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Malt Strategy
Guillaume GavilletGG

Guillaume Gavillet

Data Analyst | Reporting & Automation

€450/day
2 projects
Berlin, DE
3-7 years
Python
Microsoft Excel
Data analysis
SQL
Reporting

Average response time: 12 hours

About Guillaume

Ich bin freiberuflicher Data Analyst mit Fokus auf Reporting, KPI-Tracking und Automatisierung für Business- und Operations-Teams.

Ich unterstütze Unternehmen dabei, manuelle Excel- und Reporting-Prozesse zu vereinfachen und in zuverlässige, automatisierte Analysen zu überführen – mit Excel, Python und SQL.

Typische Einsatzbereiche
  • Automatisiertes Reporting (Excel, CSV, PDF)
  • KPI-Tracking & Monitoring für Operations, Sales oder Finance
  • Datenaufbereitung & Data Cleaning
  • Reporting-Automatisierung mit Python
  • Dashboards & interne Tools (z. B. Streamlit)
  • Prozessautomatisierung für wiederkehrende Aufgaben
Technischer Stack
  • Excel (fortgeschrittene Modelle, Reporting)
  • Python (Skripting, Automatisierung)
  • SQL
  • APIs & Data Scraping
  • Data Visualization & KPI-Dashboards
Projekterfahrung (Auswahl)
  • E-Commerce (DE): Automatisiertes Vendor- & Preis-Monitoring → bessere Margen & Entscheidungsgrundlagen | Stack: Python, Excel, Data Scraping, Reporting Automation
  • B2B Sales (Drohnenbranche): Datenaggregation & KPI-Reporting → strukturierter Sales-Funnel | Stack: CRM (Monday)
  • Öffentlicher Sektor (CH): Automatisierte Dateiverarbeitung → deutliche Reduktion manueller Arbeit | Stack: Python, Excel
Sprachen
  • Deutsch: B1–B2 (berufliche Kommunikation möglich, schriftlich stärker als mündlich)
  • Englisch: fließend (bevorzugte Projektsprache)
Digital and IT Services
E-commerce
Consulting and Audits
Digital Business Models

  • French

    Native or bilingual

  • English

    Fluent

  • German

    Fluent

Can work on-site
Berlin (up to 50km)

Experience

  • Ring-Apotheken
    Data Analyst
    E-COMMERCE
    July 2025 - Today (1 year)
    Germany
    • Automated data scraping and extraction from multiple online sources.
    • AI-based processing and structuring of unstructured PDF documents into usable datasets.
    • Development of an interactive dashboard to visualize, explore, and export the processed data for business use.
    Python Web Scraping API Data visualisation Artificial Intelligence (AI)
  • Le Wagon Germany
    Teaching Assistant Data Science and AI bootcamp
    TECH
    November 2024 - Today (1 year and 8 months)
    Berlin, Germany
    • Coaching and supporting students in Data Science
    • Technical mentoring (Python, SQL)
    • Simplification of complex concepts and pedagogical support
    Python Data science Data Acquisition SQL Data visualisation
  • UASolutions Sàrl
    Data Analyst
    AVIATION AND AEROSPACE
    January 2025 - Today (1 year and 6 months)
    Lausanne, Switzerland
    • Implementation of a KPI system to improve sales performance.
    • Scraping and enrichment (via LLMs) of 1,200 exhibitors in the drone industry to identify high-potential prospects.
    • Client support from needs identification through the start of the technical collaboration.
    Web Scraping Python Data Acquisition API Data visualisation
Check out Guillaume's experience

Reviews

5,0

Out of 2 ratings

J

Julia

Highly Professional and Reliable Freelance Partnership - Ring-Apotheken

Reviewed on 07/01/2026

I really enjoyed working with Guillaume on a data project combining scraping, AI-based PDF extraction, and a hosted dashboard. He was proactive, reliable, and delivered solid technical work while also helping us think through how to best visualize and use the data. The dashboard is easy to access and use, which made a big difference for us. Overall, the project saved us time and gave us clear insights. I’d be happy to work with him again and can highly recommend him.

Guillaume has chosen to hide 1 review

1 written review is private.

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Education

  • Data Science & AI
    Le Wagon
    Data Science & AI
  • Master of Science in Mechanical Engineering
    Ecole Polytechnique Fédérale de Lausanne (EPFL)
    2020
    Master in Mechanical engineering
Check out Guillaume's education

Certifications

  • The Certificate of Python Programming
    Constructor Academy
    2021
    Python
  • Data science & AI
    Le Wagon Berlin
    2024

Skill set

Data Cleaning and Preprocessing
Web scraping
Data visualisation
Data science
Data Cleaning
Data Acquisition
Nettoyage de données
Traitement de données
Visualisation de données
Gestion de projet
Problem Solving
Résolution de problèmes
Statistical Data Analysis
automatisation excel
excel automation
Machine learning
Web Scraping
Automatisation
API

Categories