Freelancer profile translated to English.

Description

SI Architect with 14 years of experience in the transformation and modernization of complex information systems (banking, energy, health).

I am involved in missions of analyzing existing architecture, defining modernization trajectories, and implementing cloud and DevOps platforms.

Main expertise:

Application platform modernization
Cloud and hybrid cloud architecture
DevOps platforms / Platform Engineering
CI/CD industrialization
Structuring technical roadmaps and architecture trajectories

Accustomed to critical environments and complex IS requiring a strong understanding of the existing and a progressive structuring of transformations.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

Archerry Consulting
IA Platform Architect / Kubernetes — RAG & Industrialization Frameworks
CONSULTING AND AUDITS
January 2026 - April 2026 (3 months)
Paris, France
Design of an industrializable hybrid RAG architecture demonstrator, focused on a cloud-native AI platform on Kubernetes, for ingesting, indexing, and retrieving multi-source documentary corpora.
Objective — design a replicable technical framework for a production RAG platform: multi-source ingestion, indexing pipelines, versioned storage, hybrid retrieval, AI middleware, and Kubernetes operability.
Architecture & detailed design (LLD)
• Detailed design (LLD) of a modular RAG architecture deployable on Kubernetes
• Formalization of technical components: ingestion, ETL, indexing, retrieval, reranking, API exposure
• Structuring of technical flows, inter-service contracts, and integration patterns
• Definition of operational, observability, and industrialization standards
Data ingestion & indexing
• Design of a multi-source ingestion chain with dedicated connectors for each documentary source
• Integration of a first industrialized connector on public corpora (data.gouv.fr), extensible to other sources
• Implementation of versioned object storage under MinIO (raw, extracted, chunks, manifests)
• Design of multi-branch ETL pipelines for normalization, enrichment, and index preparation
Retrieval & AI services
• Design of a hybrid retrieval architecture (semantic + lexical)
• Dual indexing: Elasticsearch (BM25 / sparse retrieval) + Qdrant (dense retrieval)
• Orchestration of fusion, scoring, and reranking strategies
• Structuring of an AI middleware framework for exposing augmented search capabilities
Platform industrialization
• Cloud-native deployment of components on Kubernetes
• Structuring of industrialization patterns: CI/CD, GitOps, observability, operability
• Preparation of the framework for production deployment (operability, resilience, run standards)
Kubernetes DevOps External API Integration CI/CD RAG
DXC Technology
APHP — SI Architect / Modernization
MEDICAL
May 2025 - December 2025 (7 months)
Paris, France
Strategic Framework and Reliability of DPI Degraded Modes
Context
Program to secure DPI degraded modes to ensure the continuity of service of the hospital IS.

Achievements
Mapping of technical components and IS dependencies
Impact analysis and identification of critical points
Construction of target architecture scenarios
Structuring of modernization trajectories

Impact
Decision support for the evolution of a critical component of the hospital IS.

Environment
OVH Cloud, Dedalus (ORBIS, HYDMEDIA), Active Directory, Java EE, Python
Active Directory SI Architecture Application Architecture SI Modernization OVH Cloud
DXC Technology
AFD — SI Modernization Architect
PUBLIC SECTOR
June 2024 - December 2024 (6 months)
Paris, France
Reduction of Technical Debt & SI Modernization Strategy
Context
Diagnosis of technological obsolescence and definition of an SI modernization strategy.

Achievements
Analysis of technical stacks and identification of obsolescence
Prioritization of assets based on criticality and risks
Definition of a modernization trajectory
Structuring of an SI evolution roadmap

Impact
Consolidated view of obsolescence and transformation plan for the IT department.

Environment
RedHat, Windows Server, middleware, application stacks.
SI Architecture Middleware Obsolescence SI Modernization SI Transformation