QA Engineer - Payment

Deliver end-to-end functional and non-functional testing for mobile, backend, and payment systems supporting secure fintech workflows. Partner with product managers, developers, and stakeholders to ensure stability, security, and compliance of third-party payment workflows, payment gateways, and merchant acquiring. Perform backend API testing and database validation, identify security risks, and participate in Agile sprints aligned with QA cycles while staying current on payment and telecom security and compliance standards.