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Pierre L.PL

Pierre L.

Lead Data Architect (Lakehouse/DWH), AI LLM Expert

€833/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Pierre

I support organizations that want to reach the next level: better organize their data, industrialize their analytical uses, and integrate AI in a pragmatic, secure, and cost-controlled manner.

Senior Data Architect with over 15 years of experience, I combine business understanding and technical expertise to identify your KPI needs and functional challenges. From this dialogue, I design and deliver robust and scalable data platforms, from traditional DWH to modern Lakehouse.

I designed and built the DWH for a major optics company in France from scratch, a program of several thousand person-days deployed over 6 years.

Data Architecture

Lakehouse / DWH design on Snowflake and Databricks. Modeling, pipelines, governance, migration from legacy systems.

AI & LLM Agents

Deployment of intelligent agents connected to your business data, in an on-premise environment via Ollama or via the APIs of the main LLMs on the market, depending on your performance, confidentiality, and cost constraints.
A particular focus is placed on GDPR issues, the protection of industrial secrets, and the control of data flows.

Design and configuration of end-to-end agent environments, particularly around the MCP protocol: data ingestion, vectorization, orchestration of tools and agents, access security, and then contextualized restitution of results to business users.

Industrialization

What differentiates me from a classic data engineer: a rigorous software culture (TDD, DDD, CI/CD, hexagonal architecture) for maintainable, tested, and documented deliverables.

We can collaborate on-site, within your functional and technical teams, in a hybrid or full remote manner.

Sectors: banking, insurance, retail, industry, anywhere data is a strategic asset.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 30km)

Experience

  • Intekeo
    Data Architect / Consultant
    CONSULTING AND AUDITS
    January 2010 - Today (16 years and 5 months)
    Paris, France
    • Le Printemps — Retail: Supported SAP/Fiori rollout for procurement/logistics; optimized purchasing data models.
    • PopHint (Side Project): Developed a geolocated mobile announcement service (Android, Java, Python, Elixir/Phoenix, React Native).
    • Crédit Foncier de France: Oracle expert in a 1.5-billion-row database migration; designed schema and automated ETL scripts; remote delivery.
    • Co-founder & CTO — Min & Max: Built a customer incident tracking platform to improve continuous service quality (Java, Python, Ruby on Rails, PostgreSQL).
    • CNED — Technical Auditor: Conducted a comprehensive audit and diagnostic of the CNED's digital platforms, preparing the organization for the rollout of its e-commerce ecosystem.Delivered actionable recommendations aligning technology, pedagogy, and online learning strategy.
    • Direct Energie — Technical Auditor: Led a full technical and functional audit of data integration flows between ENEDIS and Direct Energie, ensuring reliability and regulatory compliance. Strengthened data quality and performance across critical business interfaces.
    SQL Java Python SAP JavaScript / TypeScript
  • Audioptic Group (Optic2000)
    Data Architect & AWS Migration Developer
    RETAIL (SMALL BUSINESS)
    January 2019 - January 2026 (7 years)
    Clamart, France
    Designed and governed a multi-source data warehouse (Python, PostgreSQL, AWS/Oracle, Claude + Claude Code Agents). Migrated legacy to AWS; enabled multi-PMS integration across 1,200 stores (~60k files/day). Delivered business datamarts (executive, marketing, purchasing, logistics).

    I designed the entire data system (starting from end of 2019) and with years, brought a lot of innovations. The last one was the introduction and training of my team to LLMs. We have cut the cost and sped up the delivery process.
    Python Amazon Web Services PostgreSQL AI & LLM Agents Snowflake
  • Deloitte
    Data Architect
    January 2020 - July 2020 (6 months)
    Industrialized financial audit data via Python ML pipelines and Docker, automating environments and ensuring reproducibility.
    Docker Python Programming Dremio Pentaho

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Education

  • Dual Master's Degree
    École Centrale Marseille
    Dual Master's Degree

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