Senior SDET - API & Payment Gateway Automation (Remote)

EBizCharge; Irvine (CA); Hybrid; USD 120,000 - 170,000; Full time

Job summary

EBizCharge, headquartered in Irvine, CA, is seeking a Senior SDET to ensure the reliability, security, and performance of our payment gateway and related applications. You will design automated tests for APIs, backend services, and web applications and collaborate closely with engineers, QA, and product teams to maintain high-quality standards for financial transaction systems.

You will develop and maintain automated test frameworks, validate PCI-compliant workflows, perform API testing, and

Qualifications

• 5+ years of experience as an SDET, QA Automation Engineer, or similar role.
• Experience building test automation for APIs and backend systems.
• Hands-on experience with test frameworks such as Selenium, Playwright, Cypress, RestAssured, Postman, or similar.
• Solid understanding of CI/CD pipelines (GitHub Actions, Jenkins, Azure DevOps, etc.).
• Experience testing financial systems or payment gateways.
• Strong knowledge of SQL and database validation.
• Familiarity with version control systems (Git).

Responsibilities

• Design, develop, and maintain automated test frameworks for APIs, backend services, and web applications related to the EBizCharge payment gateway.
• Write and execute automated tests for payment flows including authorization, capture, refunds, voids, tokenization, and recurring payments.
• Validate PCI-compliant workflows and ensure secure handling of sensitive payment data.
• Perform API testing (REST/SOAP) for gateway services and third-party integrations.
• Conduct integration, regression, and end-to-end testing across ERP/accounting system integrations.
• Collaborate with engineers to identify test gaps and improve testability.
• Monitor and improve test coverage, reliability, and CI/CD execution time.
• Perform performance and load testing to handle high transaction volumes.
• Participate in code reviews and document test strategies and metrics.

Skills

SDET experience

API test automation

CI/CD workflows

SQL & DB validation

Test frameworks

Financial systems testing

Git & version control

Tools

Selenium

Playwright

Cypress

RestAssured

Postman

GitHub Actions

Jenkins

Azure DevOps

Job description

EBizCharge, headquartered in Irvine, CA, is seeking a Senior SDET to ensure the reliability, security, and performance of our payment gateway and related applications. You will design automated tests for APIs, backend services, and web applications and collaborate closely with engineers, QA, and product teams to maintain high-quality standards for financial transaction systems.

You will develop and maintain automated test frameworks, validate PCI-compliant workflows, perform API testing, and