Rahul S.

ISTQB Certified QA Engineer | 12+ Years of Experience | Manual & Automation Testing | AI-Driven Quality Engineering Are you looking for a QA professional who goes beyond traditional testing? I help businesses deliver reliable, secure, scalable, and high-performing applications by combining 12+ years of QA expertise with modern AI-enabled testing approaches, automation, and intelligent quality engineering. I specialize in testing complex Web Applications, Mobile Applications, SaaS platforms, Healthcare solutions, E-commerce systems, Payment Gateways, Subscription Management, and Enterprise Applications. My focus is not just finding bugs but identifying business risks, validating critical workflows, improving test coverage, and ensuring seamless end-to-end customer experiences. 🚀 My Core Expertise 1. AI-Enabled Testing & Modern QA AI-assisted test scenario and test case generation AI-powered test analysis and test coverage optimization Intelligent test documentation and defect analysis Exploring MCP (Model Context Protocol) integrations for AI-assisted QA workflows AI-enabled testing productivity and quality engineering Automation workflow optimization 2. Automation & API Testing Web and Mobile Application Testing API Testing and End-to-End Workflow Validation Automation Frameworks and Regression Automation REST API Testing Functional and Integration Testing Cross-browser and Compatibility Testing Smoke, Sanity, Regression, and Retesting 3. Zuora Billing & Subscription Management Zuora Billing and Subscription Management Testing Subscription Lifecycle Validation Product Catalog and Rate Plan Testing Billing, Invoicing, and Payment Validation Amendments, Renewals, and Cancellations Subscription Integrations and End-to-End Billing Workflows Billing Data Migration and Reconciliation 4. Payment Gateway & E-commerce Testing Payment Gateway Integration Testing Payment Authorization, Capture, Refunds, and Reversals Checkout and Order Management Workflows Subscription Payments and Recurring Billing Transaction Validation and Reconciliation Third-Party Payment Integration Testing End-to-End E-commerce Testing 5. Data Migration & Validation Source-to-Target Data Validation Database and Migration Testing Data Integrity and Reconciliation ETL Workflow Validation Data Mapping and Transformation Testing Legacy-to-New System Migration Billing and Subscription Data Migration Migration Testing and Post-Migration Verification 6. Healthcare Application Testing Healthcare Application QA HIPAA-Aware Testing and Privacy-Focused Validation Patient Data and Healthcare Workflow Testing User Access and Role-Based Permission Testing Data Integrity and Security-Oriented Testing Healthcare API and Integration Testing 7. Performance & Load Testing JMeter Performance Testing Load and Stress Testing Workload Modeling Performance Bottleneck Identification Test Plan Development Performance Analysis and Reporting 🛠️ Tools & Technologies AI-assisted QA tools and MCP-based workflows JIRA JMeter Postman API Testing Tools SQL / Database Validation Test Management Tools Agile / Scrum Methodologies Why Work With Me? ✔ 12+ years of hands-on QA experience ✔ ISTQB Certified Tester ✔ Strong understanding of SDLC and STLC ✔ Experience with Healthcare, SaaS, E-commerce, and Subscription platforms ✔ Business-focused and risk-based testing approach ✔ Strong expertise in Zuora Billing and Payment workflows ✔ Experience in data migration and end-to-end validation ✔ AI-enabled approach to improving QA efficiency and test coverage ✔ Clear communication, detailed reporting, and timely delivery My Commitment I believe quality is not just about finding defects; it is about preventing failures, protecting business-critical workflows, and delivering exceptional user experiences. Whether you need an experienced QA Engineer, an AI-enabled testing specialist, a Zuora Billing QA expert, or someone to validate complex payment and data migration workflows, I can help. Let's build better software through smarter testing, automation, and AI-powered quality engineering!