Freelancer profile translated to English.

Description

SaaS & AI Integrator Developer, I help startups, freelancers, and SMEs in the design and development of SaaS solutions, business tools, and custom AI features. I handle everything from audit to production, with an approach focused on performance, reliability, and user experience.

Areas of Expertise:

**SaaS & Business Tools**: Development of modern and scalable web applications (Next.js, React, TypeScript, Tailwind CSS), CRM, ERP, internal platforms, dashboards, client portals, and business tools.

**AI Agents & RAG Chatbots**: Assistants connected to your documents (Notion, Drive, PDF, CRM), semantic search, business logic, and reliable responses with sources.

**Generative AI**: Integration of GPT, Claude, Llama, and other LLMs to create assistants, intelligent search engines, content generation, classification, and data extraction.

**Prompt Engineering & AI Architecture**: Design of prompts, workflows, guardrails, tools, and RAG pipelines for stable production results.

**Automations & Integrations**: API connections (CRM, emails, Stripe, calendar, support, ERP...), process automation, and elimination of repetitive tasks.

Services:

**Quick POC / MVP**: Validation of a SaaS product, business tool, or AI use case.

**Complete Solution**: Design, development, deployment, and evolution of SaaS applications integrating AI features.

**Maintenance & Optimization**: Evolutions, new features, performance optimization, and continuous improvement.

Why Work With Me?

I develop robust, scalable SaaS applications and AI solutions designed to meet real business needs. My goal is to create high-performing, user-friendly products that are perfectly integrated into your business to generate concrete gains in time, productivity, and value.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Spanish
Basic

Workplace preferences

Can work on-site

Paris (up to 50km)

Nova Studio
Founder
SOFTWARE PUBLISHING
March 2024 - Today (2 years and 5 months)
Paris, France
I create custom AI solutions for freelancers and SMEs: from RAG AI agents connected to a knowledge base (documents, processes, internal tools) to a complete infrastructure integrating AI, designed for your use cases (AI SaaS, business web apps, dashboards, etc.).

The solutions developed are typically chatbots and AI agents for customer or internal support, RAG systems for intelligently searching and utilizing your documents with sources, AI workflows for sorting and qualifying information (emails, tickets, business data), as well as AI dashboards and tools for steering, reporting, and decision support.

Each solution is custom-designed to fit your business and generate concrete time savings, with a priority on ease of use and reliability in production.
RAG Artificial Intelligence AI Chatbot AI Agent SaaS
Freelance
Freelance - Web Developer
SOFTWARE PUBLISHING
January 2023 - March 2024 (1 year and 2 months)
Paris, France
Design and development of showcase websites and web applications for clients (freelancers / SMEs). Creation of modern, clear, and conversion-oriented interfaces, as well as business dashboards (activity tracking, request management, reporting). Integration of essential features: forms, appointment booking, dedicated areas (login/account), payments if necessary, and deployment of reliable solutions with a focus on performance, security, and maintainability.
Web Development Showcase Website Front-End Development Back-End Development Dashboard

Jean

Programmeur système avec IA - Choisir son futur

Reviewed on 2/7/2026

It's difficult to give a very positive review, it might seem excessive, but I must say that the work and collaboration with Mathieu suited and satisfied me perfectly. Mathieu is very intelligent in understanding the project as a whole and in its details. And there's no need for long explanations for him to program concrete, creative 'features' or details, even beyond my expectations. And all this very quickly, plus being reachable almost 7/7 and from morning to late evening. In short, excellent work, and I wish to continue long-term with Mathieu. I recommend him 100%, you can even contact me to verify this recommendation.

Jacques

DG - C-Clerc

Reviewed on 1/24/2026

Excellent service provider, perfect execution of the mission, excellent communication throughout, and goes above and beyond to exceed expectations! I highly recommend ++.

Show all 3 reviews