Freelancer profile translated to English.

Description

Backend & AI Engineer

I support teams in building solid, business-value-driven products.

I have worked in various environments:early-stage startup**, **SaaSplatform, smart building solution in a more established structure. This diversity allows me to work on building anMVPas well as improving an existing codebase.

My approach is simple: clarify needs, secure architecture, deliver fast and clean.

MybackendandAIskills are here to solve your roadblocks, automate what needs to be automated, and improve your product's performance.

RAG & intelligent search

Operational RAG (vector DB or SQL) to transform a document base into a reliable response engine.
Graph RAG (Neo4j) to explore causality chains or advanced business relationships.

Agents & business assistants

Specialized agents connected to your internal data: analysis, extraction, generation, decision-making.
Integration of AI agents to meet specific business needs.

Data Pipelines

Multi-format ingestion (PDF, DOCX, images…) with automated extraction/structuring.
AI-oriented to feed RAG, agents, dashboards, or internal workflows.

Infra & backend architecture

NestJS/Python microservices optimized for AI workloads.
Vector databases (Chroma, Qdrant, Supabase, Neo4j)

**Tech Stack**: Node.js, NestJS, Typescript, Vue.Js, Python, LangChain, LangGraph, Mistral, OpenAI, SQL, Redis, Docker, OVH, AWS, Claude Code

Need to lay the groundwork for an MVP or add a relevant AI feature?

Contact meand let's schedule a call, guaranteed response within 24 hours.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Annecy (up to 50km), Lyon (up to 50km), Grenoble (up to 50km), Genève (up to 50km)

Adalith.ai
Fullstack Developer | AI Engineer
CIVIL ENGINEERING
October 2025 - Today (10 months)
Annecy, France
**Mission**:

Development of Adalith.ai's application, dedicated to documentary and contractual analysis in the construction sector. Objective: automate the exploration of document masses, accelerate analysis, and provide immediate understanding of technical, contractual, and operational issues.

**Achievements**:

- Multi-format ingestion pipeline (PDF, scans, images, doc…) with data extraction, normalization, and structuring.
- Implementation of a GraphRAG to model relationships, causalities, and dependencies between documents, events, and project stakeholders.
- Generation of summaries, analyses, and contractual arguments, with traceability to sources.
- Complete backend architecture: asynchronous processing, strict data isolation, document management, OVH object storage, robust orchestrations.
- Complete frontend integration: monitoring of AI processes (progress, states, intermediate results) and display of documents, their extractions, and generated analyses.

**Tech Stack**:

NestJS, LangChain, Neo4j, VueJs, SQLite, Docker, Redis, RabbitMQ, OVH Bucket, MistralAI
Backend Development Artificial Intelligence Retrieval-Augmented Generation (RAG) GraphRAG NestJs
Moment.Green
Fullstack Developer | AI Engineer
ENVIRONMENTAL
January 2025 - April 2025 (3 months)
Paris, France
**Mission**: Design of the MVP for an AI-based GreenTech, designed to simplify and accelerate ESG evaluation of suppliers in purchasing processes.

**Achievements**:
RAG system contextualizing AI responses from internal documents.
ESG Chatbot for querying and exploring provided documents.
Complete management of suppliers, questionnaires, and associated documents.
ESG Dashboard with synthetic indicators.
Automated questionnaire analysis via OpenAI and Mistral, powered by RAG data.

**Tech Stack**: Symfony (API), Python/Flask (AI), VueJs, TailwindCSS, OpenAI, MistralAI, SQLite, ChromaDB
Backend Development Artificial Intelligence RAG Python AI Chatbot
February - Patriarche
Backend Developer
ARCHITECTURE AND URBAN PLANNING
September 2023 - December 2024 (1 year and 3 months)
Aix-les-Bains, France
**Mission**: Creation of an application suite for smart building management, facilitating the optimization of workspaces and the management of home automation equipment.

**Achievements**:
Design and development of 10+ backend services for space, home automation equipment, and user management.
Synchronization of calendars and meeting rooms for 1000+ users via Microsoft API.
User management from multiple authentication sources via Microsoft SSO and Lucca SIRH.
Automation of home automation equipment management (lighting, heating, ventilation).

**Tech Stack**:
Microservices architecture orchestrated by Kubernetes
Backend: Node.js with NestJS
Communication: RabbitMQ, NATS
Databases: MySQL, Redis
AWS Services: Cognito, API Gateway, CloudFront, S3
Tests: Jest, Supertest
Monitoring: New Relic, SonarQube
Node.js NestJs AWS Typescript Microservices

Agatha Frydrych

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Baptiste Duhen

Fullstack developer

4.6

(4)

Amed Hamou

Senior Lead Developer

(2)

Audrey Champion

Web developer

4.3

(3)

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About Arthur

Backend & AI Engineer

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