Mohamed Rinaz Ansari Musthafa

Senior Quality Assurance Specialist

Open to offers · Member since 20 Sep 2026

Message

Location: Chennai, India

Desired salary: Unspecified

Work preference: Remote Only

Experience level: Senior

About

Professional summary

I am a Senior Quality Assurance Specialist with more than 10 years of experience in banking, cards, and payments technology. I specialize in merchant acquiring platforms, payment processing, card network compliance, and end-to-end quality assurance for business-critical systems.

I have deep domain expertise in Visa and Mastercard scheme compliance, ISO8583 messaging, clearing and settlement, dispute management, merchant onboarding, and payment integrations. My experience includes supporting regulatory certification cycles and validating platform compliance with PCI DSS requirements.

I am experienced in functional, regression, integration, batch, API, database, web, mobile, and automation testing. I use SQL and Python for backend validation, test data management, QA productivity utilities, and automation initiatives.

I work effectively in Agile delivery teams and collaborate closely with Product Owners, Scrum Masters, developers, business analysts, and stakeholders. I contribute to user story estimation, sprint planning, test case walkthroughs, demos, defect management, and root cause analysis.

I have leveraged GitHub Copilot and enterprise GenAI tools to streamline repetitive QA activities and build Python-based testing utilities. I also maintain test documentation, improve regression coverage through Gherkin-based BDD cases, and mentor junior QA analysts to support high-quality delivery.

Tech stack & tools

Working toolkit

Experience

Career history

Senior Software Quality Assurance Specialist Fiserv (Omnipay Platform)

Apr 2020 – Present

Conduct card network regulatory compliance testing for merchant acquiring and dispute modules, ensuring alignment with Visa, Mastercard, and PCI DSS requirements. Support certification cycles, scheme testing, production releases, and end-to-end regression validation for payment solutions.

Analyze regression outcomes and collaborate with developers and business analysts to resolve complex functional issues. Validate REST request and response payloads, JSON structures, backend payment integrations, and merchant onboarding workflows.

Partner with Product Owners and Scrum Masters on high-level user story estimation and sprint planning. Manage Confluence documentation, maintain Gherkin-based BDD regression cases, conduct defect root cause analysis, present demos, mentor junior QA analysts, and build Python QA productivity tools using GitHub Copilot.

Software Quality Assurance Analyst Cognizant Technology Solutions

Jan 2016 – Apr 2020

Performed regression testing and end-to-end validation for the Fiserv Omnipay merchant acquiring platform as a contractor. Supported testing activities for payment and merchant-acquiring capabilities.

Executed cross-browser and mobile compatibility testing for Sallie Mae Bank student and personal loan modules across Android, iOS, Chrome, and Firefox. Designed and executed regression test cases for Fiserv Output Solutions, including plastic card manufacturing and electronic document delivery systems.

Participated in Agile ceremonies, test case walkthroughs, and stakeholder demos. Developed foundational Selenium automation knowledge using Java and Python and contributed to regression test optimization initiatives.