Julien Lucas

I develop high-value tasks and systems for your business. My profile bridges engineering, product, AI engineering, and business acumen.

Certified in AI Agents/RAG by IBM and in Deep Learning by DeepLearning.AI, I am also a full-stack developer with five years of experience in startups, scale-ups, and large corporations (notably at iziwork, CORUM l'Épargne, Sewan Telecom, Reezocar, and Smartch).

Development

✔ React Frontend, Python backend, and APIs (FastAPI/Nest/Next)

✔ Expert in clean software architecture (former trainer)

RAG (Retrieval-Augmented Generation)

✔ High-relevance RAG with re-ranking and rigorous evaluation (Recall, MRR)

AI Agents

✔ Creation of AI agents capable of executing complex tasks (LangGraph, LlamaIndex, or CrewAI)

✔ Mastery of model costs and model selection (preference for Claude/Mistral)

Infrastructure

✔ Management of traditional and vector databases (ChromaDB, Pinecone, Milvus)

Machine Learning

✔ Fine-tuning of custom models through deep learning in computer vision and NLP (PyTorch, HuggingFace)

✔ Classification, scoring, and recommendations

✔ Pruning and quantization for smaller custom models with 2-3x faster optimized inference (ONNX/PyTorch)

• Over 7 years of development experience

• Background in demanding startup/scale-up environments

• Dual expertise in Development + AI

• Trained 40 developers in clean software architecture (formation-cleanarchitecture.com)

• Business-oriented approach

• Built real AI products in production (prospable.com, closechat.co, shootingpro.co)

• 11,000+ developer + AI followers on youtube.com/julienlucas

Feel free to contact me if you are looking for a senior profile capable of quickly transforming your needs into technical solutions.