Hussan Jaffar

• Eliminated 5 critical pre-production security vulnerabilities - including reverse-engineering
exposure and transaction integrity failures - by designing and executing OWASP-aligned mobile
penetration tests (OWASP ZAP, Apktool, Hopper Disassembler) across every iOS and Android
release cycle.
• Reduced defect leakage to under 2% per release by owning end-to-end QA metrics reporting -
tracking pass rates, regression coverage, and open defect aging - and presenting sprint
dashboards to product and engineering stakeholders each sprint.
• Hardened payment transaction integrity across 250+ merchant configurations by implementing
iXGuard/DexGuard obfuscation with HMAC-based integrity checks, achieving PCI-DSS-equivalent
data protection with zero security incidents in production.
• Accelerated shift-left testing by building and managing structured test data sets, merchant
specific mocks, and environment stubs that enabled QA pipeline execution independent of live
backend services.
• Sustained a 300+ test case regression suite across iOS, Android, and web - covering functional,
exploratory, and usability testing scenarios - validating unique business logic for each of 250+
merchant configurations and maintaining 98%+ pass rates per release.
• Ran baseline performance and load tests using JMeter against payment gateway endpoints,
establishing benchmarks and flagging threshold breaches before every production release.
• Standardised iOS and Android build configuration across all merchant deployments using Xcode
and Android Studio, cutting manual release preparation errors by 40% per deployment cycle.
• Mentored 3 junior QA analysts in STLC, defect lifecycle management, and Agile ceremonies,
lifting team defect-detection consistency within two sprint cycles.

• Prevented downstream financial data corruption by identifying 8 critical defects before go-live
across ERP procurement, settlement, and reconciliation workflows - validated through SQL
based data integrity checks invisible to functional testing alone.
• Expanded automation coverage by 25% by engineering Selenium WebDriver/TestNG
(Java/Maven) test scripts for recurring ERP workflows, reducing manual re-test effort per sprint
by 30%.
• Enforced PCI-DSS data-access compliance by auditing and verifying role-based access controls
and user permission configurations across all ERP system roles before every production release.
• Established end-to-end test traceability across 200+ test cases in TestRail and Jira - covering
functional, integration, regression, and UAT phases - providing requirement-to-sign-off coverage
for every ERP module.
• Validated REST API integration endpoints across Finance, HR, and Inventory modules using
Postman, confirming correct request/response behaviour, error handling, and data mapping
across 15+ integration touchpoints.
• Ran baseline performance and load tests using JMeter against ERP transaction endpoints,
establishing performance baselines that flagged 3 threshold breaches before go-live.
• Closed 12+ specification gaps per sprint by collaborating with developers, BAs, and
stakeholders during Agile ceremonies, preventing defects before test execution.

• Achieved 95%+ developer acceptance rate on 120+ logged defects across Mortal Kombat
Mobile by writing precise, reproducible bug reports with full platform specs, severity ratings,
and step-by-step reproduction paths in Jira.
• Reduced uncaught release issues by expanding edge-case and exploratory test coverage across
character combat, in-app purchase payment flows, and online leaderboard transactions on
Android and iOS.
• Delivered consistent on-schedule release sign-off across a two-year engagement by designing
and owning structured regression test plans for every post-fix validation cycle on Android and
iOS.