Freelancer profile translated to English.
Back to original languageAbout William
Financial and data transformation consultant with 8 years of experience, I support leading financial institutions in modernizing their financial, regulatory, and decision-making systems. My approach is results-oriented: ensuring data reliability, optimizing processes, and accelerating financial production while securing compliance. I work on high-impact strategic programs, in management or transverse coordination roles, including:
- Data migration within complex ERP transformations (Agresso to Oracle Cloud), with data flow security and quality control.
- Production and reliability of regulatory reporting (AnaCredit, SHS).
- Transformation of financial, budgetary, and analytical reporting (Essbase to Tagetik).
- Deployment of consolidation and management solutions (OneStream).
- Consolidation of a portfolio of €138 billion under SAP Financial Consolidation.
- Post-merger integration of two entities within a large international group.
- Overhaul of annual accounts production, reducing the deadline from 10 to 2 days.
- Optimization of closing cycles with significant deadline reductions.
Specializing in data exploitation, structuring, and automation, I leverage tools such as Power BI and Alteryx to design reliable, dynamic, and strategically-oriented reporting.
Accustomed to complex environments, I bridge the gap between finance, business, and IT departments. Autonomous, rigorous, and committed, I deliver tangible value from the first few weeks: scoping, workshop facilitation, process formalization, data flow security, and change management.
French
Native or bilingual
English
Native or bilingual
Can work on-site
Paris (up to 50km), Lyon (up to 50km), Nantes (up to 50km), Bordeaux (up to 50km), Lille (up to 20km)
Experience
- AxioneFinance / Functional Consultant – Migration to Oracle ERP CloudTELECOMMUNICATIONSMarch 2026 - Today (3 months)Malakoff, FranceAxione Mission: Finance / Functional Consultant – Migration to Oracle ERP Cloud
- Analysis of existing processes and collection of business requirements for the EMEA region
- Formalization of processes and writing of operational procedures to secure practices and facilitate change management
- Correction and monitoring of incidents in conjunction with IT teams to ensure solution stability
- Management of the User Acceptance Testing (UAT) phase: testing strategy, business/IT coordination, anomaly tracking
- Collection of requirements and contribution to the design of decision-making reports (OTBI, BI Publisher)
- Implementation of controls on interfaces to ensure the consistency of accounting postings
- Analysis of discrepancies and adaptation of Order-to-Cash and Purchase-to-Pay flows to integrate e-invoicing mechanisms (AR/AP, invoicing interfaces, posting schemas)
- Control and security of inter-module flows (PPM → GL) ensuring the reliability of financial data
- Review and monitoring of module configuration (PPM, GL, AR, AP, FA & SCM)
- Analysis of discrepancies and configuration recommendations to align business needs with ERP standards
- Contribution to the structuring of the general ledger (GL) and the alignment of inter-module flows (PPM, AR, AP) to ensure the consistency of financial data and reporting in an ERP transformation context
- Facilitation of business workshops and scoping of target processes for the migration to Oracle Cloud
- BNP Paribas CardifFinance Transformation ConsultantBANKING AND INSURANCEApril 2025 - March 2026 (10 months)Nanterre, FranceMission – BNP Cardif – EMEA Region: IT Business Analysis - Migration and transformation of financial, budgetary, and analytical reporting (Tagetik environment)
- Analysis of existing processes and collection of business requirements for the EMEA region Identification and prioritization of operational pain points (closing deadlines, manual adjustments, clarity of budget variances)
- Facilitation of business workshops (IT, management control, finance)
- Writing of functional specifications for the exploitation and optimization of data from Tagetik (Activity, IFRS 17 & 4, Financial Margin)
- Design and writing of clear and testable user stories
- Anticipation of project risks (data quality, deadlines, adherence to business needs) Management of functional acceptance testing in coordination with IT teams and business users
- Automation of reporting and rationalization of processes using Alteryx
- Design and deployment of a structured historical database, ensuring data traceability and reliability of forecasting exercises
- CAL&F - Crédit Agricole Leasing & FactoringScoping of the Fast Close ProjectBANKING AND INSURANCEJune 2023 - December 2023 (6 months)Montrouge, FranceCrédit Agricole Leasing & Factoring Mission: Scoping of the fast close project
- Definition of a structured work program for account closing, budget and forecast, risk, and ALM processes
- Detailed mapping of account closing processes and accounting control systems
- Conducting interviews, business workshops, and writing meeting minutes to define requirements
- Independent review of the design and effectiveness of controls (sampling and audit trail analysis)
- Identification and modeling of input and output flows of accounting and financial tools Critical analysis of existing processes and proposal of functional and operational optimizations
- Formalization of findings and structured recommendations
- Sharing conclusions with management and operational teams, supporting the implementation of corrective actions
- Participation in transverse Finance projects, in a context of Fast Close transformation and strengthening of defense lines
- Writing of functional specifications in conjunction with business and IT teams
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Education
- CertificationAlteryxCertification
- Expert Title in Financial Engineering, RNCP Level I DiplomaESG Finance2019Titre d'Expert en Ingénierie Financière Diplôme RNCP de niveau I
Certifications
- Power BI Data Analyst AssociateMicrosoft2023
- AMF Certified (%A: 91; %C: 96)Autorité des marché Financiers2019