Senior Terminal QA and Certification Test Engineer

An extraordinarily talented group of individuals work together every day to drive TNS' success, from both professional and personal perspectives.  Come join the excellence!

The Senior Terminal QA & Certification Test Engineer will join a global Quality Assurance team responsible for ensuring the quality, reliability, and production readiness of payment terminal software and terminal-host integrations. The role establishes strong QA engineering practices beyond certification execution by driving structured test planning, reusable regression suites, integration testing, test coverage transparency, and disciplined release gatekeeping. Certification testing across multiple schemes, networks, and acquirers is performed on top of solid functional and regression coverage, not as a substitute for proper QA.

• Define and execute risk-based test strategies for payment terminal software releases
• Develop and maintain reusable regression test suites beyond certification scripts
• Perform integration and end-to-end testing across terminal, host, and gateway components
• Execute and support scheme-based, network-based, and acquirer-specific certification testing
• Analyze logs, traces, and protocol-level data to troubleshoot terminal and integration issues
• Act as a quality gatekeeper by enforcing release readiness criteria and transparent reporting
• Partner with developers to improve terminal software quality, robustness, and testability

• Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience
• 7+ years of QA/testing experience with ownership of complex releases and quality outcomes
• Hands-on experience testing payment terminals from major manufacturers such as Ingenico, Verifone, and PAX, with exposure to other widely deployed POS terminal platforms in the market
• Strong experience validating terminal software and terminal-host integrations across EMV chip, contactless/NFC, mobile wallets, and MSR payment flows
• Experience testing terminals across Linux, Windows, and Android operating systems and connectivity types including LAN, Wi-Fi, cellular/GSM, and Bluetooth
• Proven ability to design structured test plans, build reusable regression suites, and perform integration and end-to-end testing beyond certification scripts
• Strong API, backend, and protocol-level testing skills, including analysis of logs, traces, and request/response data
• Ability to act as a quality gatekeeper by enforcing entry and exit criteria, reviewing test coverage, preventing defect recurrence, and driving higher terminal software code quality in partnership with development teams

• Experience executing and supporting multiple types of terminal certifications, including scheme-based, network-based, and acquirer-specific certifications using externally provided scripts and requirements
• Strong understanding of QA best practices applied to terminal or embedded software, beyond certification-driven testing
• Demonstrated experience building long-term regression strategies to prevent defect recurrence and improve release quality over time
• Experience automating terminal tests using robotic setups, hardware-in-the-loop testing, or other non-traditional automation methodologies to validate physical terminal interactions

If you are passionate about technology, love personal growth and opportunity, come see what TNS is all about!

TNS is an equal opportunity employer. TNS evaluates qualified applicants without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity or expression, protected veteran status, disability/handicap status or any other legally protected characteristic.