Software Engineer II - Card Not Present

Headquartered in Irvine, California, EBizCharge specializes in developing integrated payment solutions that facilitate electronic payment processing within ERP, CRM, Mobile, and eCommerce applications. Our applications are PCI compliant and fully integrated with major ERP/accounting systems, including QuickBooks, Sage, SAP Business One, Microsoft Dynamics, NetSuite, Epicor, Acumatica, and major online shopping carts, including Magento and WooCommerce. EBizCharge offers its employees tremendous learning opportunities, career growth potential, and a dynamic work environment.

We are seeking a Software Engineer II to join our growing team. This role is focused on building and supporting secure payment solutions across EMV terminals, backend services, and integrations. The ideal candidate has experience working on payment systems or processor integrations and is interested in deepening their expertise in EMV certification, tokenization, and end-to-end transaction flows. This engineer will collaborate closely with senior team members to deliver reliable, compliant, and scalable payment solutions.

Responsibilities

EMV Terminal & Device Development

Develop and maintain Ingenico terminal applications using Kotlin and Ingenico SDK

Implement EMV transaction flows (contact, contactless, NFC, wallet)

Integrate terminal software with host systems and gateway APIs

Troubleshoot device-level issues, EMV kernel interactions, and transaction failures

Assist with firmware updates and terminal configuration management

Backend Payment Services (.NET)

Contribute to the development of secure RESTful APIs using .NET/ASPE.NET core

Implement core payment workflows: authorization, capture, refund, void, and settlement

Support integrations with payment processors and gateways

Build and maintain device management services (registration, monitoring, configuration)

Implement webhook listeners and event-driven payment updates

Support batch settlement, reconciliation, and reporting processes

Participate in production troubleshooting and reliability improvements

EMV Certification & Processor Integration

Contribute to EMV Level 3 certification efforts by executing test cases and validating transaction flows

Assist in validating host message formatting and transaction responses

Troubleshoot processor-level declines and edge cases with guidance from senior engineers

Support regression testing and re-certification activities

Collaborate with internal teams and external processors during certification cycles

Tokenization & Wallet Integration

Support implementation of network tokenization flows (Visa, Mastercard, Amex)

Assist with token lifecycle management (provisioning, updates, de-tokenization)

Support integrations for Apple Pay and Google Pay

Ensure payment flows adhere to card network and security requirements

Mobile Payment Integration

Support Android-based mobile payment integrations using Kotlin

Integrate payment SDKs and troubleshoot mobile transaction issues

Assist with mobile wallet provisioning and transaction flows

Qualifications

2-4 years of professional software development experience

Experience working on 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

Ability to work collaboratively in cross-functional teams

Preferred Qualifications

Exposure to EMV Level 3 certification processes

Experience integrating with payment processors or gateways

Experience with Ingenico devices and SDKs

Familiarity with PCI-DSS compliance concepts

•Experience with AWS or Azure

Experience with CI/CD pipelines and automated deployments

Prior fintech or payment industry experience

Technical Environment

•Terminal Software: Ingenico SDK, Kotlin

•Backend: .NET 6+ / ASP.NET Core

Mobile: Android SDK integration (Kotlin)

•Cloud: AWS or Azure

Payments: EMV, Tokenization, Webhooks, Batch Settlement

Growth Opportunity

This role provides hands-on experience with EMV Level 3 certification, processor integrations, and tokenized payment systems, offering a strong growth path toward senior payments engineering roles.

Job Type: Full-time

The Company is committed to compliance with all applicable laws providing equal employment opportunities. This commitment applies to all persons involved in Company operations. The Company prohibits unlawful discrimination against any job applicant, employee, or unpaid intern by any employee of the Company, including supervisors and coworkers. Pay discrimination between employees of the opposite sex or between employees of another race or ethnicity performing substantially similar work, as defined by the California Fair Pay Act and federal law, is prohibited.

Originally posted on Himalayas