Payments Engineer II: EMV, Tokenization & API Expert

Jobless; Northern (KY); Hybrid; USD 90,000 - 130,000; Full time

Job summary

EBizCharge in Irvine, California, seeks a Software Engineer II to advance secure payment solutions across EMV terminals, backend services, and integrations. You will collaborate with senior engineers to deliver reliable, compliant payment systems and deepen expertise in EMV certification, tokenization, and end-to-end transaction flows.

Core work includes EMV terminal development with Kotlin and Ingenico SDK, .NET backend APIs, and processor integration, plus tokenization, wallet interfaces, and

Qualifications

• 2-4 years of professional software development experience.
• Experience with payment systems, financial systems, or API integrations.
• Experience building RESTful APIs using .NET / ASP.NET Core.
• Experience developing Android applications using Kotlin.
• Understanding of the payment transaction lifecycle (authorization through settlement).
• Strong debugging and problem-solving skills in production environments.

Responsibilities

• EMV Terminal & Device Development: Develop and maintain terminal applications using Kotlin and Ingenico SDK.
• Backend Payment Services (.NET): Develop secure RESTful APIs with .NET/ASP.NET Core and payment workflows.
• EMV Certification & Processor Integration: Conduct EMV Level 3 test cycles and assist with host message validation.
• Tokenization & Wallet Integration: Support network tokenization flows and wallet integrations (Apple Pay, etc.).
• Mobile Payment Integration: Support Android-based mobile payment integrations and SDKs.
• Production reliability: Participate in production troubleshooting and improvements.

Skills

Kotlin

Android

RESTful APIs

Payment systems

Tools

Ingenico SDK

Kotlin

NET Core

ASP.NET Core

Android SDK

AWS

Azure

PCI-DSS

Job description

EBizCharge in Irvine, California, seeks a Software Engineer II to advance secure payment solutions across EMV terminals, backend services, and integrations. You will collaborate with senior engineers to deliver reliable, compliant payment systems and deepen expertise in EMV certification, tokenization, and end-to-end transaction flows.

Core work includes EMV terminal development with Kotlin and Ingenico SDK, .NET backend APIs, and processor integration, plus tokenization, wallet interfaces, and