Job Summary: We are seeking a candidate with experience in internal control, billing review, preparation of operational reports, and key performance indicator (KPI) analysis, as well as customer management and communication. Key Responsibilities: 1. Internal control and billing review 2. Preparation of operational reports and KPI analysis 3. Customer management and communication We are looking for a candidate with relevant academic background and proven experience in this position. Main responsibilities include internal control and billing review; preparation of reports containing key operational and billing data. Analysis of key performance indicators (KPIs); customer management and communication. Proficiency in computer tools is required, with preference for Python and knowledge of SAP. Working days and hours are Monday to Friday, from 8:30 a.m. to 5:00 p.m.; hybrid work mode 4x1 (four days onsite and one day remote). Job stability, OSDE 210 health insurance, and direct employment by the company are offered.