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Julien MarsJM

Julien Mars

Full-Stack Web Developer | AI Expert | LLM | RAG

€500/day
Lille, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • SuperHote
    SuperHote - AI Developer
    TRAVEL AND TOURISM
    January 2026 - February 2026 (1 month)
    Lille, France
    Development of an AI Agent System
    +5 AI Agents (Orchestrator, Recommendation Specialist, Review Specialist, Search Specialist, and Q&A Specialist)
    Hosting on AWS Bedrock, S3, etc.
    Creation of a RAG system (+500 documents)
    Configuration of AI Agents to optimize responses and knowledge
    Creation of API calls in the back-end for AI Agents to interact directly on the site (respond to reviews, etc.)
    Artificial Intelligence AI Chatbot AI Agents AI Agent Design and Deployment Architecture
  • JUWA
    JUWA — Back-End Developer
    CONSULTING AND AUDITS
    September 2024 - January 2025 (4 months)
    Lille, France
    Development of a Payment Module
    Automatic Billing System
    Task Prioritization
    Deployment Management
    Back-end Ticket Management
    Continuous Back-end Improvements (Optimization, Security, etc.)
    Automatic Notification System (Emails, SMS, Push)
    Billing and Payment Tracking Deployment IT Security SEO GEO
  • JUWA
    JUWA — Back-End Developer
    CONSULTING AND AUDITS
    January 2025 - February 2025 (1 month)
    Lille, France
    Finalization of the payment module
    Implementation of new billing systems
    Implementation of a new payment logic (Recurring)
    Billing and Payment Tracking IT Security Deployment Project Management NestJs

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Education

  • Software Engineering Expert Degree + RNCP Title (Bac +5 Master 2)
    EPITECH
    Niveau : Diplôme Expert en Ingénierie Logicielle + Titre RNCP (Bac +5 Master 2) L'ECOLE DE L'EXCELLENCE INFORMATIQUE. Epitech, créée en 1999, est l’école supérieure d’informatique de référence. Elle forme en 5 ans après-bac des experts reconnus et recherchés par les entreprises. Elle propose un modèle pédagogique résolument innovant, organisé par projets et par parcours. Aucun prof uniquement des projets a réalisé en autonomie, cahier des charges, deadline, follow-up, etc.
  • Baccalaureate
    Lycée Ozanam
    2023
    Baccalauréat

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