Switch NXT Testers

2 days ago


Chennai Pune, India KRG Technologies Full time ₹ 5,00,000 - ₹ 15,00,000 per year

Switch Tester with strong expertise in card-based payment systems and transaction switch platforms such as Switch NXT or FIS

  • Perform functional, regression, and integration testing of card transaction switches (Switch NXT, FIS).
  • Validate transaction routing and switching across POS, ATM, e-commerce, and other channels.
  • Conduct testing for debit/credit/prepaid card flows including ISO8583 message validation.
  • Design and execute test scenarios for online and batch transaction processing.
  • Utilize simulators for POS/ATM testing and analyze host and acquirer responses.
  • Validate authorization, clearing, and settlement flows.
  • Raise and track defects, work with developers to resolve issues.
  • Perform certification and compliance testing with card networks (Visa, MasterCard, etc.).
  • Ensure performance, scalability, and reliability of switch applications.
  • Participate in UAT and support go-live activities.
  • Hands-on experience with Switch NXT or FIS (IST/Connex) platforms (must-have).
  • Strong understanding of ISO8583 messaging format.
  • Familiar with end-to-end card transaction lifecycle Authorization, Clearing, and Settlement.
  • Experience with tools like POS simulators, ATM test tools, Host simulators.
  • Knowledge of card schemes (Visa, MasterCard, RuPay) and transaction types.
  • Good exposure to defect management and test case management tools (e.g., JIRA, ALM).
  • Ability to analyze logs and trace issues in switch environments.
  • Strong communication and coordination skills.
  • 7+ years of experience in cards & payments domain with switch testing experience


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