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Sylvain ChastangSC

Sylvain Chastang

AI Architect Business · 14 years on the ground + Full-Stack

€650/day
-
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sylvain

What distinguishes a good AI tool from a bad one is not the technology. It's the understanding of the business it operates within.

My Background:

12 years leading a construction company — sales, administration, HR, finance, operations. I've experienced all aspects of being a business owner. I know which workflows waste time without anyone daring to say it, which data is critical, and which is useless.

For the past 2 years, I've been developing full-stack AI solutions full-time. Stack: Python, Flask, SQLAlchemy, LLMs (Claude, GPT), conversational agents, RAG, n8n, Docker, VPS.

My Approach — Vertaya:

Under the Vertaya brand, I develop proprietary AI-driven ERPs, custom-designed for a specific company and its business. Not a generic SaaS that's adapted with a few parameters — a system that speaks your language, follows your real workflows, and replaces multiple existing tools with a single assistant.

Typical target: SMEs and mid-sized companies with 50 to 500 employees that have specific processes poorly covered by market solutions.

Proof it works — LUCAS AI:

I built the Vertaya framework by applying it to a concrete case: LUCAS AI, a C-level assistance platform (admin, finance, sales, ops) for the construction industry. Python/Flask architecture, business conversational agents, LLM integrations.

In beta phase with pilot executives.

This is not a demo. This is not a POC. It's a system in production, running a real business.

What I can do for you:

- Design and development of vertical AI agents (not generic chatbots)
- Custom AI-first internal ERP / tools for your business
- Complex process automation (quotes, client follow-up, HR, treasury)
- LLM integration into existing systems (Python, API, n8n, RAG)
- Audit and redesign of poorly conceived AI tools
- Strategic consulting: where to start, what to prioritize, how to avoid common pitfalls
  • English

    Conversational

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Vertaya
    Founder-Director
    CIVIL ENGINEERING
    May 2024 - Today (2 years and 3 months)
    France
    Vertaya designs and develops proprietary AI-driven ERPs, custom-made for SMEs and mid-sized companies (50 to 500 employees) with business needs poorly covered by market solutions.

    • Full-stack Python/Flask architecture (Factory pattern, Blueprints, SQLAlchemy)
    • Design of vertical AI agents and business conversational workflows
    • LLM integration (Claude, GPT) with persistent business context
    • DevOps Stack: Docker, VPS, monitoring, n8n automations
    • Working in tandem with a co-founder (Jérôme) on sales and deployment
    Artificial Intelligence AI Agent Automation Generative AI
  • Lucas AI
    Proprietary Project based on Vertaya Framework
    December 2025 - Today (8 months)
    26000 Valence, France
    Flagship application of the Vertaya framework, applied to the construction sector.
    LUCAS AI is a C-level assistance platform (administrative, financial, sales, operational) for construction tradespeople and SME/VSE executives.

    • Modules: business conversational agents, quote generation, proactive treasury monitoring, HR, CEE, public tenders, AI phone system
    • Active beta phase: recruitment and onboarding of pilot executives in the sector
    • Serves as a technical showcase and testbed for custom Vertaya solutions
  • ISOL O2
    Managing Partner
    May 2012 - December 2023 (11 years and 7 months)
    Managed a projected polyurethane company in the construction sector. Annual turnover ~€1.5 million.

    • Sales, financial, HR, and operational management
    • Direct management of field and administrative teams
    • Complete management of client, supplier, bank, and social organization relations
    • Co-founded Axiance, a sectoral purchasing cooperative (shared PU supplies)

    This experience is the foundation of my AI approach today: I don't develop tools "for managers" — I was that manager for 12 years.
    Team Management Operations Management Budget Management Sales Strategy

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Education

  • DEUG SVST
    Université JOSEPH FOURNIER
    2001

Skill set

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