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Automation Test Engineer

Job in O'Fallon, St. Charles County, Missouri, 63366, USA
Listing for: Tech Mahindra
Full Time position
Listed on 2026-02-14
Job specializations:
  • Software Development
    Software Engineer
Salary/Wage Range or Industry Benchmark: 90000 - 100000 USD Yearly USD 90000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: Automation Test Engineer - Payments

A Bachelor’s or Higher Degree is the minimum entry required for the position

Job Description
  • Skill Set : Java,Rally,Selenium,Cucumber,T3,payment simulation,Paragon,Fin Sim

We are seeking a skilled Payment Tester with hands‑on experience in payment systems, specifically in Authorization, Clearing processes, and ISO message formats. The ideal candidate will play a critical role in validating payment flows, ensuring compliance with standards, and supporting end‑to‑end testing of payment transactions.

Key Responsibilities
  • Perform functional and integration testing of payment systems with a focus on transaction flows.
  • Validate
    Authorization
    and
    Clearing
    processes across various payment scenarios.
  • Analyze and test
    ISO 8583
    and
    ISO 20022
    message formats for accuracy and compliance.
  • Collaborate with development and business teams to understand requirements and create detailed test cases.
  • Execute test plans, log defects, and ensure timely resolution.
  • Work closely with Mastercard teams to align testing with network specifications and updates.
  • Support regression testing and automation initiatives where applicable.
Required Skills & Experience
  • Exposure to agile and waterfall testing methodologies and tools such as RALLY and ALM.
  • Experience of working with other developers to ensure that systems are designed for reliability, performance and testability
  • Experience testing across a variety of platforms: web and mobile user interface, APIs (REST and SOAP), and Mainframe and UNIX
  • Exposure in building and using automation frameworks using technologies:
    Java, JUnit, Selenium, JBehave, Soap UI/Pro, REST, JSON and XML.
  • Expert knowledge of Payments Products (Credit/Pre‑paid/Debit)
  • Knowledge of payment simulation tools (Paragon, Fin Sim, T3 or similar)
  • Knowledge of ISO payment protocols (8583) desirable.
Preferred Qualifications
  • Experience with other payment networks (e.g., Visa, Amex) is a plus.
  • Knowledge of automation frameworks and scripting languages.
  • ISTQB or equivalent testing certification

Note:

The pay range for this role is $90,000- $100,000 per annum including any bonuses or variable pay. Tech Mahindra also offers benefits like medical, vision, dental, life, disability insurance and paid time off (including holidays, parental leave, and sick leave, as required by law). Ask our recruiters for more details on our Benefits package. The exact offer terms will depend on the skill level, educational qualifications, experience, and location of the candidate.

AI tools may assist in the recruitment process; however, all hiring decisions are made by the recruitment team based on a comprehensive evaluation of candidates.

“Tech Mahindra is an Equal Employment Opportunity employer. We promote and support a diverse workforce at all levels of the company. All qualified applicants will receive consideration for employment without regard to race, religion, color, sex, age, national origin, or disability. All applicants will be evaluated solely on the basis of their ability, competence, and performance of the essential functions of their positions with or without reasonable accommodations.

Reasonable accommodations also are available in the hiring process for applicants with disabilities. Candidates can request a reasonable accommodation by contacting the company ADA Coordinator at ADA_A .”

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