I am a Quality Assurance professional with over 12 years of experience specializing in Cards and Payments systems, including end-to-end transaction processing, authorization flows, and financial system validations. My core expertise lies in ensuring the reliability, accuracy, and performance of payment applications across critical environments.

Throughout my career, I have worked extensively on card-based systems, handling functional and integration testing across modules such as authorization systems, transaction lifecycle management, and backend processing systems. I have strong experience in validating real-time transaction flows, identifying defects in complex financial systems, and ensuring compliance with business and regulatory requirements.

I bring hands-on expertise in:

Functional Testing, System Testing, and Integration Testing
Payment Gateway and Card Transaction Testing
API Testing and backend validation
Defect Reporting with clear root cause analysis
Test case design, execution, and traceability
I have a strong understanding of how payment ecosystems operate, including interactions between authorization systems, core processing systems, and settlement flows. This enables me to quickly identify issues that may impact transaction success rates, customer experience, or financial accuracy.

In addition to my technical skills, I focus heavily on delivering high-quality documentation and structured defect reports, which help development teams resolve issues efficiently. I am detail-oriented, proactive, and committed to maintaining high standards in every phase of testing.

I am currently open to freelance and part-time opportunities where I can support startups and growing businesses in building stable, secure, and scalable payment or web applications. I can work independently or collaborate with development teams to improve product quality and reduce production issues.

If you are looking for a reliable QA professional with strong domain expertise in payments and a practical, result-oriented approach, I would be happy to support your project.