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Sébastien WeillSW

Average response time: A few days

Freelancer profile translated to English.
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About Sébastien

IT Project Manager or Senior AMOA capable of steering your strategic projects with methodology, business vision, and pragmatism? I will support you through all the key stages of your ERP, CRM, POS, or OMS projects.


- Over 20 years of experience in IT system transformation, including 12 years as Assistant CIO in a retail group.
- Retail & omnichannel expertise, but also interventions in various sectors.
- Agile & Waterfall methodologies according to your contexts.
- Support for scoping, writing specifications, solution selection, partner management, committee facilitation, acceptance testing, change management.
- Mastery of Newstore, Shopify, Cegid Y2 & XRP Flex ecosystems.
- Tools: Jira, Confluence, Monday, Notion, Miro…

My added value: a strategic and operational perspective, the ability to bridge your business challenges and your IT solutions, a strong commitment to the quality of deliverables and user adoption.

I take charge of:

- AMOA scoping for a project or an IT roadmap
- Writing specifications or a call for tenders
- Project management for ERP or POS (redesign, migration, deployment)
- Change management and training support
- Structuring your IT governance

Let's discuss your needs to build sustainable, effective, and controlled solutions together.
  • French

    Native or bilingual

  • Spanish

    Fluent

  • English

    Fluent

  • German

    Basic

Can work on-site
Paris (up to 50km), Lyon (up to 20km), Lille (up to 20km)

Experience

  • Oneteam solutions
    Business Unit Director - Cegid XRP Flex
    DIGITAL AND IT
    June 2025 - Today (1 year and 2 months)
    Paris, France
    • Launch of a new ERP practice around Cegid XRP Flex (modular, cloud, API-first ERP). Structuring of the service offering, sales strategy, and marketing.
    • Strategic management: positioning, partnerships, team skill development.
    • Diversification of the OTS business beyond Retail.
    Business plan Sales strategy Project management Cegid Cegid Y2, Newstore, Shopify, Cegid XRP Flex
  • Jules, BZB
    POS & OMS Project Manager – One Team Solutions
    FASHION AND COSMETICS
    June 2024 - July 2025 (1 year and 1 month)
    • Project Management - Steering
    • Agile Methods
    • Functional Specifications
    • Newstore Solution
    • Change Management - 100% mobile POS solution on iPhone
    • RFID
    Project management Needs assessment Agile method intercultural Retail
  • Size Factory
    ERP Scoping Project Manager - Retail - One Team Solutions
    FASHION AND COSMETICS
    October 2024 - December 2024 (2 months)
    ◦ Facilitation of business workshops, writing of specifications
    ◦ Scoping of ERP migration to Cegid Y2, management of the call for tenders
    Project management Needs assessment Retail

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Education

  • ITIL4 Foundations Certification
    CertYou
    2025
    Information Technology Infrastructure Library - ensemble de bonnes pratiques pour la gestion des services informatiques: Structurer les processus IT (incidents, problèmes, changements, demandes de service, gestion des configurations, etc.). Améliorer la qualité, la fiabilité et la disponibilité des services IT. Aligner l’IT sur les besoins business.
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    2024
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Certifications

  • Product Builder No Code
    Cube
    2024
  • Cegid XRP Flex
    Cegid

Skill set

Categories