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Guillaume BrauxGB

Guillaume Braux

AI Product Owner, LLM & RAG | CTO

€650/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Senior Product Owner and Product Manager. I help companies transform an idea or a struggling product into something well-defined, specified, and delivered.
I handle the entire product lifecycle: discovery, gathering and defining requirements, writing functional specifications (user stories, business rules, acceptance criteria), building and prioritizing the backlog, managing Agile/Scrum delivery, and testing. I lead ceremonies, coordinate the tech team, and maintain the roadmap.
My differentiator: I am CTO and co-founder of an active company, and I've been coding for years. Therefore, I speak the same language as developers today, I evaluate technical feasibility with them, and I make informed trade-off decisions. For a client, this means fewer unrealistic specifications, less disconnected roadmaps, and a PO who isn't misled by the tech team. Building and operating my own product end-to-end has also trained me to focus on results: ROI, time to market, user impact.
Generative AI specialization. Master's in AI from Jönköping University and Epitech Paris. I have defined and delivered LLM, RAG, and LangChain modules in production, and more recently AI agents — demand for which has exploded (x60 in one year on Malt). If your product integrates AI (chatbot, RAG, automation, copilot, agent), I know what works, what's expensive, how to measure real quality, and how to avoid pitfalls (hallucinations, GDPR, vendor lock-in).
I've been leading myIKKI for 3 years, working with private and public clients (B2G, public sector), which has taught me to navigate long decision cycles, strict GDPR requirements, and public procurement.
Through Chirone Tech, I assist large corporations and SMEs with AI project definition, audits, and training.
Based in Paris, available for full-time or part-time Product missions, on-site or remote.
Let's discuss your project within 24 hours; I respond quickly.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • myIKKI
    Product Owner - Chief Technical Officer (CTO)
    SOFTWARE PUBLISHING
    May 2023 - Today (3 years and 3 months)
    End-to-end product design and management, from ideation to production.

    – Led the entire product lifecycle of myIKKI: scoping the vision, defining functional scope, writing functional & technical specifications (user journeys, business rules, user stories, acceptance criteria), through to testing and commissioning.

    – Facilitated product discovery and design workshops with the CEO, partners, and users; built and prioritized the backlog; managed all Agile ceremonies (planning, refinement, review, retrospective) over 24+ months of continuous delivery in 2-week sprints.

    – Supervised a team and coordinated external contractors for delivery: task allocation, progress tracking, ensuring quality and meeting deadlines.

    – Scoped generative AI modules (LLM, RAG, LangChain): use case analysis, model selection, quality measurement.

    – Coordinated Business & IT (MOA/MOE), translated business objectives into actionable deliverables, managed functional acceptance testing and user support, with GDPR integrated from the design phase.

    Achievements:
    - myIKKI application designed and delivered end-to-end, from concept to production
    - Team and contractors managed throughout the delivery cycle
    - Hallucination rate reduced by 30%+ after iterating on prompt design
    Product Owner Business Analysis Functional Specifications Backlog Management Generative AI
  • Chirone Tech
    Product Owner & AI Consultant
    CONSULTING AND AUDITS
    December 2022 - Today (3 years and 8 months)
    Consulting and service activities in AI, blockchain, and web development for client companies.

    – Conducted audit and consulting missions for large corporations and SMEs: analysis of existing systems, identification of AI and blockchain use cases, process mapping, writing specifications and roadmaps.

    – Designed and delivered corporate training on generative AI (LLM, prompt engineering, RAG), blockchain (Smart Contracts, Web3), and web development.

    – Designed and delivered custom solutions: intelligent chatbots, RAG systems, business workflow automation, decentralized applications — with systematic functional and technical documentation.

    – Supervised a team and coordinated contractors on client projects: scoping objectives, regular monitoring, skill development.

    Achievements:

    Large corporations and SMEs supported on AI audit, consulting, and training projects
    Solutions delivered to production: intelligent chatbots, RAG systems, decentralized applications
    Team and contractors supervised on client missions
    Business Analysis Project Scoping Consulting Specifications Document Training
  • Bob Conseil
    Intern Product Owner & Blockchain Developer
    TECH
    April 2021 - August 2021 (4 months)
    – Gathered and formalized business requirements in decentralized finance and tokenomics; translated them into functional and technical specifications usable by the development team.

    – Designed and developed Smart Contracts (Solidity) and DApps; modeled DeFi solution flows and architecture end-to-end; performed functional testing and documented business rules.
    Business Analysis Requirements Gathering Functional Specifications Functional Testing Blockchain

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Education

  • Master of Engineering - MEng, Artificial Intelligence
    Jönköping University, Sweden
    2022
    Data Science, machine learning, deep learning, knowledge representation, semantic web and ethics of artificial intelligence,.
  • Master Expert in Information Technology (Bac+5) · Information Technology
    EPITECH Paris
    2023
    Cursus d'ingénierie informatique en cinq ans fondé sur la conduite de projets de bout en bout : du cadrage à la livraison, en équipe. Formation full-stack (développement, architecture, gestion de projet) complétée par une spécialisation en intelligence artificielle et blockchain.

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