Oscar Fahl Ribeiro

Analytics Consultant @Mastercard Data & Services

Brazil✔️ ITProduct ManagerProject ManagerDatabase DeveloperML EngineerData ScientistData EngineerData AnalystBI Analyst

Mechanical Engineer from USP-EESC, currently working as an Analytics Consultant. I am passionate about envisioning the future and making it a reality. Enthusiastic about analyzing new and complex problems and seeking relevant solutions. I have a profile that integrates business vision to identify key pain points and opportunities with technical skills to develop solutions ranging from simple ones using SQL and Excel to complex Big Data processing, data visualization, and advanced Machine Learning techniques. I started my career at DASA as a Trainee, gaining a comprehensive view of the company, from operations to strategy. In Supply Chain, I supervised 2 areas and was responsible for process improvement and automation projects and KPIs. After this period, I moved to the Business Directorate where I structured the Market Intelligence area, fostering an analytical culture in management. For over 2 years, I have been working at Mastercard Data & Services as an Analytics Consultant, involved in various Data Science and Business Intelligence projects across topics, clients (usually banks and acquirers), and different data contexts. I currently lead project management with a junior team, and am responsible for creating analyses and presentations for executive audiences, strategic alignment with stakeholders, schedule planning and task prioritization, and overseeing deliverables. In the past year, I completed my MBA in Data Science, Big Data, and Artificial Intelligence, which opened my eyes to new opportunities in the data field. I have advanced knowledge in Python, PySpark, SQL, Tableau, PowerBI, and am currently studying to deepen my understanding of statistics applicable to AI model development.

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Work Background

Mastercard Data & ServicesAnalytics Consultant

Jun. 2022São Paulo, Brasil> I contributed to strategic projects for issuing banks with Mastercard-branded cards, delivering insightful analyses to support decision-making and developing production-ready data products to enhance operational efficiency and drive strategic initiatives > Leadership in complex projects, involving problem understanding, strategic alignment with stakeholders, deadline and priority management, task delegation, and results delivery, ensuring efficient execution of high-impact projects. > Development and presentation of advanced analyses for executives, aimed at supporting strategic decision-making and enhancing operational efficiency. > Development of data models for segmentation (K-means, DBSCAN), prediction (XGBoost, Random Forest), and factor analysis, with statistical rigor and ready for production implementation, tailored to the client's data context. > Development of dashboards for the credit card market, focusing on usage engagement, authorization and fraud, loyalty, and chargeback, to provide strategic insights that support business decision-making and optimize operations and products. Adaptability to work with data visualization tools based on client preference, delivering dashboards in Tableau, PowerBI, Quicksight, and Looker. > Creation of robust ETLs for the implementation of dashboards and Machine Learning models in environments such as Databricks, GCP, AWS, and Azure, using Python, SQL, and PySpark for process orchestration and execution.

DasaCoordinator - Market Intelligence

Nov. 2021 - May. 2022> Management of data products in partnership with Market Intelligence and Analytics to support decision-making for regional executives and other business units. > Strategic studies for identifying opportunities in new business ventures within the healthcare sector. > Structuring responsibilities, rituals, and processes for the area based on agile methodology.

DasaSpecialist - Market Intelligence

Mar. 2021 - Nov. 2021São Paulo, Brasil> Development and maintenance of Tableau dashboards to support decision-making for business managers and directors > Analysis of the holding brands by connecting sociodemographic, market, and business data to identify opportunities for expansion and site changes. > Mapping of key competitors and monitoring of results and market movements.

DasaSupervisor SAP - Invoice

Dec. 2019 - Feb. 2021Barueri, São Paulo, Brasil>> Central GRC: Area responsible for processing merchandise invoices in the PI-SAP module, handling approximately 8,000 invoices per month (R$600MM/year). Managed a team of 7 people. > Created a new area. The activity was previously dispersed among all buyers with undefined processes. Structured KPIs, tools, and processes for the operation. The capacity for processing invoices per hour increased by 30% compared to the previous year. > Implemented automation improvements through contract database cleanup and standardization of purchase orders/invoice issuance. > Provided support and training for nearly 1,000 employees involved in the process. >> Material Master Data: Area responsible for creating, configuring, and cleaning up materials in the MM-SAP module. Managed a team of 5 people.

DasaTrainee - Supply Chain

Jan. 2019 - Dec. 2019São Paulo, Brasil>> Effectus Project (Warehouse): Process improvement for managing inventory of supplies across 800 service units to increase the accuracy of balance and consumption information in the MM-SAP module. > UX Research: User profile and perception of the process. > Process Definition: Receiving, storage, inventory, internal distribution, and consumption tracking (automatic and manual). > Digital Solution Prototype: Field testing of an app to simplify user interaction with the process. >> SGT Project (Transport): Development of a system for managing the operation of biological sample transport with over 650 vehicles and 860 routes per week. > Data Governance: Cleanup and structuring of an Excel database to link financial and operational data, enabling the creation of new management indicators. > Scrum: Implementation of routines for prioritization, detailing, and approval of improvements to the new routing system (LogCare). >> General Inventory of Units: Execution of inventory for 70% of the stock across 800 service units via MM-SAP. > The process had been inactive for 2 years. Developed, communicated, and implemented within 2 months.

DasaIntern - Transportations

Jan. 2018 - Dec. 2018Barueri, São Paulo, Brasil>> I structured 3 management dashboards in Tableau: > Corporate Travel: Management of OPEX and monitoring of trips booked outside the internal policy. > Corporate Taxi and Uber: Management of OPEX and monitoring of rides with costs exceeding the internal policy. > Route SLA: Monitoring of the completion times for biological sample collection routes based on app logs. The first service level indicator for the area.

Gnome (Garden Gnome LTD)Aprendiz voluntário

Feb. 2017 - Jul. 2017Valparaíso, Chile• Durante meu intercâmbio no Chile participei voluntariamente da Start-up Gnome focada no desenvolvimento de sensores IOT para a agricultura. > Realizei uma pesquisa sobre os diferentes tipos de sensores de umidade do solo, seus mecanismos de funcionamento e suas características (impedância, capacitância). > Desenvolvi protótipos de baixo custo de sensor de umidade usando moldes de PVC, gesso e sucatas de metal para testar configurações diferentes e compará-las com os sensores comerciais.

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