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Romain MartinezRM

Romain Martinez

AI Engineer | AI Agents, RAG, LangGraph | ex-CTO

€620/day
Lyon, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Romain

I design and deploy AI agents and RAG systems that actually run in production.

And not demos that stay in a notebook.

AI Agent & RAG (Python, LangGraph)
I designed and developed Pikai alone, an AI agent platform for SEO/GEO: multi-agent engine in Python/LangGraph, LLM orchestration, proprietary algorithms, JSON workflow configuration. A product in production, not a local POC.

What I can concretely do:
  • Multi-step AI agent architecture with LangGraph
  • RAG pipelines (Qdrant, embeddings, retrieval quality)
  • LLM orchestration in production (costs, latency, reliability)
  • Integration into existing stacks (API, RabbitMQ, SQL/NoSQL)

CTO as a Service for post-PMF startups
Before AI, I spent 5 years as CTO at Wever, leading the complete architecture redesign (V2). A project that directly contributed to a funding round and product internationalization.

Specifications, code quality, security/GDPR (DPO), team coordination.

Today, I put this experience to work for startups part-time: architecture audit, roadmap definition, tech team structuring, or support for the first technical hire.

I code my AI systems with the rigor of someone who has already managed a production-scale architecture.

Stack: Python, LangGraph, LangChain, Django, PostgreSQL, MongoDB, RabbitMQ, Qdrant.

Based in Lyon, available for occasional in-person meetings in Lyon, Paris, Grenoble, Annecy, Geneva, Aix-en-Provence, and remotely on a daily basis.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Lyon (up to 50km), Paris (up to 20km), Aix-en-Provence (up to 10km), Grenoble (up to 20km), Annecy (up to 30km)

Experience

  • Pikai
    Founder
    CONSULTING AND AUDITS
    July 2024 - Today (2 years and 1 month)
    Lyon, France
    Complete design and development of an AI Agents platform
    (LangGraph, Python) for SEO/GEO optimization. In production, not a POC.

    The engine orchestrates multi-agent workflows that combine LLM,
    proprietary algorithms, and API data to automate decision-making.
    Modular architecture: a new workflow is created from a simple JSON
    configuration, without touching the engine code.
    Python LangGraph AI Agent LLM RAG
  • wever
    CTO
    TRANSPORTATION
    May 2019 - May 2024 (5 years)
    Antibes, France
    Senior Software Architect and Technical Director of a
    scale-up transportation platform — architecture redesign that directly
    contributed to a funding round and product internationalization.

    I managed the entire technical lifecycle of the application:

    • Redesign & V2 Architecture: stack choices, data modeling, deployment
    with country-specific data storage management for international expansion.
    • Project & Quality Management: functional and technical specifications,
    code quality management, development team coordination.
    • Security and Compliance: platform security and confidentiality manager
    as DPO.
    • POC Development to validate feature feasibility.

    This experience illustrates my ability to deliver robust architectures
    and manage complex projects from end to end. Exactly what a post-PMF
    startup looks for in a part-time CTO.
    IT Strategy IT Project Management Technical Specifications Software Architecture Scalability
  • Micromania zing
    Development Engineer
    RETAIL (LARGE RETAILERS)
    April 2013 - April 2018 (5 years)
    Valbonne, France
    Development of custom web applications (PHP/JS) for the
    accounting, logistics, and marketing departments. Complete project life
    cycle management.

    From writing specifications with business teams to deployment, including
    coordination with external providers. I also provided training to the
    teams on the developed tools to ensure their adoption.
    PHP IT Project Management SQL

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Education

  • Engineer
    3il
    2009

Skill set

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