Freelancer profile translated to English.

Description

I am a self-employed Full-Stack AI Engineer specializing in the design of complex AI systems and modern backend architectures.

Core Expertise:

• AI Agents: LangGraph, multi-agents, intelligent orchestration, advanced workflows

• RAG & Pipelines: Retrieval-augmented systems and sophisticated data pipelines

• Backend: Node.js / Express, BullMQ, Redis, JWT, Websockets, rate limiting

• Mobile: React Native + Expo SDK (real-time applications, push notifications)

• Infrastructure: PostgreSQL, Qdrant, Docker, GitHub Actions, asynchronous workers

I perform very well autonomously with a clear specification: I deliver clean, well-documented, maintainable, and scalable code, with regular updates.

I prefer written and asynchronous communication (Slack, email, Notion). Evaluation is primarily based on the quality of code and deliverables.

Available immediately for full remote.

Find my detailed architectures on my GitHub:

mike-dyson / ai-engineering-portfolio

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

MiroCert
Founder & Lead Developer
SOFTWARE PUBLISHING
March 2026 - Today (5 months)
Paris, France
Development of a large-scale prospective simulation engine to anticipate the reactions of thousands of citizens calibrated on INSEE data.

Design of complex profile orchestration, generation of dynamic mappings (coalitions, resistances, tipping points), and production of PDF reports.
Focus on robust architecture, data pipelines, and system reliability.
Workflow Orchestration Data Pipelines Python Simulation Data Analytics
SERENE Fintech
Founder & Full-Stack Developer
SOFTWARE PUBLISHING
April 2025 - Today (1 year and 4 months)
Paris, France
Development of a wealth intelligence iOS application offering personalized financial briefs each morning.

Design of a full-stack architecture combining Python pipelines (LangGraph, RAG, multi-agents), Node.js backend, and React Native / Expo SDK mobile application.
Stack: Python, LangGraph, Node.js, Express, PostgreSQL, Redis, Render.
LangGraph Python React Native Node.js RAG
Rap Oracle (Projet indépendant)
Full-Stack Developer
SOFTWARE PUBLISHING
February 2025 - Today (1 year and 6 months)
Paris, France
Design and development of a complete backend architecture for an economic system and core engine.

Implementation of asynchronous queues (BullMQ), workers, crons, websockets, rate limiting, and middlewares.
React Native / Expo SDK 54 mobile application with real-time services.
Well-documented modular architecture with a focus on scalability and performance.
BullMQ Node.js React Native Backend Architecture Websockets

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Guillaume De Maria

Full-Stack AI Engineer (LangGraph & RAG)

About Guillaume

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