An extraordinarily talented group of individuals work together every day to drive TNS' success, from both professional and personal perspectives. Come join the excellence!
OverviewThe Software Applications area is responsible for the development of computer programming applications including the design, coding, testing and deployment of products and solutions to meet firm obligations.ResponsibilitiesIntroductory SummaryThe 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.
A Day in the Life- 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.
Skills Required
- 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
- Strong experience validating terminal software and terminal-host integrations across payment flows
- Experience testing terminals across Linux, Windows, and Android operating systems
- Proven ability to design structured test plans and build reusable regression suites
- Strong API, backend, and protocol-level testing skills
Transaction Network Services Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Transaction Network Services and has not been reviewed or approved by Transaction Network Services.
-
Leave & Time Off Breadth — Time off is considered a relative strength, with excellent PTO highlighted and increases after five years. Flexibility around taking time away from work supports a better overall balance for many roles.
-
Flexible Benefits — Remote work options and flexibility are frequently highlighted alongside compensation and benefits, improving work-life fit for some teams. This flexibility helps offset more mixed views on other elements of the package.
-
Healthcare Strength — Core medical, dental, and vision coverage are in place and are described as solid or subsidized in some contexts. Benefits are presented as competitive, reinforcing a stable baseline of health coverage.
Transaction Network Services Insights
What We Do
Transaction Network Services (TNS) is a leading global provider of data communications and interoperability solutions. Our global network and innovative value-added services enable transactions and the exchange of information to many of the world’s leading retailers, banks, payment processors, financial institutions and telecommunication firms. Founded in 1990 in the United States, TNS has grown steadily and now provides services to customers in over 60 countries across the Americas, Europe and the Asia Pacific region, with our reach extending to many more. TNS has designed and implemented a global data network which supports a variety of widely accepted communications protocols and is designed to be scalable and accessible by multiple methods.
