QA Engineer & Payment Systems Expert
Ensuring the reliability and quality of digital platforms for logistics management and non-profit organizations. Experienced in validating complex payment gateway testing (Stripe, Lloyds, WorldPay, Paypal), tax compliance logic, and managing end-to-end defect lifecycles.
Results-driven QA Engineer with a strong focus on Logistics Management System, Charity Management and charity compliance platforms. I validate critical business logic, including Gift Aid tax reclaim processes and multi-currency recurring donation flows via Stripe and Global Pay, ensuring software meets security, compliance, and usability standards.
Read Full Bio & Philosophy →Deep expertise in validating Lloyds, WorldPay, GlobalPay, Paypal and Stripe recurring logic.
HMRC Gift Aid declaration logic, Tax reclamation workflows, and financial reporting.
End-to-End Bug Life Cycle ownership using Jira. Root cause analysis and severity triage.
Postman automation and HTTPie for payment endpoints, payload validation, and response code checks.
SQL injection testing, data consistency verification, and complex query validation.
Responsive validation across Mobile/Web to ensure seamless UI/UX on all devices.
Engineered the test strategy for a complex donation ecosystem. Validated Stripe & Global Pay testing, specifically focusing on recurring donation failure handling.
Spearheaded QA for the Gift Aid module. Created comprehensive documentation for declaration workflows and validated tax reclamation logic.
Executed rigorous functional testing for a shipment tracking platform. Verified real-time status updates and route optimization logic.
Security and Functional testing for a high-traffic donation portal. Ensured donor data privacy (GDPR compliance) and smooth volunteer coordination.
Performed security and functional testing on a high-traffic donation portal, maintaining GDPR-compliant data protection and ensuring smooth workflows.
Tested a custom CMS with "Drag-and-Drop" builders. Verified content rendering, image optimization, and backend admin panel functionality.
Executed security and functional testing for a large-scale donation portal, ensuring donor data privacy and efficient volunteer coordination.
A deep dive into the QA validation of the iCHARMS Call Center Ecosystem. I executed comprehensive functional and logic testing for this enterprise-grade tele-fundraising platform, ensuring high-volume campaign stability.
Validated backend calculation logic for critical dashboard metrics including "Calls Made Today," "Pledges," and "Total Raised." Ensured 100% accuracy in data synchronization between agent actions and the admin view.
Tested the end-to-end "Create Batch" and "Assign to Agent" workflows. Verified that batches containing thousands of donors are correctly locked to specific agents to prevent data collision and duplication.
Audited the "Add Donors to Batch" process. Verified secure handling of sensitive fields (Mobile/Email) and tested search filters to ensure agents can instantly retrieve donor history without performance lag.
Leading the QA division for multiple clients.
• Key Achievement: Successfully Tested and validated 3 major payment gateways (Lloyds, WorldPay, Stripe) with 0 post-production critical defects.
• Responsibilities: Test Planning, API Automation (Postman and HTTPie), and Defect Triage.
Completed rigorous training in Manual Testing, Automation basics, and SQL Database management. Mastered the STLC (Software Testing Life Cycle).
Built a strong foundation in financial accounting and business logic, which directly aids in testing FinTech applications today.
At sayedasif.com, we provide expert Quality Assurance (QA) and software testing services, with a focus on validating complex payment gateways, compliance logic, API workflows, and end-to-end defect lifecycle management to ensure robust, reliable digital platforms.
Our expertise spans logistics management systems, non-profit donation platforms, and financial compliance environments, including rigorous testing of payment integrations like Stripe, Lloyds, and WorldPay, as well as tax and compliance logic validation.
Professional QA testing ensures that your software performs securely and efficiently under real-world conditions. It helps identify critical issues early, reduces risk of post-launch defects, improves user satisfaction, and strengthens system security—especially for mission-critical applications such as payment processing and compliance modules.
Quality is ensured through a structured testing approach that combines functional testing, API validation (using tools like Postman and HTTPie), cross-platform compatibility checks, SQL database integrity verification, and comprehensive defect tracking—from test planning through final deployment.