Alexandre Selier

Data Warehouse Engineer and Data Analyst at Nextory
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Contact Information
Location
Paris, Île-de-France, France, FR
Languages
  • English Full professional proficiency
  • Russian Professional working proficiency
  • Allemand Limited working proficiency

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Benjamin Fossorier

J'ai eu la chance d'avoir Alexandre comme maître de stage lors de mon passage chez Youboox. Il m’a vite appris le language SQL et ses subtilités et il a cherché à me transmettre les qualités essentielles d'un Data Analyst. Ces qualités se traduisent chez lui par une rigueur sans faille ainsi qu'un réel sens de l’écoute et de la pédagogie. Ainsi, ce fut un véritable plaisir d'apprendre à ses côtés.

Guillaume Thirion

Alexandre a su se démarquer par son autonomie, son aisance à monter en compétence sur des sujets complexes et la qualité de son travail. Rigoureux et méthodique, il a migré entièrement notre BI vers la solution "Tableau" après avoir fait une analyse comparative du marché. En seulement quelques mois, il a été en mesure d'apprendre des langages de requête de base de données, comprendre les problématiques métiers de Youboox, prendre en main un logiciel de BI et y transposer les métriques nécessaires au pilotage de l'activité. C'est avec grand plaisir que je travaillerais à nouveau avec Alexandre.

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Credentials

  • IELTS, 7,5/9
    British Council
    Nov, 2014
    - Sep, 2024

Experience

    • Sweden
    • Consumer Services
    • 1 - 100 Employee
    • Data Warehouse Engineer and Data Analyst
      • Aug 2019 - Present

      I am the creator and owner of the data warehouse, which provides valuable, trustable insights to the business teams and our B2B partners. I developed and released two book recommendation features. I perform advanced data analyses including user segmentation, revenue model evaluations and churn rate forecasts. I am the creator and owner of the data warehouse, which provides valuable, trustable insights to the business teams and our B2B partners. I developed and released two book recommendation features. I perform advanced data analyses including user segmentation, revenue model evaluations and churn rate forecasts.

    • France
    • Online Audio and Video Media
    • 400 - 500 Employee
    • Data Analyst Trainee
      • Jan 2019 - Jul 2019

      I developped a Machine Learning model to predict user conversion to watching more premium contents. I used Python's libraries Scikit-learn and Pandas, and built a Random Forest model. I built a visualisation tool with Bokeh. It makes possible finding correlations between multiple numeric and/or nominal variables. I continued gaining experience with SQL and Tableau by creating dashboards and responding to ponctual questions from the business teams. I developped a Machine Learning model to predict user conversion to watching more premium contents. I used Python's libraries Scikit-learn and Pandas, and built a Random Forest model. I built a visualisation tool with Bokeh. It makes possible finding correlations between multiple numeric and/or nominal variables. I continued gaining experience with SQL and Tableau by creating dashboards and responding to ponctual questions from the business teams.

    • France
    • Book and Periodical Publishing
    • 1 - 100 Employee
    • Data Analyst Trainee
      • Jan 2018 - Jul 2018

      Finding insights and creating dashboards to monitor Youboox's activity. Clustering our users by use type using a decision tree. Computing our retention and churn rates, and our users' LTV, using complex table calculations. I acquired an advanced level in Tableau and an intermediate level in SQL. Finding insights and creating dashboards to monitor Youboox's activity. Clustering our users by use type using a decision tree. Computing our retention and churn rates, and our users' LTV, using complex table calculations. I acquired an advanced level in Tableau and an intermediate level in SQL.

    • France
    • Technology, Information and Internet
    • 1 - 100 Employee
    • Assistant Chef de projet Smart City
      • Jun 2017 - Dec 2017
    • United States
    • Book and Periodical Publishing
    • 1 - 100 Employee
    • Community Manager
      • Jun 2016 - Jul 2016

      Creation of content and community management in a website edition society Creation of content and community management in a website edition society

    • Animator
      • Jun 2015 - Jul 2015

      Welcoming clients, responsible of the children's security, animation Welcoming clients, responsible of the children's security, animation

    • Internship
      • Jun 2014 - Jun 2014

      Welcoming customers at an independent record shop and label. Translation of content for the website, running the store autonomously for several days during the boss's absence, preparation of commands, organization of the shop, inventory. Welcoming customers at an independent record shop and label. Translation of content for the website, running the store autonomously for several days during the boss's absence, preparation of commands, organization of the shop, inventory.

Education

  • Sciences Po
    Master in Digital, New Technology and Public Policy, Cum Laude
    2016 - 2019
  • Sciences Po
    Master, Digital, New Technology and Public Policy
    2016 - 2019
  • 42
    Piscine, Admitted
    2018 - 2018
  • Moscow State Institute of International Relations (MGIMO)
    International relations, Russian language
    2015 - 2016
  • Sciences Po
    Bachelor in Social Sciences, Specialisation in Economics
    2013 - 2016
  • Lycée Émilie de Rodat, Toulouse
    Baccalauréat, Scientifique spécialisation informatique
    2010 - 2013

Community

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