Job Summary: We are looking for a professional with experience in the billing area, familiarity with the SAT Portal, and customer service skills for a permanent position. Key Points: 1. Experience in billing and customer service 2. Familiarity with the SAT Portal 3. Possibility of an indefinite-term contract Requirements: * 1 year of experience in the billing area * Bachelor's degree in Economics or Administration * Familiarity with the SAT Portal * Customer service skills Schedules: 1) Monday to Friday, from 8:00 a.m. to 6:15 p.m. (Rest on Saturday and Sunday) 2) Sunday to Thursday, from 8:00 a.m. to 6:15 p.m. (Rest on Friday and Saturday) The schedule is fixed; the shift is assigned according to operational needs. Job Type: Full-time Salary: $12,400.00 - $12,800.00 per month Benefits: * Savings fund * Option for an indefinite-term contract * Life insurance * Grocery vouchers Education: * Completed high school (Desirable) Work Location: On-site employment