Custom development, AI and Peppol e-invoicing
Do your processes rely on spreadsheets, on re-entering data between two programs, or on tools that do not talk to each other?
Sia-OS builds tools for your processes, with AI where it helps.
Custom software development
Applications, internal tools, connectors between your software: Sia-OS develops the tools your processes need, with their documentation.
Ownership of the code is decided before work starts, in the quote. There are two options:
- the code and its documentation are transferred to you;
- Sia-OS retains the intellectual property and grants you a right of use.
The price depends on the option chosen.
AI integration
Sia-OS integrates language models where they help, with attention to the data sent to them. What information leaves your company, and to whom?
Where relevant, the models are hosted on your premises.
Peppol e-invoicing
Peppol e-invoicing has been mandatory between VAT-registered Belgian businesses since 1 January 2026. Is your current invoicing tool ready for it?
Sia-OS integrates Peppol e-invoicing into your invoicing tools.
Method
Scoping
Understand the need, the context and the constraints.
Quote
Scope, timescales, price and, for development work, the code ownership option. Nothing starts without your agreement.
Delivery
In stages, with regular check-ins and the documentation.
Follow-up
Fixes, enhancements or maintenance, as agreed.
Other services
Let's talk about your project
A project or a question: a few lines are enough, with the need, the context and a deadline if you have one.
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