Built with Claude and Claude Code

AI software factory · France

We build the AI software French SMEs run on.

Agents, automations and custom apps for small and mid-sized businesses. Claude Code agents write the software, our software factory verifies it, and our team and a network of 480+ trained builders deploy it inside real companies.

Clément GeynetEnzo DonatiClément Geynet & Enzo DonatiCofounders. HEC Paris and CentraleSupélec.
See the software factory What runs in production
  • €1M+revenue generated with ZénithIA
  • 550+customers served since 2024
  • 480+builders in our integrator network
  • 50+AI systems in our delivery playbook

Trusted by teams at large companies and SMEs

  • LHH
  • Crédit Agricole Assurances
  • SNCF Réseau
  • Datawords
  • Brevo
  • Alten
  • Ofi Invest
  • ProfExpress
  • Mindeo
  • Relais de Barbezieux
  • Communauté de communes Caux Austreberthe
  • G-Ops
  • Oxyvie
  • LayerTech
  • Rheatis
  • Ascenscio
  • Sygma
  • Du Pain Pour Demain
  • ExpoStand & Cie
CentraleSupélec

Official partner of CentraleSupélec
One of France's leading engineering schools.

The software factory

Agents write the code and our factory makes it safe to ship.

Writing software is no longer the bottleneck for an SME project. Verifying it is. We are building a delivery chain where Claude Code agents do the writing and an automated pipeline decides what can merge, so custom software costs what a small business can afford.

  1. 01

    Issue

    Every change starts as a written ticket, with the business rule it serves.

    GitHub Issues
  2. 02

    Agents write

    Claude Code agents implement it, following shared rules plus the app's own rules.

    Claude Code
  3. 03

    Checks run

    One check command per repo runs tests, types and linters. Deploys wait for green CI.

    check · CI
  4. 04

    Risk is scored

    Each pull request is sorted by reversibility and by whether it touches a critical domain.

    door × criticality
  5. 05

    Staging

    The change runs on a copy of production before anyone relies on it.

    staging
  6. 06

    Humans decide

    Engineers spend review time only where the risk is real, then ship.

    review · ship

ITwo layers of rules

One standard, one page per app

Global rules live in the factory repository. Each app adds its own layer, even when it is empty, so every agent knows the house rules and the local ones.

IIReview by risk

Not every change deserves the same attention

A one-way change on payments gets a human. A reversible fix on a dashboard can go through on green checks. Attention goes where mistakes are expensive.

IIIBuilt to be reused

Our apps are the pilot, client software is next

The chain runs on our internal apps first. The same charter then becomes mandatory for every piece of software we, and our network, deliver to clients.

The question is no longer who writes the code. It is who can prove it works.

In production

Our own company runs on software built this way.

Before a pattern goes to clients, it runs our operations. Two examples from our internal stack, both written with Claude Code and live today.

Acquisition platform · Live since July 2026

ZénithAds

An AI setter answers people who click our Meta ads, qualifies them in Instagram, Messenger and WhatsApp DMs, books a call with a human closer and ties every sale back to the ad that started it.

  • First-party attribution per creative, even when Meta withholds the ad ID.
  • Model chosen per prompt, prompt caching on long system prompts, every call logged for cost and latency.
  • Campaigns created by API, always paused until a human activates them.
418
Commits in 2 months
38
Database tables
3
Messaging channels

Finance back-office · Live since April 2026

factu

Our invoicing and reconciliation cockpit. It pulls every payment from Mollie, Qonto and PayPal, matches it to a customer and an invoice, drafts what is missing and pushes sales to our CRM.

  • Every payment reconciled, including split payments and closer commissions.
  • One container, FastAPI and React, on our own EU server.
  • Driven by agents, with an API documented for them.

What we deliver

Systems that run every day inside client companies.

From a single workflow to a full internal app, we audit the process, design the system, deploy it on EU infrastructure and keep it running.

AI agents

Agents that talk to customers and take the repetitive part of the job, with a human always able to step in.

WhatsApp settersRAG assistantsVoice receptionists

Automations

Workflows that connect the tools a business already pays for and remove hours of manual work each week.

CRM and leadsInvoicesScreening

Custom software

Internal apps built around how the client works, instead of bending the process to a generic tool.

Back-officesDashboardsAPIs

Deployment and training

Self-hosted in the EU, secured, documented and handed over to teams who know how to use it.

EU hostingGDPRTeam training
Clément Geynet and Enzo Donati presenting an automation workflow to a client team
Workflow review with a client team
Clément Geynet and Enzo Donati presenting the solution and expected gains to a client's management
Solution and gains presented to management

Integrator network · 480+ builders

Our network already sells AI systems to French SMEs.

Our ecosystem trains freelancers, consultants and entrepreneurs to build and sell AI systems on the same playbook we use. These are original posts from our private community, in French. Click one to read it.

A selection from 50+ testimonials posted by members.

A shared playbook100+ hours of training across 13+ modules, from agents and automations to hosting, security and pricing.
A mission boardMembers pass client work to each other, with no commission taken on introductions.
Direct supportWeekly group coaching with the founders and answers within 24 to 48 hours.

Teaching

We teach AI and automation in France's top schools.

  • Clément Geynet on stage at TEDx
    TEDx · Clément
  • Lecture at ESSEC with an n8n workflow on screen
    ESSEC
  • Clément Geynet and Enzo Donati on stage at TEDx
    TEDx · Clément and Enzo
  • Lecture hall at IAE Paris-Est during a workflow presentation
    IAE Paris-Est
  • Students on laptops during a hands-on workshop
    Hands-on workshop
  • Group photo at the Genius × ZénithIA event
    Genius × ZénithIA

Sorbonne · HEC Paris · ESSEC · CentraleSupélec · IAE · Université Catholique de Lille
Two TEDx talks, in Lyon and Paris, one given together and one by Clément.

Founders

Two founders who still answer the hard questions.

Portrait of Clément Geynet

Clément Geynet

CEO and cofounder

Strategy · Offer · Sales

Speaker at the Sorbonne, HEC Paris and ESSEC. Clément turns what we can build into offers companies buy, and leads sales and the community.

Portrait of Enzo Donati

Enzo Donati

CTO and cofounder

Architecture · Agents · Deployment

CentraleSupélec engineer. Enzo designs the systems the agency ships, the agent stack behind them and the software factory that verifies them.

Where we are going

A network that delivers custom software to every French SME.

We already have the customers, the builders and the method. Next we connect them: SMEs bring a process, trained integrators take the mission, and the software factory makes sure what ships is reliable.

Today

€1M+ revenue, 550+ customers, 480+ builders, AI systems in production.

Now building

The software factory, piloted on our own apps.

Next

A marketplace where SMEs get AI-built software from certified integrators.

zenithia.pro