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ZATCA E-Invoicing Platform

MEAN StackUBL 2.1PKI / OAuth 2.0

A ZATCA-compliant e-invoicing platform enabling secure invoice generation, validation, and real-time integration with government systems, adhering to UBL 2.1 and EN 16931 standards.

XML & XSD Compliance

Structured UBL 2.1 invoice generation with schema validation and PDF/A-3 embedding.

Cryptographic Security

Digital signatures, PKI certificate authentication, and hash chaining for invoice integrity.

Real-Time Integration

End-to-end clearance and reporting workflows via ZATCA government APIs.

Key Contributions

  • â–¹Implemented structured invoice generation in XML format based on UBL 2.1 and EN 16931 standards.
  • â–¹Developed XML schema (XSD) validation to ensure full compliance with ZATCA requirements.
  • â–¹Integrated PDF/A-3 generation with embedded XML for human-readable invoice representation.
  • â–¹Implemented cryptographic stamping using digital signatures for invoice authenticity.
  • â–¹Developed a hash chaining mechanism to maintain invoice sequence integrity.
  • â–¹Generated UUIDs for unique invoice identification and tracking across the platform.
  • â–¹Integrated Public Key Infrastructure (PKI) for secure certificate-based authentication.
  • â–¹Built end-to-end workflow for invoice clearance and reporting with ZATCA APIs.
  • â–¹Designed robust error handling and validation layers for compliance and audit readiness.
  • â–¹Optimized backend services for high-volume, real-time invoice processing at scale.
ZATCA Phase 2 Compliant
Fully compliant with Saudi Arabia's e-invoicing mandate — supports both Simplified and Standard invoice types with real-time clearance and reporting modes.