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Christophe CresteyCC

Christophe Crestey

Senior IT Consultant - Product Owner

€700/day
Paris, FR
15+ years

Average response time: A few days

Freelancer profile translated to English.
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About Christophe

Senior IT consultant with over 20 years of experience in complex information systems in the energy sector. I support business units and IT departments on strategic scoping, project management, functional support (AMOA), and organizational transformation missions.

Specializing in critical and highly regulated environments (electricity grids, data, technical calculations), I work at the business/IT interface to secure decisions, structure needs, and ensure value creation. I have solid experience in high-stakes projects: IT tool redesign, data governance, application integration, architectural roadmaps, and project portfolio management.

I also work in Agile and scaled Agile (SAFe) transformation contexts, acting as a Business PMO, Product Manager, or methodology lead, coordinating between IT, data, and business teams.

My missions include:
– Functional and strategic scoping
– Functional support (AMOA) and IT project management
– Data governance and valorization
– Business support and decision-making assistance
– Agile / SAFe transformation
– Multi-stakeholder coordination (IT, data, innovation)

Pragmatic, results-oriented approach, with a strong ability to operate in complex environments and rally stakeholders.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • ENEDIS
    Senior IT Consultant – Functional Expert & Product Lead
    ENERGY AND UTILITIES
    January 2022 - December 2025 (3 years and 11 months)
    Paris, France
    Role of lead functional expert and product owner for the network data feeding product within the framework of migration to the B4ALL Big Data infrastructure (Hadoop/Spark) in an Agile environment. Key missions and achievements
    • - Expertise in electricity network data integration chains: business rules, completeness, topological consistency, asset quality, performance, and flow reliability.
    • - Contribution to technical data governance: definition and implementation of business rules, quality controls (DQM), repository management, traceability, and usage security.
    • - Operational and functional support to internal managers: planning, production deployment preparation, impact analysis, risk identification, and decision support.
    • - Product backlog management: gathering business needs, user story formalization, prioritization, workshop facilitation, and arbitration with business and IT stakeholders.
    • - SAFe ritual facilitation: refinement, multi-team synchronization, increment tracking, regular reporting to business and IT managers.
    • - Operational management via Jira and ServiceNow: incident analysis, diagnostics, TMA team coordination, operations, and studies to ensure service continuity.
    • - Support for the Big Data scaling transition: functional validation, anomaly qualification, process optimization, flow monitoring, and functional acceptance testing.
    • - Implementation and monitoring of data performance and quality indicators (volume, processing time, availability, flow stability). (Hadoop, Spark) Jira (Network Business, Operations, TMA, Studies),
    Agile Methodology (SAFe) Big Data Data Governance
  • ENEDIS
    Product Owner & Functional Expert
    January 2019 - January 2022 (3 years)
    Role of functional expert and Product Owner for a key product in the Calculation domain, responsible for the quality, consistency, and reliability of network data. Support for management, monitoring of business requirements, and coordination of Network IT teams in a scaled Agile context. Key missions and achievements
    • ◦ Functional referent for network integration and calculation processes: definition and validation of business rules, asset completeness, data consistency, anomaly management, and business validation.
    • ◦ Contribution to network data governance: structuring business rules, ensuring repository reliability, monitoring data quality, and securing usage.
    • ◦ Product Owner for product evolutions: gathering and formalizing business needs, writing user stories and acceptance criteria, prioritizing the backlog, and making functional arbitration decisions with stakeholders.
    • ◦ Facilitation of business workshops and cross-functional coordination with Studies, Data, and Operations teams.
    • ◦ Impact analysis, functional design, qualification, acceptance testing, and business validation.
    • ◦ Operational monitoring of requests and incidents via Jira and ServiceNow in coordination with TMA teams.
    • ◦ Contribution to the product roadmap, committee preparation, and production of reference deliverables (business rules, specifications, test plans, quality reporting).
  • ENEDIS – SI Réseaux
    IT Interface Project Manager – Functional Expert
    January 2011 - January 2018 (7 years)
    Role of functional expert and AMOA on several structuring projects related to the quality of the electrical network asset, modernization of engineering tools, and evolution of IT calculation and exchange chains. Involvement in

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Education

  • Continuing education in Data Science
    Mines Paris-PSL x DataScientest
    2025
    formation continue de Data Scientist
  • MASTER 2 Information and Communication Systems Architecture
    Univ. Toulouse
    1993
    MASTER 2 Architecture des Systèmes d'Information et de Communication

Skill set

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