Lucie Defraiteur
AI Agent Engineer & 3D Graphics Developer
Profile
AI engineer specialized in agentic systems, multi-provider LLM orchestration, and RAG architectures. I build autonomous agents with tool calling, intent classification, and persistent knowledge graph memory (Neo4j). Expertise in hybrid search (vector + BM25), incremental ingestion, and multi-level summarization for infinite context. Also 10 years of experience in real-time 3D with WebGPU/WebGL engines.
Technical Skills
Languages & Frameworks
TypeScript, JavaScript, Python, C++, C#, React, Next.js, Node.js
* AI & Data
LangChain, LangGraph, GLiNER, TEI, Google Gemini, Neo4j, PostgreSQL, pgVector, RAG, Embeddings, Twilio
@ Tools & Platforms
Git, Docker, Vercel, Electron, MCP, Houdini
Professional Experience
Founder & Lead Developer
Jul 2024 - PresentLuciform Research · Lille
Independent software research initiative. Created RagForge (RAG agent framework with Neo4j knowledge graphs), CodeParsers (multi-language tree-sitter parser), XMLParser (fault-tolerant XML parser), and Lucie Agent (LangGraph-based conversational AI with intent classification, tool calling, and Twilio WhatsApp integration). All packages published on npm under @luciformresearch scope.
Fullstack Developer (Freelance)
Oct - Nov 2025Entre Potes · Remote
Feature development for social platform. Header visual fixes, custom react-joyride vendor fork for CSS transform handling, badge components with tooltips, premium subscription modal. React.js, TypeScript
3D/Tools Developer (Freelance)
Feb 2023 - Jan 2024Designhubz · Remote
3D tools and mobile development for AR/VR e-commerce platform. React Native, TypeScript
Babylon.js / WebGL / 3D Expert
Feb 2021 - Feb 2023Verizon / Smartcom / Altersis · Remote
Real-time 3D visualization and WebGL development for enterprise clients. TypeScript, React, Babylon.js, Three.js, GLSL, C++, OpenGL
3D/Tools Developer
Oct 2019 - Nov 2020A2Mac1 - Automotive Benchmarking
3D visualization tools for automotive industry benchmarking platform. TypeScript, Unreal Engine 4, Angular, Three.js, WebGL, C++, GLSL
Game Developer
2015 - 2019Multiple Studios
Flashbreak (2019) - Real-time multiplayer WebGL games for streaming platform with cash prizes. GameBuilt (2018) - Three.js/TypeScript game development. Eden Games (2018) - Unity developer on Gear Club 2 racing game. AddSome (2017-18) - Lead Unity developer for professional 3D/2D applications. Nectar de Code (2015-16) - Lead developer of tower defense game. Unity, Three.js, TypeScript, GLSL, WebGL
42 Paris
2013 - 2015Computer Science
Peer-to-peer coding school founded by Xavier Niel. Notable projects: wolf3D (raycasting engine), RT (raytracer), Corewar (VM + assembler), Lem-in (pathfinding with Dijkstra/A*), 42sh (shell), Zappy. C, Algorithms, System Programming
Source Available Projects
RagForge
@luciformresearch/ragforgeUniversal RAG agent with persistent local brain. Neo4j-powered knowledge graph, MCP server integration, and Electron desktop app.
CodeParsers
@luciformresearch/codeparsersMulti-language code parser (13 languages: TS, Python, C, C++, C#, Go, Rust, etc.) with cross-file dependency graph extraction.
XMLParser
@luciformresearch/xmlparserFault-tolerant XML parser for AI pipelines. Streaming SAX API with namespace support.
Code Samples
Representative snippets from RagForge showing key architectural patterns.
Semantic Brain Search
Autonomous Research Agent
Structured LLM Executor
Incremental Ingestion
Multi-Embedding Batch Processing
Research Agent Report (auto-generated)