Position Overview

We are seeking a detail-oriented QA Analyst to support the testing and validation of integrated transaction and payment platforms. This role focuses on ensuring seamless functionality across APIs, third-party integrations, payment systems, and customer-facing applications. The ideal candidate will have hands-on experience testing payment workflows, transaction processing, and complex integrated environments.

Responsibilities

  • Develop and execute test cases, test plans, and test scripts.
  • Perform functional, integration, regression, system, and end-to-end testing.
  • Validate API requests and responses using Postman.
  • Review payloads, response codes, and system behavior to ensure functionality meets requirements.
  • Test integrations between multiple applications, services, and third-party platforms.
  • Identify, document, and track defects through resolution.
  • Validate transaction flows and data movement across systems.
  • Collaborate with developers and stakeholders to troubleshoot issues and verify fixes.
  • Support release testing, UAT activities, and production validation.
  • Ensure application reliability, security, and data integrity.

Required Qualifications

  • 3+ years of experience in QA Testing, Software Testing, or Test Analysis.
  • Strong hands-on experience with Postman, API Testing, request routing, response validation, and test execution.
  • Experience testing payment processing systems, payment gateways, payment portals, online payment solutions, banking applications, merchant services, or card-based platforms.
  • Experience working with credit card, debit card, ACH, transaction processing, digital payments, or banking systems.
  • Knowledge of PCI-DSS standards and payment security best practices.
  • Experience creating and executing test cases, test scripts, and defect reports.
  • Experience with integration, regression, system, and end-to-end testing.
  • Experience working in organizations such as Fiserv, FIS, Global Payments, PayPal, Stripe, Adyen, Marqeta, Galileo, NCR, Transcard, or similar payment and fintech environments.
  • Strong analytical, troubleshooting, and communication skills.

What You Will Learn

  • Enterprise-scale payment platform testing.
  • End-to-end transaction lifecycle validation.
  • Advanced API testing and integration testing techniques.
  • Payment security and compliance best practices.
  • Testing strategies for highly integrated, mission-critical platforms.

GCS is acting as an Employment Business in relation to this vacancy.

COMPETITIVE SALARY
Added 28/10/2026
Reference: GCS 103_1793226421

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