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Julien FernandezJF

Julien Fernandez

Transition & CAIO DSI | AI, Data & Cleantech

€1,000/day
Marseille, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

17 years of experience, including 7+ in IT/Data leadership roles on the executive board. I help large companies and industrial startups move from AI intention to production use cases — with a leadership vision and the ability to prototype myself.

My background: PV engineer (Solairedirect), data leader (Chief Data Officer Tenergie), then CIO of an e-fuels startup (Elyse Energy). At each stage, I anticipated the next technological wave — today it's AI.

What I do concretely:
• AI Strategy & Use Cases: maturity assessment, roadmap, tool selection (LLMs, RAG, agents)
• AI Prototyping: delivered POCs, not buzzwords (165+ automations, 12+ production MCP servers)
• Transition IT Leadership: IT structuring, ERP, BI, change management
• Energy / Cleantech: rare profile combining operational AI + Renewable Energy sector + C-level experience

Bilingual FR/EN, remote or hybrid missions from the PACA region.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Marseille (up to 50km), Paris (up to 10km)

Experience

  • Elyse Energy
    Chief Information Officer (CIO)
    January 2024 - November 2025 (1 year and 10 months)
    Marseille, France
    Context: Industrial startup in low-carbon synthetic fuels (e-fuels, SAF, green methanol) to decarbonize hard-to-electrify transport — Series B funding, no structured IT function.

    Mission:
    • IT Strategy: definition and management of the IT roadmap aligned with hypergrowth
    • Creation of the IT department from scratch: recruitment, processes, governance
    • Deployment of an ERP suited to industrial needs (selection, configuration, deployment)
    • Digital transformation: digitalization of business processes, collaborative tools, cloud infrastructure

    Results: IT department created from scratch and operational · ERP deployed on time & within budget · budget managed €500K–€1M/year
    CIO ERP Digital Transformation Change Management
  • Tenergie
    Chief Data Officer & Retrofit Manager
    December 2021 - December 2023 (2 years)
    Context: 2nd independent producer of photovoltaic energy in France — 900+ sites in operation, €220M revenue.

    Data Focus:
    • Software Engineering: automatic performance analysis solutions for PV installations
    • Proprietary algorithms for anomaly detection and production optimization
    • Dashboards and automated reporting for O&M teams
    • Management of 2 data analysts

    Retrofit Focus:
    • Technical studies for modernization of existing solar farms (repowering, revamping)
    • Management of 3 retrofit engineers

    Results: 900+ sites monitored by automated analysis · industrialized anomaly detection across the fleet
    Data Business Intelligence Renewable Energy
  • Solidarlink
    PV Monitoring Consultant & Founder
    January 2020 - December 2021 (1 year and 11 months)
    Context: Founding Solidarlink — monitoring solutions and software platforms for off-grid photovoltaic installations, serving rural electrification in developing countries.

    Mission:
    • Design and development of a monitoring platform for 15 PV installations carried out by GIZ (German international cooperation) in Senegal — first-of-its-kind platform
    • Asset management, real-time performance analysis, alerts, and predictive maintenance
    • Tools adapted to field constraints: low connectivity, harsh environments

    Results: 15 PV installations monitored in real-time · innovative platform operational in Senegal
    Photovoltaics Data Cleantech

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Education

  • Research in photovoltaics
    University of Ottawa
    2007
    Stage d'ingénieur chercheur en photovoltaïque : recherche appliquée sur la caractérisation et l'optimisation de cellules solaires.
  • Supélec Engineering Degree
    École Supérieure d'Électricité (Supélec)
    2008
    Grande école d'ingénieurs. Spécialité : télécommunications et traitement du signal optique (photonique). Cursus : télécommunications, réseaux électriques, automatisme, systèmes d'information.

Skill set

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