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API Integration Engineer - .Net/Python

MBG Corporate Services
Multiple Locations
3 - 7 Years

Posted on: 25/12/2025

Job Description

Description :

Responsibilities :

- API & System Integration

- Design, develop, and maintain REST/SOAP APIs for e-invoicing integrations.

- Ensure seamless connectivity with certified PEPPOL Access Points (APs).

- Integrate ERP systems (SAP, Zoho, Oracle, Microsoft Dynamics, or custom ERPs) with PEPPOL networks.

- PEPPOL & E-Invoicing Compliance

- Implement and manage PEPPOL BIS Billing 3.0 standards.

- Configure and maintain SML/SMP, participant registration, and endpoint discovery.

- Ensure compliance with local and international e-invoicing regulations.

- Security & Protocols

- Set up secure data exchange using AS2 / AS4 protocols.

- Implement encryption, digital signatures, and authentication mechanisms.

- Monitor transactions for errors, failures, and security risks.

- Data Mapping & Validation

- Map ERP invoice fields to PEPPOL-compliant XML schemas.

- Perform invoice validation, transformation, and exception handling.

- Troubleshoot integration and data issues across systems.

- Coordination & Support

- Coordinate with external service providers and PEPPOL authorities for onboarding.

- Provide technical documentation and integration guides.

- Support UAT, go-live, and post-implementation activities.

Required Skills & Qualifications :

- Technical Skills :

- Strong experience in API development and integration.

- Hands-on experience with PEPPOL e-invoicing and Access Point onboarding.

- Proficiency in XML, JSON, REST APIs, and data transformation.

- Experience with AS2/AS4, SML/SMP, and digital certificates.

- Familiarity with ERP systems and financial data flows.

- Tools & Technologies :

- Programming languages: Java, .NET, Python, or similar

- API tools: Postman, Swagger/OpenAPI

- Databases: SQL / NoSQL (basic working knowledge)

Experience :

- 36 years of experience in API integration or e-invoicing projects

- Prior experience with PEPPOL or government e-invoicing platforms is mandatory

Preferred Qualifications :

- Experience with GCC or EU e-invoicing frameworks

- Exposure to cloud platforms (AWS / Azure)

- Knowledge of compliance frameworks and tax invoicing rules


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