PEPPOL/E-Invoicing Specialist for Fawtara Platform

PEPPOL / E-Invoicing Specialist — Access Point & PINT-OM (Oman Fawtara)

We are building an OTA-accredited e-invoicing platform for Oman's national Fawtara mandate, based on the PEPPOL five-corner model. We need an experienced PEPPOL / e-invoicing specialist to lead the interoperability layer through to a successful Oman Tax Authority (OTA) sandbox conformance pass. Target sandbox pass mid-July 2026; hard go-live 25 July 2026.

Scope of work:
• Configure or integrate a PEPPOL Access Point and AS4 (eDelivery) messaging endpoint
• Implement Service Metadata Publisher / Locator lookup against Oman's centralised SMP model
• Build and validate UBL 2.1 / EN 16931 document mapping and the PINT-OM (Oman) profile, including Schematron validation
• Manage certificates / PKI and prepare OpenPeppol Access Point certification evidence
• Drive OTA sandbox testing and iterative conformance fixes through to a clean pass

Required experience:
• Demonstrable PEPPOL Access Point work — you have certified or operated an AP on a live network
• Hands-on AS4 / eDelivery, SMP/SML lookup, UBL, EN 16931, and at least one national PINT profile
• Schematron validation and certificate / PKI handling
• Open-source stacks (Oxalis / Phase4) and/or commercial Access Point integration

To be considered, please answer these in your bid (bids that skip them will be ignored):
1. Which PEPPOL networks have you certified or operated an Access Point on, and when?
2. Briefly explain the five-corner model and where the SMP sits.
3. What changes between EN 16931 and a national PINT profile?
4. Have you worked with a centralised SMP, as several tax authorities now operate?

Engagement: contract / fractional, immediate start, paced to a mid-July sandbox pass. We will begin with a small paid scoping task before the full engagement. Please share relevant references or certification evidence. Show More