Julien Blégean

Web & AI Developer

A fullstack developer for the past 12 years, I now work on AI projects every day: LLM integrations, prompt engineering, RAG systems and AI agents.

Rennes — Parisjulien@guten.dev

Phone

Malt profile(opens in a new window)

Experience

Wisewand.ai — Lead Developer

Dec. 2024 → present

Fullstack development of the platform (Nuxt front-end, TypeScript / Elysia API) and design of the entire AI-assisted content generation pipeline.

  • LLM content generation pipeline driven by user inputs: model integration, prompt engineering, load and cost management, quality control and evaluation.
  • Multi-source information gathering, AI-powered cleaning and structuring.
  • Generation of images, audio and interactive widgets embedded in articles.
  • AI agent wired to a wide range of external tools and APIs.
  • End-to-end automated content planning: sitemap analysis, 30-day plan, writing, publishing to WordPress and Shopify.
  • Automatic front-end form filling from analysed data.
  • RAG implementation across the pipeline and the AI agent.

Freelance web developer

2017 → 2024

A wide range of assignments for agencies, large accounts and startups. Front-end with Nuxt 3 (Vue 3), Tailwind and GSAP; back-end with Express / Prisma or Python (Flask, Django). A few Data Science and Machine Learning assignments.

Selected projects

2023 – 2024
  • Wow DigitalGSAP, Alpine.js, Tailwind
    Front-end development across several projects.
  • 2EmotionGSAP
    Animation components and transitions for a video editor.
  • ESD ParisTraining
    One-week training course on GSAP.
  • Centrale Des SCPINuxt, Tailwind, GSAP
    Development of the client portal for real estate investments.
  • Orchestre de ParisNuxt, Tailwind
    Music education web app, built end to end as a PWA.
  • StoresDiscountNode.js, EJS
    Template engine and front-end for 60+ product pages.
  • SmartFencerVue, Tailwind, Firebase
    Sports analytics web app for fencers.
  • FoldingCycleDbNuxt, Tailwind
    Folding bike comparison website.
  • Agence LumyNuxt, Tailwind, Directus
    Front-end for a Breton radio streaming platform.
  • ElokenPHP, Bootstrap
    Real estate auction page.

Notable clients — Saint-Gobain, Orange, Lagardère, Medici.tv, École Supérieure du Digital Paris, Upfeel, Wow-Digital, StoresDiscount.

École Supérieure du Digital — Lecturer

2020 → 2025

Web development courses and project weeks for first, second and third year Bachelor students. From 2023 to 2025, created and led the Web Development Bachelor programme: curriculum design, module breakdown, hiring and coordinating lecturers.

Skills

  • Applied AI

    LLM integration (Claude, Gemini, ChatGPT), prompt engineering, tool calling, agents, RAG & embeddings, image generation and editing.

  • Use cases

    Data classification, anomaly detection, information extraction, content generation, reliability evaluation, cost and performance monitoring.

  • Front-end

    Nuxt 3, Vue 3, TypeScript, Tailwind, GSAP, Alpine.js, PWA.

  • Back-end & AI

    TypeScript (Hono, Elysia, Express), Node, Prisma, Python (Flask, Django), PostgreSQL / Supabase, Firebase.


Education

  • TELECOM Nancy (2015) — engineering degree, majoring in Data Science & Machine Learning.
  • Aalto University (Finland, 2015) — exchange programme, Data Science & Machine Learning.

Languages

  • French — native
  • English — fluent, written and spoken
  • Finnish — currently learning