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Jerome CharlonJC

Jerome Charlon

High-performance Power BI dashboards | 9 years

€667/day
6 projects
Grenoble, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jerome

🚀 High-performance Power BI dashboards adopted by your teams | DAX & performance expert

Are your data scattered across Excel, ERP, CRM?
Do your teams operate without a consolidated view?
Or are your existing Power BI reports slow and underutilized?

I design high-performance Power BI solutions that are sustainably adopted by your users.

🎯 My Approach


Business analysis → identification of your critical KPIs and user needs
Data architecture → optimized modeling, advanced DAX, multi-source consolidation
Effective design → clear visuals, intuitive navigation, visual storytelling
Guaranteed adoption → training, documentation, on-site support

Result: informed decisions, measurable time savings, truly used tools.

💼 Expertise


9 years of Power BI experience – from data collection to user adoption

Areas of intervention:
- Financial reporting (revenue, profitability, cash flow)
- Commercial management (pipeline, team performance)
- Operational dashboards (production, HR, logistics)

Technical stack:
Power BI (DAX expert, Power Query, Service) • SQL • Advanced Excel • Azure • API

Microsoft Certifications:
✅ Power BI Data Analyst Associate • Agile Methodologies

🌟 What sets me apart


Performance & optimization: creation from scratch or redesign of slow reports
Pedagogy: training in best practices, empowering your teams
Business vision: solutions designed for your users, not just technical ones

🛠️ Results Achieved


✔️ Sales dashboard with 5 consolidated sources: Excel + CRM + ERP, <2s load time
✔️ HR reporting from scratch: 100% adoption in 3 months, -40% reporting time
✔️ Real-time financial analysis: ERP connection, advanced KPIs (EBITDA, WCR)

📩 A Power BI project?

Creation from scratch • Excel migration → Power BI • Redesign • Training • Optimization

Let's chat for 15 minutes about your needs.
  • French

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Grenoble (up to 50km), Lyon (up to 50km), Chambéry (up to 50km), Valence (up to 50km), Annecy (up to 50km)

Experience

  • Michelin - Marketing & Communication
    Finalization and UI Power BI spider charts
    AUTOMOBILE
    October 2025 - October 2025
    Clermont-Ferrand, France
    📊 Improving the readability and usability of Power BI reports: Analysis of an existing report to enhance understanding of key indicators and facilitate adoption by business users.
    🕸️ Optimization of a Deneb Spider Chart for better performance visualization: Redesign of the radar chart to make deviations, strengths, and areas for improvement immediately identifiable.
    🎨 User-centric design redesign: Proposal of a new design aligned with data visualization standards, improving clarity, information hierarchy, and visual impact.
    🚀 Enhancing deliverables for end clients: Professionalization of Power BI reports for Michelin clients, enabling faster, more reliable, and better-shared decision-making.
    Microsoft Power BI Data Visualization
  • Axios
    Power BI Expert
    MEDICAL
    August 2025 - September 2025 (1 month)
    At Axios, I proposed an audit of their Power BI reports and identified areas for improvement to integrate a new temporal dimension.
    📋 Audit of existing Power BI reports: In-depth analysis of data model structure and current performance to identify bottlenecks and optimization opportunities.
    🏗️ Recommendation of Azure Data Warehouse architecture: Proposal to implement a DWH on Azure to centralize data and improve BI solution scalability.
    ⚡ Consolidation of time-consuming DAX measures: Grouping and optimization of resource-intensive measures to reduce refresh times and improve report performance.
    🕐 Integration of a new temporal dimension: Design of a structure to enrich analysis with new temporal axes adapted to business needs.
    Microsoft Power BI Financial Reporting Business Intelligence
  • Arc En Ciel Recyclage
    Creation of financial, accounting, and waste tracking dashboards
    ENVIRONMENTAL
    November 2024 - Today (1 year and 9 months)
    Grenoble, France
    📊 Creation of financial and waste tracking dashboards for Arc en Ciel Recyclage.
    🔗 Connectivity with SAGE 100: Development of an accounting dashboard integrated with SAGE 100 to ensure optimal financial visibility.
    🏗️ Implementation of a data warehouse: Construction of a high-performance data warehouse to preserve production and optimize information flows.
    💡 Skill development on the KERLOG EcoRec ERP architecture: Acquiring new skills to best leverage the ERP and produce custom reports.
    📈 Optimization of reporting processes: Design of dynamic reports tailored to the company's specific needs, enabling informed decision-making.
    Financial Reporting Dashboard Financial Reporting

Reviews

5.0

Out of 4 ratings

GrégoireG

Grégoire

Mistral Tech

Reviewed on 8/24/2023

It was a great experience working with Jerome. Communication was very smooth, the quality of the dashboards is excellent, and all within tight deadlines! I also greatly appreciated Jerome's autonomy in handling my requests, allowing me to free up valuable time for other matters. I highly recommend him!
E

Eric

Qweekle

Reviewed on 6/19/2023

Attentive, fast, and efficient, with business & tech skills and a proactive approach. We will work with Jerome again as soon as possible.

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Education

  • IRC, Infomatique et reseaux de Communication (Computer Science, Network and communication)
    Ecole Supérieure de Chimie Physique Electronique de Lyon
    2007
    IRC, Infomatique et reseaux de Communication (Computer Science, Network and communication)
  • DUT, Génte Télécom et Reseaux
    Université Joseph Fourier (Grenoble I)
    2004
    DUT, Génte Télécom et Reseaux

Certifications

Skill set

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