Freelancer profile translated to English.
Back to original languageAbout Julien
AI Developer: AI Agent, RAG in production, AI systems orchestration.
Looking for an AI developer who can design and deliver an AI system from start to finish?
20 years of software development experience. I design and develop AI agents, RAG architectures, and automation systems for SMEs, mid-sized companies, and startups – from prototype to production deployment.
AI Agent & Orchestration
- Autonomous AI Agents: multi-step orchestration, tool chaining, decision-making
- Multi-agent systems: coordination, task delegation, supervision
- Business agent construction: customer support, regulatory assistance, document management
- MCP protocols for external tool integration
- Multi-vendor: OpenAI, Anthropic (Claude), Mistral, Gemini
RAG & AI Architecture
- RAG on internal data: embeddings, document databases, knowledge bases
- RAG architecture in production: chunking, reranking, response evaluation
- LLMOps: monitoring, evaluation, cost optimization
- Vector embeddings and vector databases
Business Process Automation
- Workflow automation with AI orchestration
- LLM integration into your internal tools
- Custom scripts and intelligent workflows (n8n, API)
- Extraction, classification, automated generation
My approach: production code, not no-code. Architecture designed for longevity. Focused on concrete ROI.
Recent Projects
- RelanceZen: AI agent for chasing unpaid invoices for construction SMEs / 20 hours saved per month
- Electronic invoice chatbot: RAG on DGFiP regulations / 85% correct and sourced answers
- AI tool for life cycle analysis for environmental engineering firms / production time divided by 4
References: Foodette (V1 → €4M revenue, 8,000 clients), Wiroom (SaaS from scratch), Eveil & Conseil (API + mobile app)
Need an AI developer to design your AI agent, RAG architecture, or orchestrate your business processes? Let's talk.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Consulting Quest
On Malt
AI POC Audit & ScopingCONSULTING AND AUDITSMarch 2026 - March 2026Paris, FranceAudit and scoping of an artificial intelligence POC for a B2B SaaS platform.Analysis of the existing system: platform, data, business processes.Scoping session with the founder to identify high-impact AI use cases.Definition of the functional scope, choice of technical architecture (LLM, API integration, data processing), and delivery of a comprehensive scoping document.Deliverable: technical recommendations and roadmap for POC development. - SOLUOElectronic Invoice AI Chatbot (RAG)CONSULTING AND AUDITSDecember 2025 - Today (6 months)
Electronic invoicing reform support platform - ongoing project
Design and development of a comprehensive guide and an AI chatbot to assist freelancers, VSEs/SMEs, and accountants in the transition to electronic invoicing.AI Chatbot (RAG)- RAG-based chatbot, powered by official reform sources (DGFIP, regulatory texts)
- 85% correct and sourced answer rate in testing phase
- Contextualized answers based on user profile (freelancer, SME, accountant)
Platform & Content- Structured guide covering the entire reform
- Next.js architecture
**Status**: under development, planned go-live 2026. - Eveil & ConseilBusiness Application & REST APIHEALTH AND WELLNESSApril 2024 - December 2024 (8 months)Paris, France
Parental Monitoring Mobile Application - Full-Stack Development
Design and development of a complete business application for a parental monitoring platform.REST API & Back-office- Documented REST API (Scribe) to power the Flutter mobile application
- Laravel Nova back-office for content, user, and subscription management
- Scalable and maintainable architecture
Stripe & Payment Integration- Implementation of recurring subscriptions via Stripe
- Management of webhooks, reminders, and payment lifecycle
Deployment & Coordination- Production deployment with Cloudflare CDN
- Technical coordination with the Flutter mobile developer
- Technical documentation to ensure maintainability
**Results**: mobile application adopted by users, back-office used daily by the team.
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Education
- Master 2 in Management SciencesParis Dauphine2022Formation en gestion d'entreprise, finance, marketing et stratégie. Complétée par 20 ans de formation continue en développement logiciel et intelligence artificielle.