About
C-Esium designs and delivers custom internal business software, with artificial intelligence built in from the first version, for SMEs and mid-sized companies in every sector. The client owns its software — code, data and documentation — with no per-user licence and no dependence on a software vendor. C-Esium is a brand of SINEO SAS, a French company founded on 14 April 2025, whose three partners are based near Lyon, France, and serve clients in France and the United Arab Emirates. In the United Arab Emirates, C-Esium projects are contracted and invoiced in AED by SCALEUP FORGE WEB - FZCO.
Your internal software is your system of record, and it belongs to you. AI is the layer of intelligence plugged into it. That is the framework of all our projects.
In many SMEs and mid-sized companies, a single case goes through several tools: business software, spreadsheets, emails, messaging apps, sometimes sticky notes. Each step is a chance for re-keying, waiting or an error — and that is where part of the margin is lost.
Adding AI assistant licences does not solve this: an assistant with no access to the company’s data cannot say where a job stands, or which quotes have been waiting for an answer for more than 15 days. So C-Esium starts from the tool: internal software built around your real processes, which becomes your system of record, then AI plugged into its data — reports written from voice notes, a copilot that answers on the real business, data you can query from Claude or ChatGPT through a read-only, logged MCP connector.
For whom? SMEs and mid-sized companies in every sector — services, industry, construction, health and social care — from about ten to a few hundred employees, whose processes do not fit standard software. A focused project starts from AED 40,000; a complete internal software from AED 200,000 (excluding VAT). Our reference project is in services (Tech-O, a multi-branch water-leak detection network in France), the case study we publish in detail; the same approach applies to construction, industry, and health and social care.
Internal software succeeds when three things hold together: the technology, the client relationship and adoption by the teams. Each has its own lead.
Founder
Leads the method, the assessment and the technical delivery. Background in software engineering and in organising operations in SMEs.
On your project: the assessment, scoping, build and technical delivery. He has also developed other software and mobile apps.
Partner — sales director
Leads sales strategy and client relations. Background in sales management, marketing and contracts in aerospace and in digital and industrial transformation.
On your project: your contact for client relations and commercial follow-up.
Partner — change management
Supports business owners and teams through the roll-out within the organisation. Background as an interim manager, provisional administrator and consultant.
On your project: change management — internal champions, working groups, adoption of the tool by the teams.
Each step produces a concrete deliverable: no six-month tunnel, you see the tool grow. It all starts with a 30-minute call, free and with no commitment. A V1 on a focused scope in 1 to 2 months; a complete software from 6 months to more than a year, delivered in batches.
A half-day workshop, on your site or by video: the real journey of a case, from the incoming call to the invoice, the tools used or abandoned, the friction and the lost margin (re-keying, waiting, errors, reminders).
A document handed over: a map of the current journey, friction quantified in time, the target scope, integrations, a roadmap by phases and a firm quote. You then decide whether or not to launch the project.
Short sprints and a demo every two weeks: mock-ups you see, try and correct, with your feedback gathered in C-Esium Space, the project space.
The rights to the project source code are assigned to you; the code, data and documentation are transferred to you, with a Git repository in your name. A smooth switch-over: your current tools stay in place in parallel, for safety.
Training for every user, support after roll-out, then optional maintenance. C-Esium Space becomes the support channel.
Payment in milestones: kick-off, mock-ups, screen approval, delivery. A focused project starts from AED 40,000 and a complete internal software from AED 200,000, excluding VAT — see the pricing guidelines.
The method in detail, step by stepSoftware that teams work around is useless. Change management is led by Cyrille Fantino, interim manager, provisional administrator and consultant. It starts during the build, not after delivery.
We meet every profile: those who are happy with the current tools, those who work with sticky notes, those who have had enough. Each has their reasons to embrace or resist the change, and the tool has to work for all of them.
It is the right question to ask a team of three partners. If C-Esium disappeared, your software would remain yours, and another developer could take it over. This answer does not rest on a promise, but on what you have in your hands:
The assignment of the rights to the code, with the database and the documentation, is a clause of the contract. What belongs to you, in detail.
For clients in the UAE, by default on AWS in its Middle East (UAE) Region, so the data stays in the country; a European region is possible on request. For clients in France, AWS in a European region or a European host. For health data, the arrangement is defined at scoping.
By default, the hosting account is opened and paid for by C-Esium, then re-invoiced to the client; it can be opened in or transferred to your name at any time, on request. This section is about the software C-Esium delivers to its clients. The host of this website is given in the legal notice.
This information is public: you can check it in the official French business directory before you even call us.
| Item | Information |
|---|---|
| Brand | C-Esium |
| Company | SINEO — French simplified joint-stock company (SAS) with a share capital of €1,000 |
| SIREN | 943 377 945 |
| SIRET (head office) | 943 377 945 00010 |
| Registration | Trade and Companies Register (RCS) Villefranche-Tarare 943 377 945 |
| EU VAT number | FR58943377945 |
| Registered office | 20 rue Ponson Magnin, 69620 Val d'Oingt, France |
| Founded | 14 April 2025 |
| President | Noé Fantino |
| Team | Based near Lyon, France — serving clients in France and the United Arab Emirates |
| Official record | annuaire-entreprises.data.gouv.fr |
In the United Arab Emirates, C-Esium projects are contracted and invoiced in AED by SCALEUP FORGE WEB - FZCO.
| Item | Information |
|---|---|
| Company | SCALEUP FORGE WEB - FZCO |
| Legal form | Free Zone Company (FZCO) |
| Trade licence no. | 70206 |
| Licensing authority | Dubai Integrated Economic Zones Authority (IFZA) |
| Address | IFZA Business Park, Dubai Silicon Oasis (DDP), PO Box 342001, Dubai, United Arab Emirates |
C-Esium is a brand of SINEO SAS. C-Esium (with a hyphen) has no connection with Cesium / CesiumJS, the 3D geospatial platform of Bentley Systems.
Website publisher, host and intellectual property: legal notice.
Noé Fantino (founder, software engineering and organising operations in SMEs), Jean-Philippe Diez (partner, sales director) and Cyrille Fantino (partner, interim manager and change management). The team is based near Lyon, France, and serves clients in France and the United Arab Emirates. C-Esium is a brand of SINEO SAS (France).
The C-Esium team is based near Lyon, France, and serves clients in France and the United Arab Emirates. C-Esium is a brand of SINEO SAS, whose registered office is at 20 rue Ponson Magnin, 69620 Val d'Oingt, France. In the United Arab Emirates, C-Esium projects are contracted and invoiced in AED by SCALEUP FORGE WEB - FZCO. The half-day assessment workshop takes place on your site or by video.
With a 30-minute call, then a half-day assessment workshop — on site or by video — both free for a qualified project: nothing is invoiced before the project starts. During the workshop, we follow the real journey of a case, the tools used and the friction. You then receive a scoping document with the process map, the scope, the integrations, the roadmap and a firm quote.
It would remain yours, and another developer could take it over. The code is in a Git repository in your name, the hosting account can be transferred to your name at any time, the technical and functional documentation is delivered, and the software is written with standard, widely used web technologies (TypeScript, React, Node.js, PostgreSQL) that any web developer can take over. C-Esium can train an in-house developer or a third-party provider, and offers source code escrow with a trusted third party as an option.
You choose. C-Esium offers optional maintenance, as a monthly package. But because you own the code, you can also bring the day-to-day management of the software in-house — with a developer trained by C-Esium — or hand it to another provider.
For clients in the UAE, the software is hosted by default on AWS (Amazon Web Services) in its Middle East (UAE) Region, so the data stays in the country; a European region is possible on request. For clients in France, AWS in a European region is the default, or a European host such as Infomaniak, in Switzerland, if data sovereignty matters. By default, the hosting account is opened and paid for by C-Esium, then re-invoiced; it can be opened in or transferred to your name at any time, on request.
What you get, prices from AED 200,000 (or AED 40,000 for a focused project), timelines and the comparison with an ERP or SaaS.
ReadThe internal software of a multi-branch water-leak detection network: 3,000+ hours saved per year.
ReadHow a read-only MCP connector lets you query your internal software from an AI assistant.
Read30 minutes to understand your organisation, your tools and what an internal software with AI would change for you. No commitment.