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Romain LetellierRL

Romain Letellier

Automation, Data & Excel VBA | Python Scraping

€195/day
2 projects
Neuilly-sur-Marne, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Romain

Freelance developer specializing in Excel/VBA automation and Google Apps Script. I help companies simplify, secure, and accelerate their daily tasks with tailor-made solutions: macros, intelligent forms, dashboards, and automatic synchronizations between Excel files, Google Sheets, and other tools (Drive, Gmail, API, etc.).

I also design Python scripts for web scraping and data processing to extract, structure, and enrich your databases. My goal: to save you time and improve your data quality through robust, documented, and easy-to-maintain automations.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Freelance indépendant
    Python Developer – Web Scraping & Data Automation
    March 2024 - Today (2 years and 3 months)
    I help companies extract, clean, and structure their data from websites, Excel files, PDFs, or APIs. I develop custom Python scripts to automate repetitive tasks, optimize processes, and create clean, usable files (CSV, Excel, dashboards, etc.).
    VBA Python Machine Learning Predictive Analysis Predictive Modeling
  • Freelance indépendant
    Excel Expert – Automation & VBA Development
    January 2023 - Today (3 years and 5 months)
    Design of advanced Excel files to automate data management. Creation of VBA macros to structure, clean, and analyze complex tables. Development of forms, dynamic menus, automatic alerts, pivot tables, and custom interfaces. Automation of business tasks for clients in the administrative, HR, and project management sectors.
  • Freelance indépendant
    Web Scraping & Machine Learning Modeling – Football Data
    November 2024 - Today (1 year and 7 months)
    Automated collection of data from specialized websites (match statistics, players, odds, historical results) using Python scripts (Selenium, BeautifulSoup). Data set preparation and cleaning (pandas, NumPy), creation of predictive models to estimate match outcomes and probable scorers (logistic regression, random forest, XGBoost). Monitoring of model performance with custom dashboards.

Reviews

5.0

Out of 1 rating

C

Chloé

CODESYSTEM

Reviewed on 5/3/2025

I highly recommend Romain for any project related to artificial intelligence and Python programming. He understood my needs, proposed suitable solutions, and delivered a high-quality result. Available, rigorous, and attentive, he was a true partner throughout the project. Thanks again for your excellent work!

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Education

  • Master of Artificial Intelligence
    CNAM
    2025
    Formation avancée en intelligence artificielle axée sur l’apprentissage automatique (machine learning), le deep learning, le traitement du langage naturel (NLP), et la vision par ordinateur. Mise en œuvre de modèles prédictifs avec Python, scikit-learn, TensorFlow et PyTorch, en lien avec des projets concrets (prédictions sportives, reconnaissance d’auteurs, analyse de données financières et cryptomonnaies). Préparation et évaluation de datasets, réduction de dimension (PCA, SVD), évaluation des performances (AUC, précision top-k), automatisation de pipelines d'entraînement, et visualisation des résultats. Travaux pratiques incluant l’intégration de modèles IA dans des outils métiers, et la mise en production de scripts d’analyse.
  • General Computer Science Bachelor's Degree
    CNAM
    2024
    Formation polyvalente en informatique couvrant la programmation (Python, Java), les structures de données, les bases de données (SQL), les systèmes d’exploitation, l’algorithmique, et le développement web. Introduction aux domaines de l’intelligence artificielle, de la cybersécurité et de la science des données. Travaux pratiques sur l’automatisation de tâches, la manipulation de fichiers Excel avec Python, le web scraping, et la création de modèles prédictifs. Méthodologie de projet, gestion en équipe agile et documentation technique.

Skill set

Categories

  • Other