PlatformProduct2026
Contalia
Accounting and invoicing software designed to comply with the Spanish Tax Agency's VeriFactu regulation.
The problem
The VeriFactu regulation requires SMEs and freelancers to issue invoices with a specific format and traceability. Existing solutions are expensive or overly complex.
The approach
Built on .NET 10 and Blazor with a domain layer focused on regulatory compliance: invoice chaining, immutable records and compliant export. Persistence in PostgreSQL.
Highlights
- Compliance-oriented data model (chaining and traceability)
- .NET 10 + Blazor stack for a single web codebase
- Focused on SMEs/freelancers: simple outside, rigorous inside
What it shows
That I can build software that meets strict regulation (VeriFactu/AEAT) with rigorous data handling. If your business has rules to comply with, I can turn the regulation into software.
I want something like this
Available soonContact
Next project
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