Integration Specialist

Client of 6 Pence

Duties & Responsibilities:

• Integrate ECR systems with payment terminals using DLLs/SDKs and shared libraries.
• Build and maintain .NET, Java, and C++ client libraries for payment flows (Sale, Void, Refund, Settlement).
• Implement semi-integrated and direct integration models; support OPOS/JPOS APIs where applicable.
• Create wrappers (e.g., C# P/Invoke for C DLLs; JNI for native libs in Java).
• Implement and test transaction flows (Authorization, Capture, Reversal, Settlement) using ISO 8583.
• Integrate MPGS and Cybersource APIs (REST, SOAP where relevant) and perform end-to-end testing.
• Build secure payment features in Android (Kotlin/Java) and/or iOS (Swift).
• Set up CI/CD pipelines, unit/integration tests, and secure coding checks.
• Design and implement database layer, Forms, Reports , Dashboards using MSSQL for centralized storage and MS Access MS Excel for all Acquiring Products, Merchants, stocks and operations.

strong>Qualifications & Experience:/strong>

• Bachelor's degree in Software Engineering.
• Minimum 2 3 years Experience IT engineering and software development.
• Strong ethical standards and secure coding practices.
• Hands-on ECR/DLL and POS integration experience; ISO 8583 knowledge.
• Expertise in MPGS and Cybersource integration; 3DS, tokenization.
• Proficiency in .NET/C#/Visual Studio, Java (JNI/JNA), and C/C++.
• Experience with mobile development (Android/iOS) for payment flows.
• Knowledge of PCI DSS compliance and secure coding practices.