Skip to content

DEV Community

Samir Chatwiti

Software Architect & Full-Stack Engineer · Flutter, Laravel, Node.js · Zero-Trust protocols · AI applications · 20+ years engineering experience

Joined on Apr 9, 2026

Jul 31

Costa Rica v4.4: what's inside the 50-digit clave (and why your comprobante gets rejected)

#costarica #einvoicing #api #tax

3 min read

Jul 31

Bolivia's CUF: the invoice control code you can't fake (and how to verify it in one call)

#bolivia #einvoicing #api #tax

3 min read

Jul 31

Nigeria's e-invoicing mandate: the validation layer generic Peppol tools won't give you

#nigeria #einvoicing #api #tax

3 min read

Jul 31

Dominican Republic e-CF: how one tampered byte invalidates your invoice (and how to catch it)

#einvoicing #api #security #tax

3 min read

Jul 31

Why MyInvois rejects your e-invoice — and how to catch it before LHDN does

#malaysia #einvoicing #api #tax

3 min read

Apr 10

Why I’m finally open-sourcing my architectural work after 20 years building private enterprise systems

#hello #architecture #opensource #security

1 min read

Apr 9

Building a Zero-Trust Proof-of-Presence Protocol with Flutter & Supabase

#flutter #dart #security #supabase

7 min read

loading...