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Loic ThiollierLT

Loic Thiollier

Interim Management Accounting / Finance

€600/day
Lyon, FR
15+ years

Average response time: A few days

Freelancer profile translated to English.
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About Loic

Senior reinforcement immediately operational - Accounting, Finance & Transformation

Are you facing an unexpected departure, overload, reorganization, or transformation of your financial processes? I intervene quickly to stabilize, structure, and secure.
With 18 years of experience in accounting expertise and corporate finance, I have worked as a senior accountant, accounting manager, and manager in various environments: expertise firms (VSEs, SMEs, groups up to €22 million in turnover), multi-company businesses (€100 million in turnover, 4 entities), and managed and developed a department of 13 employees, in the context of the arrival of electronic invoicing and the restructuring of the profession.

My areas of intervention:
✔ Accounting, taxation
✔ Social aspect: payroll, social charges, employment contracts
✔ Management accounting and controlling
✔ Management: treasury, dashboards, reporting
✔ Structuring and automating financial processes
✔ Preparation and deployment of electronic invoicing
✔ Supervision of accounting teams, skills development, and operational management

Comfortable with urgent missions, ongoing transformations, and organizations that need a senior operational profile from day one.

My availability varies depending on the period - do not hesitate to contact me to discuss your needs and find the right timing.
  • French

    Native or bilingual

Can work on-site
Lyon (up to 10km), Lentilly (up to 20km)

Experience

  • Cabinet d'expertise comptable
    Interim Management
    CONSULTING AND AUDITS
    May 2026 - June 2026 (1 month)
    Lyon, France
    Support for a human-sized accounting firm in a phase of structuring and modernizing its organization.

    Main objective: to give managers back time to focus on prospecting and development, by automating internal management, optimizing client file tracking tools and processes, and structuring team practices.

    Main actions carried out:
    — Complete audit of the internal organization
    — Implementation of internal production and firm management processes
    — Updating and validating the client database
    — Optimization of software tools and structuring of client file tracking
    — Structuring employee practices and harmonizing work methods
    — Preparation for electronic invoicing: tool selection, method implementation, and employee training
    — Support for the firm during a trade show

    Mission carried out as an external consultant, with an operational and educational approach adapted to a small structure.
    Process Optimization Electronic Invoicing Training Best Practice Business Process Automation
  • Pyramide Conseils
    Data Department Manager
    CONSULTING AND AUDITS
    April 2024 - November 2025 (1 year and 7 months)
    Lyon, France
    Development and structuring of a Data department.
    A pioneering service in accounting expertise in France, with the creation of a new data controller role dedicated to validating and automating accounting processes.
    Management of a team of 13 employees, modernization of production, strengthening of data quality, and preparation of teams for the electronic invoicing reform.
    Operational management, organization, recruitment, skills development, and inter-departmental coordination.
    Implementation of workflows, tools, and methods to validate production, reduce delays, and support clients in their digital transition.
    Team Management Electronic Invoicing Process Optimization Recruitment Business Process Automation
  • CBTW
    Head of Accounting France
    TECH
    October 2023 - February 2024 (4 months)
    Lyon, France
    Head of Accounting for France during an interim management assignment, replacing the previous Head of Accounting.
    Supervision of accounting for the 4 French companies: accounting operations, monthly and annual closings, tax declarations, and analytical monitoring.
    Coordination with internal teams and securing deadlines in a high-activity context.
    Accounting Tax Filings Accounting Review

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Education

  • DSCG (Higher Diploma in Accounting and Management) 6/7 UV
    IFCE Strasbourg
    2015
  • DCG (Accounting and Management Diploma)
    Lyon III IAE
    2010

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