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Benoit RousseauBR

Benoit Rousseau

Senior Data & AI Architect

€890/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Benoit

Hands-on Senior Data Architect, 25 years of experience in designing and delivering large-scale data platforms in complex and regulated environments (banking, defense, telecoms). Core expertise across the entire data spectrum: ingestion, streaming, storage, distributed querying (Trino), graph databases, and governance - on-premises, hybrid, and multi-cloud. Over the past two years, this foundation has been extended to production GenAI: multi-role RAG pipelines, VoIP transcription (STT), LLM inference (vLLM), vector search (OS, ES, Vespa), and graph-retrieval augmented search - in air-gapped environments where cloud shortcuts are not an option. Proven ability to deliver where others only do POCs: from Hadoop platforms to next-generation Lakehouse architectures, consistently bridging technical depth with measurable operational results.
  • English

    Native or bilingual

  • French

    Native or bilingual

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

Experience

  • Confidentiel
    GenAI Architect
    DEFENSE AND MILITARY
    February 2025 - Today (1 year and 4 months)
    Paris, France
    • Design and deployment of an on-premises VoIP transcription and meeting summary generation solution (lead role)
    • Extension, documentation, and industrialization of a self-RAG MVP into a production multi-role RAG solution, deployed in independent instances by classification level up to restricted level (architect)
    • Architecture study: sovereign on-device AI companion, integrated into the Office suite — zero cloud dependency
    • Technologies: Cisco CMM, Asterisk, RAG, Mistral, Weaviate, vLLM, Pyannote, Faster-Whisper
    Architecture GenAI voip RAG VOIP AI
  • BNP Paribas
    GenAI Architect
    BANKING AND INSURANCE
    February 2024 - April 2025 (1 year and 2 months)
    Paris, France
    • Design & deployment in PRD of a 100% on-premises Machine Learning + RAG solution to optimize IT incident management (measured MTTF reduction). (pivot role)
    • Creation of a unified graph DB schema integrating multiple CMDBs (assets + IT events) for robust root cause analysis (lead role).
    • Evaluation and exploration of Vespa for scalability and advanced vector management (lead role).
    • Close collaboration with business and technical teams to deliver scalable and reliable solutions (6k+ unique users/day).
    • Documentation of architectures and reusable frameworks.
    • Technologies: TigerGraph, Kafka, vLLM, Elasticsearch, Vespa, RAG, LLAMA
    RAG Metadata Management MDM IT Architecture graphdb
  • Credit Agricole
    Data Architect
    BANKING AND INSURANCE
    November 2021 - July 2023 (1 year and 8 months)
    Paris, France
    • Leadership of the architecture and technical integration of 2 CDP clusters, with migration of use cases from HDP.
    • Direction of integration and architecture initiatives for the multi-tenant Dataiku CDP platform (data science in retail banking).
    Software Architecture SQL System Integration Big Data CDP

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Education

  • Business - Information Systems DEST
    Arts & Métiers
    1997
    Métiers - DEST Système d'information

Skill set

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