Juan Sebastian Rey Martinez

Juan Sebastian Rey Martinez

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Accounts Receivable | Economy and finance | SAS, Python, R Studio | Spanish, English, French
Colombia

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Résumé


Jobs verified_user 34% verified
  • Holcim ABS
    Accounts receivable Specialist verified_user Verified experience
    Holcim ABS
    Sep 2024 - Aug 2025 (1 year)
    • Manage collections and ensure timely payments (via GetPaid), addressing requests from Canadian customers and sales representatives to comply with service agreements. • Use of SAP FI to consult payments, download invoices and perform customer analysis. • Document negotiations and changes in credit and collections for audits and process traceability. • Generating Excel reports for internal auditing. • Collaborate with O2C (Order to Cash) teams and communicate risks to improve customer satisfaction and strategic indicators. Additionally, fostered strong client relationships, recognizing the importance of long-term partnerships to facilitate smooth workflows. Utilized Google Workspace tools, including email and calendar, to enhance co
  • TELUS Digital
    Customer Service Representative
    TELUS Digital
    Apr 2023 - May 2024 (1 year 2 months)
    - Worked in both English and French to provide exceptional customer service. - Provided information and updates on smart home security systems, ensuring customers were well-informed about their options. - Resolved questions related to billing or account information, demonstrating strong attention to detail and customer care. - Utilized basic troubleshooting and problem-solving skills to address customer issues effectively. - Engaged in marketing efforts by offering additional products within the security system during customer interactions, which not only enhanced sales but also addressed customer concerns, thereby strengthening the overall customer relationship. - Provided detailed billing information and explanations, ensuring clarit
  • IGT Solutions
    Travel Associate
    IGT Solutions
    Oct 2021 - Feb 2022 (5 months)
    As a Travel Associate, I provided telephone support for a US airline, assisting customers with flight reservations, general inquiries, and related questions. I ensured timely and effective attention to client needs, demonstrating a commitment to customer satisfaction. Additionally, I adeptly handled calls during periods of increased demand, maintaining service quality under pressure. I also used Microsoft Excel for customer tracking and internal reporting, while monitoring and ensuring compliance with US finance guidelines in processing travel bookings, cancellations, and refunds, which contributed to the overall accuracy and reliability of financial operations within the travel department. Furthermore, I optimized customer service processe
Education verified_user 0% verified
  • Universidad de Antioquia
    Economist
    Universidad de Antioquia
    Aug 2018 - Jul 2024 (6 years)
    • Macroeconomics and microeconomics theory. • Econometrics and application of some models on R Studio. • Economic history and theories of economic development. • Principles of administration, finance and accounting.
Projects (professional or personal) verified_user 0% verified
  • L
    Mortality in space and time, case of France between 2019‐2022 (French).
    Le Mans University
    Jan 2023 - Jul 2023 (7 months)
    Developed code in SAS for statistical analysis of mortality data in France between 2019 and 2022, providing insights and potential insurance premium suggestions. Prior to coding, utilized Microsoft Excel to ensure the database was clean and ready for data processing, which enhanced the accuracy and reliability of the analysis conducted.
  • H
    Health risk scoring, and proposing a pricing system for complementary health insurance.
    Dec 2022
    using the database “HEALTHSCORE5” and SAS‐IML.
  • D
    Does GDP determine the quality of life in country in any case?
    Jul 2019 - Nov 2019 (5 months)
    Analysis in the United States, Chile, Brazil, Guyana and Haiti between 2008‐2010.
  • L
    Labor market for postgraduate students in Colombia.
    Jun 2019
    Database analysis to verify the percentage of professional insertion after completing a postgraduate program.