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Olivier DelfosseOD

Olivier Delfosse

Senior AI Engineer | RAG & LLMOps

€850/day
Nantes, FR
8-15 years

Average response time: 1 hour

About Olivier

Vous voulez passer du PoC IA à la production ? Je conçois et déploie des systèmes d'IA générative fiables sur GCP : pipelines RAG, intégration LLM et data pipeline, APIs backend (FastAPI), observabilité (Langfuse) et évaluation.

Résultats concrets :
- Data pipeline incluant de l'extraction LLM avec évaluation sur +18k annonces immobilières et score de matching semantic (Vertex) sur almo.fr
- Chatbot juridique IA en production, première page Google sur les requêtes cibles (robindesdroits.com)
- Pipeline RAG < 2s de latence, taux d'hallucination réduit de 18%
- Infrastructure de paiement $700M+ (Request Network, YC W17)

Actuellement fractional CTO chez Almo (PropTech AI).
9+ ans d'expérience, de la data science au GenAI en production. GCP Certified Cloud Architect.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Nantes (up to 50km), Paris (up to 10km), Angers (up to 10km)

Experience

  • ALMO
    Fractional CTO
    REAL ESTATE
    March 2026 - Today (3 months)
    Nantes, France
    AI-powered platform matching retail space seekers with commercial brokers. 18,000+ active listings.

    Built: LLM enrichment pipeline (Gemini on Vertex AI, structured extraction with eval loop), listing quality scoring. Hybrid matching engine with deterministic score + Vertex AI Search cross-encoder semantic rerank.

    Stack: GCP · Vertex AI · Python · TypeScript (Next.js) · PostgreSQL (Supabase)
    Google Cloud Platform (GCP) Python IA générative Supabase Vertex AI
  • Robin des Droits
    Technical Founder
    LEGAL
    February 2026 - May 2026 (3 months)
    Nantes, France
    Built and launched robindesdroits.com, AI legal chatbot (Langfuse). Ranking on Google's first page for targeted legal queries.
    Stack: GCP · Python (FastAPI) · Typescript (Next.js) · Firestore
    Google Cloud Platform (GCP) Python FastAPI LLMs Vertex AI
  • Copilex
    Senior Backend & GenAI Engineer, Freelance
    LEGAL
    December 2025 - February 2026 (2 months)
    Paris, France
    Rearchitected the backend of a legal RAG system. Improved grounding accuracy and reduced hallucination rate by 18%.

    Stack: GCP · OpenAI · Python (FastAPI, LangChain) · React · PostgreSQL (pgvector)
    Python FastAPI RAG PostgreSQL Google Cloud Platform (GCP)

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Education

  • Engineering degree
    Arts et Métiers ParisTech - École Nationale Supérieure d'Arts et Métiers
    2015
    Engineering degree from a French Grande École. Specialization in Information & Knowledge Systems: data mining and decision modeling.
  • Classe préparatoire, PSI
    Saint-Stanislas, NANTES
    2012

Certifications

Skill set

Categories

  • Other