QA Analyst - Payment & API Testing Expert

GCS Recruitment; Chattanooga (TN); On-site; USD 65,000 - 85,000; Full time

Job summary

GCS Recruitment is seeking a detail-oriented QA Analyst to support testing of integrated transaction and payment platforms. The role focuses on ensuring API, payment gateway, and banking integrations work seamlessly across customer-facing applications.

You'll develop test plans, execute functional, integration, regression, and end-to-end tests, validate API requests with Postman, and collaborate with developers to verify fixes. Security and data integrity are a priority.

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.

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.

Skills

QA Testing

Test Analysis

API Testing

Analytical Thinking

Communication Skills

Tools

Postman

Job description

GCS Recruitment is seeking a detail-oriented QA Analyst to support testing of integrated transaction and payment platforms. The role focuses on ensuring API, payment gateway, and banking integrations work seamlessly across customer-facing applications.

You'll develop test plans, execute functional, integration, regression, and end-to-end tests, validate API requests with Postman, and collaborate with developers to verify fixes. Security and data integrity are a priority.