Concretely?

To maximize fraud detection while minimizing customer impact, La Banque Postale leverages Data Science as part of its ongoing fraud prevention framework. This enables the bank to better target high-risk transactions.

As part of its payment fraud prevention initiatives, Oresys contributed to building anti-fraud algorithms covering checks, card payments, and direct debits.

Oresys’ scope spanned four main areas:

1. Behavioral analytics of both legitimate and fraudulent customer activity;

2. Transaction modeling to identify weak signals indicating potential fraud;

3. Dashboard development to monitor model performance and data drift;

4. Data Science practice evaluation to accelerate and streamline the model lifecycle while promoting greater algorithm transparency in preparation for upcoming regulatory changes, including the AI Act.

Oresys’ approach significantly improved rule relevance and coverage. These advancements enhanced alert precision, increased fraud capture rates, and yielded a substantial reduction in associated financial losses.

To comply with this regulatory requirement (freezing funds and prohibiting the provision of products or services to individuals involved in acts of terrorism, financing, and weapons proliferation), the bank launched a three-phase program to secure its processes and infrastructure under the direct supervision of the ACPR.

The goal of Phases 1 & 2 was to address technical and functional vulnerabilities and secure critical activities to meet the mandatory compliance standard set by regulations.

Phase 3 aimed to strengthen system quality and traceability by expanding the scope to new key dimensions (data repository quality, tracking of audit evidence, and managing the real-time dissemination of Asset Freezing data across subsidiaries).

La Banque Postale entrusted Oresys with the operational management of the Asset Freezing program across all three phases, covering every stage (opportunity, feasibility, execution) and all workstreams. The Oresys team provided overall end-to-end program governance, mapped and documented over 60 business processes, conducted a maturity assessment and risk mitigation across group subsidiaries, managed Business Analysis (AMOA) for IT enhancements, improved data repository reliability, and drove IT system convergence toward full auditability.

Our process-driven approach, combined with end-to-end technical-functional expertise and critical analysis across functional, technical, and IT domains, directly contributed to achieving the project’s objectives.

To meet customer acquisition, retention, and regulatory compliance goals, an ambitious roadmap was defined with three major releases per year, including the following key projects:

• New offerings: Premium accounts, minor accounts, interest-bearing savings products

• New services: Self-service wire transfers, international money transfers, cashback, vouchers, personalized notifications

• Referral program

• Overhaul of the onboarding journey

• New account aggregator

• Generic and reusable open APIs used by partners (international transfers, cashback, financial coaching, etc.)

• Regulatory compliance updates

The Oresys team contributed across the full delivery cycle of each release over a three-year period: steering, scoping, partner contracting, design, user acceptance testing (UAT), change management, and deployment.

Oresys brought its project management expertise to secure the delivery cycle in a complex environment with multiple stakeholders, ensuring the bank met its acquisition targets and time-to-market commitments.

The SPN department is responsible for supporting digital initiatives and managing the associated project portfolio. Each year, it defines and monitors the division’s digital roadmap in order to provide an effective and consistent response to business needs.

This roadmap is built both on the needs expressed by the business teams to SPN and on the strategic master plan defined in collaboration with the national delivery organization.

Since 2022, Oresys has been supporting EDF DIPDE in defining its annual digital roadmaps, regularly tracking progress against objectives, and communicating results to the Executive Committee (CODIR). In addition, Oresys has played a key role in supporting several digital projects from the scoping phase onward, including: establishing a DIPDE Data/AI governance framework; scoping and managing a project to interface two information systems; scoping the digitalization of the production of technical and documentary deliverables; producing the division’s information system landscape; and conducting cybersecurity awareness initiatives.

The collaboration between Oresys and DIPDE has enabled the prioritization of DIPDE’s major digital transformation initiatives and the effective launch of projects.

The City of Marseille aims to modernize its occupational health management by transitioning from paper-based records to a fully digitized solution. This initiative addresses key challenges: meeting regulatory requirements, securing sensitive data, and improving the monitoring of medical activities.
Oresys supported the City of Marseille in defining the needs of two medical departments and selecting the most suitable solution on the market. This phase enabled the implementation of a new Medical Information System.
We contributed to the design alongside the software vendor, supported data migration, organized testing phases, and prepared and facilitated the change management process. Oresys played a crucial role in guiding teams as they adapted their practices to the new system.
This collaboration resulted in the deployment of a Medical Information System that enhances the monitoring of the City’s 15,000 employees by streamlining the management of medical records.

A tool for assessing the maturity of large infrastructure project management across four dimensions:
•Organization responsible for major projects
•Large project resources
•Management of a major project
•Response to contingencies

This hands-on, operational approach, conducted over 2 to 3 weeks by an expert, focuses on the essentials and provides:
•A visual maturity assessment based on targeted interviews and a few workshops
•A benchmark against other organizations and sectors where a similar approach has been implemented
•Recommendations for priority improvement initiatives