

• Partner with cross-functional teams to ensure alignment on pricing, order management, and invoicing activities.

• Manage customer inquiries related to invoicing, order status, accounts receivable, and contract administration.

• Ensure compliance with SAT requirements, CFDI 4.0 standards, payment complements, and other applicable Mexican tax regulations.

• Analyze billing performance metrics and prepare regular operational reporting.

• Identify and implement process improvements to increase efficiency, accuracy, and customer satisfaction.

• Resolve complex billing and customer service issues by collaborating with internal stakeholders and customers.

• Participate in and lead operational projects, process enhancement initiatives, and continuous improvement efforts.

• Provide guidance and knowledge sharing to team members as needed.

• Bachelor’s degree in Accounting, Business Administration, Finance, or Engineering.

• 4+ years of experience in billing, invoicing, accounts receivable, customer operations, or order management.

• Solid understanding of Mexican tax regulations and invoicing requirements, including SAT compliance and CFDI 4.0.

• Fluent in English, both written and verbal.

• Proficient in MS Excel (macro design and app automation are pluses). Knowledge of SAP or other ERP systems is preferred.

• Experience working in a cross-functional, customer-focused environment.

• Ability to independently manage multiple priorities and resolve complex issues with minimal supervision.

• Knowledge of REPSE (Registro de Prestadoras de Servicios Especializados u Obras Especializadas) is preferred.

• Strong analytical, problem-solving, and decision-making skills.

• Excellent communication and stakeholder management abilities.

• High attention to detail and commitment to accuracy.

• Project management and process improvement experience.

• Ability to work independently while effectively collaborating across global teams.

• Continuous improvement mindset with a focus on operational excellence and customer experience.