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Guillaume RuffinGR

Guillaume Ruffin

Product Owner

€650/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

With 6 years of experience as a functional consultant and Product Owner, I combine methodological rigor, analytical thinking, and the ability to orchestrate multi-stakeholder projects in demanding technical environments.
  • French

    Native or bilingual

  • Spanish

    Native or bilingual

  • Italian

    Conversational

  • German

    Conversational

  • English

    Fluent

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

Experience

  • Keolis
    Product Owner Hastus
    TRANSPORTATION
    April 2026 - Today (2 months)
    Paris, France
    Standardize flow practices between Hastus and other subsidiaries' IS (SAE, ticketing, passenger information...)
    Participate in the deployment of Hastus within subsidiaries
  • Giro
    Business Analyst
    TRANSPORTATION
    July 2019 - January 2024 (4 years and 6 months)
    Paris, France
    RATP - Sicomore Project (2022 – 2024)

    ‣ Facilitate functional workshops with the business
    ‣ Write functional specifications and User Stories
    ‣ Coordinate between developers, AMOA, and clients
    ‣ Qualify anomalies and track fixes
    ‣ Implement and monitor quality indicators and regular reporting
    ‣ Change management: user training and support

    SNCF - Orion Project (2019 – 2022)

    ‣ Define new functionalities in collaboration with the business (workshop facilitation, assistance in writing needs expressions)
    ‣ Write functional specifications and User Stories
    ‣ Present User Stories to the Giro development teams & functional referent during development
    ‣ Contribute to testing phases (writing test plans, functional acceptance)
    ‣ Demonstrate evolutions to the business for validation of functional blocks
    Workshop facilitation Functional specifications Agile methodology User story Business/Technical Analysis
  • Eurotunnel
    Project Engineer
    TRANSPORTATION
    April 2018 - June 2019 (1 year and 2 months)
    Folkestone, UK
    ‣ Analyze operational processes and recommend optimizations
    ‣ Research solutions to streamline the customer journey
    ‣ Implement these solutions
    Workshop facilitation Process modeling Lean management

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Education

  • Project and Program Management
    Skema
    2017
  • Industrial Engineer
    University of Technology of Compiègne
    2016

Skill set

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