Sai Sukeerthi Kolagani

Qa Engineer @State Street

NJ, US

Responsibilities & Achievements:Designed & implemented a hybrid Playwright (Java + TypeScript) automation framework for online banking & payment flows, reducing regression cycle time by 65%.Developed REST Assured API test suites validating core banking APIs, FedNow/RTP rails & ISO 20022 messages, reaching 95%+ automation coverage on high-risk scenarios.Integrated Pact contract testing with Karate to eliminate downstream API defects, cutting API defect leakage by 45% while ensuring OWASP API Top-10 compliance.Automated mobile app regression testing using Appium 2.x with BrowserStack, ensuring seamless multi-device & cross-platform payment validation.Built payment data validation pipelines using Python pandas + Great Expectations, delivering 99.8% accuracy in ETL reconciliation across ACH, Visa/Mastercard/Amex & instant settlements.Virtualized dependencies with WireMock & Testcontainers (Kafka/Oracle/Postgres) to enable isolated, production-like QA environments, reducing test flakiness by 40%.Validated Kafka event streams for schema compatibility & exactly-once semantics, ensuring regulatory-grade transaction integrity.Conducted load, stress & chaos testing using k6, Gatling & Litmus to benchmark FedNow/RTP rails against SLA thresholds & resilience targets.Implemented PCI DSS 4.0 compliance QA automation covering MFA, card data masking & anti-phishing controls.Authored audit-ready traceability & evidence reports (requirements → test cases → results) for FFIEC/SEC audits, supporting enterprise cyber-disclosure readiness.