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Champion

Raphaël Semeteys

Worldline

I am a technologist and Content Producer with over 25 years of experience across software engineering, open-source communities, and emerging tech. My current focus is on the frontiers of Generative AI, specifically local LLMs, image generation (Stable Diffusion), and Agentic AI.

Throughout my career, I’ve balanced technical leadership with a passion for knowledge sharing. I created the QSOS method for open source evaluation and recently explored the intersection of "vibe-coding" and storytelling by publishing AI-assisted techno-thrillers.

A frequent speaker at international conferences like Devoxx, Open Source Experience, and various DevFests, I enjoy deconstructing complex ecosystems—from Web3 architecture to multimodal AI—into clear, actionable insights. I also bring a unique perspective to tech by integrating holistic yoga practices into my approach to innovation and engineering.

More about me: https://raphiki.github.io/

Badges 8

Talks 9

  1. Devoxx Belgium 2026

    From Developer to Story Builder: Engineering a Novel, an ARG, and a Transmedia World with AI

    October 2026Mind the Geek

  2. Devoxx Belgium 2026

    Surviving the "AI Slopageddon": How AI shakes the foundations of Open Source

    October 2026Development Practices

  3. Devoxx Belgium 2025

    The Yoga of Image Generation with Stable Diffusion & ComfyUI

    October 2025GenAI & Beyond

  4. Devoxx Belgium 2025

    From OpenAI to Opensource AI: Navigating Between Commercial Ownership and Collaborative Openness

    October 2025GenAI & Beyond

  5. Devoxx Poland 2025

    Mastering Image Generation with Stable Diffusion

    June 2025Data & AI

  6. Devoxx France 2025

    D'OpenAI à Opensource AI: entre propriété commerciale et ouverture collaborative

    April 2025Data & AI

  7. Devoxx France 2025

    Génération d'images locale et contrôlée avec Stable Diffusion et ComfyUI

    April 2025Data & AI

  8. Devoxx Morocco 2024

    The Future Beyond LLMs: Exploring Agentic AI

    October 2024Data & AI

  9. VoxxedDays Brussels

    The hitchhiker's guide to software architecture and design

    May 2023People, Culture & Methodology