Rafael Saraiva

Rafael Saraiva

Statistic Intern

Followers of Rafael Saraiva1000 followers
location of Rafael SaraivaRio de Janeiro, Rio de Janeiro, Brazil

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  • Timeline

  • About me

    Analytics | Statistic | Storytelling | Python | SQL | Data Science | Data | BI

  • Education

    • Microsoft Virtual Academy

      2018 - 2018
      Azure Machine Learning e Stream Analytics Data Science

      Mini curso pratico de como utilizar o Azure Machine Learning Studio.Confecção de modelos preditivos para sites e analise de fraude.

    • Cursos ADV

      2014 - 2014
      VBA com algoritmos Microsoft Excel

      Curso de especialização em macro(VBA)

    • Revie - Inteligência Empresarial

      2014 - 2014
      Inteligência Competitiva de Mercado e Indicadores KPI Inteligência de mercado
    • Stanford University

      2018 - 2018
      Machine Learning Data Science

      O curso aborda a implementação e desenvolvimento dos modelos de Machine Learning em Octave sendo eles do tipo categórico ou de regressão. As principais técnicas ensinadas são: Regressão Logística, Regressão Linear, SVM e Neural Networks. Além das técnicas é ensinado a verificar a eficiência do modelo e o que fazer em caso de baixa performance.

    • Ibramerc - Instituto Brasileiro de Inteligência de Mercado

      2015 - 2015
      Inteligência de Mercado Market Inteligence

      Activities and Societies: -Cases. -Problemas. Especialização em inteligência de mercado com foco em análises de mercado e também implementação da área em empresas.

    • Universidade do Estado do Rio de Janeiro

      2010 - 2016
      Bacharelado em Estatística Estatística

      Activities and Societies: Diretoria do Centro Acadêmico de Matemática e Estatistica

    • Fundação Getulio Vargas

      2024 - 2025
      Pós-graduação Lato Sensu - MBA Executivo Gestão com Ênfase em Liderança e Inovação
  • Experience

    • Rgarber Consultoria e Pesquisa

      Jan 2011 - Jul 2011
      Statistic Intern

      Conducted statistical analysis, including hypothesis testing and correlation analysis.Performed georeferencing analysis.Debugged databases.Designed questionnaires.Monitored Focus Group sessions and CATI surveys.

    • Ipsos Brasil

      Oct 2011 - May 2014

      Participated in Market Research projects focusing on international clients.Utilized key multivariate statistical techniques such as factor analysis and multiple correlation.Programmed conjoint analysis.Conducted market segmentation with brand perception analysis.Supported the development of a new brand emotional analysis tool.Simulated market scenarios, including positioning gain, brand image, market share, and volume.Automated Excel and PowerPoint reports using VBA.Utilized R programming language. Show less

      • Product Analyst

        Oct 2013 - May 2014
      • Estagiário

        Oct 2011 - Sept 2013
    • MetrôRio

      May 2014 - May 2018
      Market Intelligence Analyst

      Designed and developed Origin-Destination analysis tools in partnership with the IT team, enhancing operational planning and reducing costs.Analyzed external events and their impact on demand, providing strategic insights to optimize operations and resource allocation.Contributed to operational planning and intelligence for major events, including the 2014 FIFA World Cup, 2016 Olympic Games, and New Year's Eve celebrations, ensuring efficiency and predictability.Created strategic management reports, presenting actionable insights and recommendations to executives.Developed statistical processes for internal audits, ensuring data accuracy and integrity.Served as a statistical consultant for government agencies, ensuring regulatory compliance and providing specialized technical support. Show less

    • Sistema FIRJAN

      Jun 2018 - Mar 2019
      Marketing Data Analyst

      Analyzed default profiles, performance, and purchasing behavior, generating strategic insights to optimize marketing campaigns.Presented marketing results to directors and managers, supporting data-driven decision-making.Developed student churn prediction models using time series in R (Holt-Winters and ARIMA), enhancing retention strategies.Formulated strategic goals for Escola Sesi and Summer Camp, aligning institutional objectives with measurable performance indicators.Created geomarketing, web scraping, and geocoding solutions using R, improving segmentation and targeting of marketing campaigns. Show less

    • Casa & Video

      Jul 2019 - Jan 2021

      Applied machine learning models for sales forecasting using Azure Machine Learning Studio, optimizing the accuracy of projections.Communicated strategic insights to Executive and Senior Leadership, demonstrating the impact of data on business decision-making.Developed analytical applications with Shiny in R, including simulators for task allocation, integrating automations with VBA.Structured sales target-setting processes for stores, utilizing R, enhancing forecast accuracy and decision-making.Designed and executed complex SQL queries on SQL Server to extract and analyze critical data, driving strategic business initiatives. Show less

      • Analytics Consultant

        Sept 2020 - Jan 2021
      • Data Analytics Analyst

        Jul 2019 - Sept 2020
    • DBC Company

      Jan 2021 - Sept 2021
      Data Analyst

      Worked within Renner's DataLab team, focusing on data product development and collaborating with stakeholders from various departments to drive cross-functional initiatives.

    • Lojas Renner S.A

      Sept 2021 - now
      Data Insights Specialist

      TechLead the Analytics team for CRM and Marketing (2023-2024) and the Store Operations Analytics team (2021-2023), structuring processes, standardizing methodologies, and enhancing analysis quality.Facilitated agile ceremonies for the store operations analytics team, ensuring alignment and operational efficiency.Acted as a data specialist for CRM and Marketing, translating business challenges into strategic and actionable insights.Led the implementation of the RFV model and Customer Lifecycle strategy for Renner, Camicado, and Youcom, improving segmentation and personalization.Contributed to the definition and calculation of AI-driven initiatives, including spending curve modeling, roadmap planning, and technical requirements.Collaborated with the Data Science team in developing new data products, from business case formulation to implementation.Actively participated in the recruitment and selection of analysts, internship supervision, and the development of Individual Development Plans (IDPs) for the team. Show less

  • Licenses & Certifications

    • Market Intelligence Professional - CMIP

      Ibramerc - Instituto Brasileiro de Inteligência de Mercado
      Mar 2015
    • Using Python to Access Web Data

      Coursera
      Jan 2019
      View certificate certificate
    • Python Data Structures

      Coursera
      Dec 2018
      View certificate certificate
    • Google Data Analytics Certificate

      Coursera
      Jun 2022
      View certificate certificate
    • Programming for Everybody (Getting Started with Python)

      Coursera
      Dec 2018
      View certificate certificate