Job Summary: A leading company is seeking a Billing Assistant with experience in accounting systems and the SAT platform to join its administrative and accounting team. Key Highlights: 1. Part of a leading company in administrative and accounting services. 2. Develop your skills in invoicing, CONTPAQi, and the SAT platform. 3. Opportunity for growth and continuous learning within a dynamic team. Job Offer Billing Assistant Location: Cuajimalpa de Morelos, Mexico City Company: HALFEO COMERCIALIZADORA MX Posted on April 6, 2026 Valid until April 16, 2026 Net Monthly Salary $12,500\.00 Apply Folio: 21105303 Description A leading company focused on the Administrative, Accounting, and Human Resources sectors invites you to join its team as a BILLING ASSISTANT. If you possess skills related to CONTPAQi usage, knowledge of the SAT platform, XML download capabilities, and experience handling accounting systems such as CONTPAQi, do not hesitate to apply—we will be pleased to contact you. Requirements * Required academic level: Bachelor’s degree * Academic status: Degree holder * Required field of study (related fields): Accounting * Experience: 1 \- 2 years as a Billing Assistant * Knowledge and tools: + Petty cash management + Preparation of credit memos + Knowledge of the invoicing process + Advanced Excel proficiency (pivot tables, filters, formulas) + CSF download + Knowledge of PPD and PUE invoices + SAT platform * Language(s): + None * Skills and competencies: + Customer orientation + Autonomy + Logical\-Mathematical reasoning + Teamwork + Results orientation + Continuous learning + Critical thinking * Candidate availability: + No travel required Schedule Monday to Friday Full time 09:00 \- 18:00 Schedule clarification: Monday to Friday, 9 am to 6 pm. Functions and activities * Strong verbal communication and customer service skills * Handling XML upload and download * Preparation and issuance of credit memos * Knowledge of SAE system operation * Issuance of PPD and PUE invoices Benefits offered by the company * Social Security * Year-end bonus (Aguinaldo) * Vacation benefits * Fixed\-term contract \- Indefinite\-term contract Recruitment process * Screening and technical skills interview \- HR Representative * Interview with department head \- May be conducted in person * Start date of your recruitment process: April 6, 2026 * Recruitment process duration: 2 weeks About this job posting