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Montassar HssainiaMH

Montassar Hssainia

Project Manager Finance / Billing / Collections

€550/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Montassar

17 years of experience in the Order-to-Cash (O2C) cycle: billing/invoicing, collections/dunning, accounts receivable management, and cash flow steering in international environments. Expert in ERP (SAP FI/CO, Oracle, Sage, CODA) and billing digitalization (e-invoicing, Chorus Pro, Cegedim), with a strong ability to optimize financial processes, reduce DSO, secure cash-in, and automate reporting (advanced Excel, KPI, Power BI, forecasts). Proven leadership in change management, team coordination, and Agile/Scrum project management. Trilingual (FR/EN/AR), capable of leading digital transformation and compliance projects (electronic invoicing, IFRS, SOX).
  • Arabic

    Native or bilingual

  • English

    Fluent

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

Experience

  • Hitachi Rail GTS France
    Contract Financial Manager / Finance Team PMO
    TRANSPORTATION
    October 2024 - Today (1 year and 8 months)
    Vélizy-Villacoublay, France
    Managed multi-country project billing (Europe, Africa, Gulf) on SAP.
    Consolidated and monitored financial contracts: KPI reporting, cash-in forecast, DSO, margins.
    Calculated and monitored price revisions, managed collections and bank guarantees.
    Cross-functional collaboration with Business Line, Controlling, Treasury, and IT teams.
    Contributed to improving financial processes and ensuring SAP data reliability.
    SAP Billing
  • Association guildopentech
    Digital Project Manager (Volunteer)
    CIVIC AND SOCIAL ORGANIZATIONS
    April 2023 - Today (3 years and 2 months)
    Paris, France
    Developed a mobile application to detect additives in agri-food products.
    Wrote the functional specifications (specifications, user journeys, key features).
    Managed the project team (developers, UX/UI, data).
    Defined and monitored the product backlog (Agile/SCRUM method), tracked milestone planning and budget.
    Scrum Agile Method Project Management
  • ELIOR RESTAURATION FRANCE
    Billing Expert Coordinator & Dematerialization Project Manager
    RESTAURANTS AND FOOD SERVICE
    April 2023 - October 2024 (1 year and 6 months)
    Courbevoie, France
    Supported and provided expertise to the group's billing teams.
    Supported and harmonized O2C processes for group entities.
    Managed the SAP migration project and consolidation of legal data.
    Designed and implemented dematerialization solutions for customer processes.
    Updated customer Master Data and ensured reliability of billing flows.
    Monitored performance (KPI, DSO, dematerialization rate, credit note rate).
    SAP Billing Reporting Team Management Microsoft Excel

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Education

  • Master's in Risk Management and Audit
    ESSEC
    2008
  • Master's in Information and Communication Technology
    SUPCOM
    2007

Skill set

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