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P-A CaillaudPC

P-A Caillaud

Generative AI Expert | Agent Architectures

€700/day
Nantes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About P-A

🚀CTO, Software Architect & Generative AI Expert

With over 8 years of experience in backend development and deep expertise in artificial intelligence, I am currently CTO & co-founder of **AI SmartTalk**, a startup specializing in autonomous conversational agents. I help companies design, implement, and deploy complex solutions at the intersection of software development and LLMs.

💡What I offer:
  • Design of advancedagentic architectureswith LangGraph.js / LangChain.js
  • Integration of models like OpenAI, Mistral, or LLaMA for RAG, business assistants, or automated tools
*Robustbackend development in PHP (Symfony), Node.js, or Python
  • Setup of containerized infrastructures (Docker, RabbitMQ, GitLab CI)
  • Relational databases (PostgreSQL, MySQL), Supabase and Prisma integration

🧠I enjoy working on:
  • Autonomous or augmented AI systems
  • Business tools enhanced by AI
  • Custom APIs for web or SaaS applications
  • Refactoring complex legacy systems

🎯My goal:to put AI to work for productivity, autonomy, and scalability, whether in your internal tools, your products, or your R&D projects.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Nantes (up to 50km), Niort (up to 50km)

Experience

  • AI SmartTalk
    CTO & Co-founder
    February 2024 - Today (2 years and 4 months)
    Key Responsibilities and Achievements:
    • Led the development of large-scale AI agent frameworks with a strong focus on LangGraph.js and LangChain.js, building robust, composable workflows for reasoning, memory, and tool orchestration in JavaScript/TypeScript environments.
    • Designed and maintained reusable agent patterns including dynamic routing, branching logic, persistent state, and multi-step execution, leveraging LangGraph's custom nodes and event-driven flows.
    • Built modular LangChain.js-based tools integrated with OpenAI, LLaMA, Mistral, and third-party APIs, supporting both synchronous and asynchronous agent capabilities.
    • Architected full-stack microservice systems in Node.js/TypeScript with PostgreSQL and Supabase for durable memory and chat history, Prisma ORM, and Chroma for semantic retrieval (RAG).
    • Developed isolated agents in Python for experimentation and backend tasks requiring lightweight, standalone LLM capabilities with memory control and API chaining.
    • Delivered scalable infrastructure using Docker, RabbitMQ, and CI/CD pipelines (GitLab CI), with a fully containerized architecture enabling rapid testing and deployment of autonomous agents.
    • Oversaw frontend/backend communication via WebSockets, enabling real-time interaction and feedback loops with agents across distributed systems.
  • Acolad Freelance
    PHP Expert
    June 2024 - August 2024 (2 months)
    Paris, France
    To leverage my skills and experience to implement new LLM technologies within a CAT tool, while also contributing to the open-source community. My goal is to enhance the
    tool's capabilities, improve user experience, and contribute to the development of innovative solutions. I am seeking a challenging role that allows me to apply my knowledge and skills to real-world projects, while also providing opportunities for professional growth and development.

    PHP 8, MySQL, Docker, gitlab ci.
  • TextMaster Freelance
    PHP developer
    July 2023 - February 2024 (7 months)
    Paris, France
    Experienced in Middleware maintenance using Symfony 5 and PHP 8, focusing on integrating Akeneo API with TextMaster's web translation solution. Expertise in API connectivity and data synchronization for streamlined content translation workflows.

    Symfony, PHP 8, MySQL, Docker, gitlab ci.

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