Isabella Calderon

Economist with professional experience in billing operations, financial documentation, invoice validation and compliance within a multinational technology company. Skilled in Excel, Power BI (DAX) and Python, with a strong analytical approach to financial data, reporting and process improvement. Experienced in supporting billing and financial processes, ensuring data accuracy and compliance.

Interested in project finance, controlling, budget monitoring, cost analysis, financial reporting and business performance.

Billing & Finance Operations Intern - Huawei Technologies Colombia SAS

• Validated and processed invoices for a multinational telecommunications company, checking figures against contractual and billing terms to ensure financial accuracy.
• Reviewed financial and billing documentation for completeness and compliance, supporting internal control and audit-readiness standards.
• Managed invoice submission and documentation workflows, coordinating with billing, sales and accounting teams to resolve discrepancies and support timely month-end processing.

Sales Representative - RF Servicios SAS

• Managed customer accounts and follow-up activities, maintaining accurate records to support reporting and pipeline tracking.
• Built client relationships through outbound communication, addressing inquiries and identifying opportunities.

Research Assistant - Finis Research Group

• Conducted research on social and economic issues, applying analytical frameworks to assess the impact of financial literacy on early-stage financial decision-making.

Bachelor's degree - economics - Universidad Santo Tomas (2022-02 - 2026-07)

Course - Power BI – DAX for Advanced Analysis (2025-05 - 2025-07)

Course - Finance for Startups - Platzi (2025-11)

Seminar - Strategic Vision: Challenges and Opportunities (2025-06 - 2025-07)

Course - Excel for Economists / Excel for Financial Mathematics (2024)