Senior Software Development Engineer in Test I

We are seeking a skilled Senior Software Development Engineer in Test (SDET) to help ensure the reliability, security, and performance of the EBizCharge payment gateway and other related payment applications. In this role, you will design and implement automated testing solutions, collaborate closely with engineers, QA, and product teams, and play a critical role in maintaining high-quality standards for financial transaction systems.

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, integrations, and third-party processors.
• Conduct integration, regression, and end-to-end testing across ERP and accounting system integrations.
• Collaborate with software engineers to identify test gaps, reproduce issues, and improve testability.
• Monitor and improve test coverage, reliability, and execution time in CI/CD pipelines.
• Perform performance and load testing to ensure the gateway handles high transaction volumes.
• Participate in code reviews with a quality-first mindset.
• Document test strategies, test cases, and quality metrics.

Qualifications

• 5+ years of experience as an SDET, QA Automation Engineer, or similar role.
• Strong programming skills in one or more languages such as Java, C#, Python, or JavaScript/TypeScript.
• 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).

Preferred Qualifications

• Experience with payment processing, card networks, or merchant services.
• Knowledge of PCI DSS compliance and secure testing practices.
• Experience with ERP or accounting system integrations (NetSuite, Dynamics, Sage, or Oracle etc.).
• Experience with performance testing tools (JMeter, Gatling, k6).
• Familiarity with cloud platforms (AWS, Azure) and containerized environments (Docker, Kubernetes).

What We Offer

• Competitive salary and benefits
• Opportunity to work on mission-critical financial systems
• Collaborative, engineering-driven culture
• Career growth and ownership of quality initiatives
• Flexible work arrangements