• Perform API testing for integrations using tools like Postman / REST clients. • Test routing logic. • Extend and maintain automated test suites workflows and APIs. • Build API automation frameworks (using JavaScript, Java, or Python). • Integrate automated tests into CI/CD pipelines for continuous validation. • Test success, failure, and edge-case scenarios (timeouts, retries, duplicate transactions). • Validate idempotency and error handling mechanisms. • Perform exploratory and manual testing for complex workflows. • Validate transaction data across APIs and databases. • Write and execute SQL queries for backend validation. • Conduct basic load and performance testing for payment APIs. • Validate system behaviour under high transaction volume. • Monitor and report latency, failure rates, and retries. • Support production deployment validation and pilot rollout. • Monitor transaction success rates and error logs post-release. • Collaborate on issue triaging and quick resolution.

• Own sprint gate quality review for the assigned development team before promotion • Design and execute scripted test cases aligned to requirement for the assigned capability area • Facilitate incremental user acceptance test execution and record findings • Maintain regression test suite for the assigned capability area; execute regression after every sprint deployment • Coordinate with QA engineers on other teams for cross-team integration testing at sprint close

• Drive the modernization, automation, and reliability of large-scale global network infrastructure. • Serve as the highest-level technical authority for network automation, design standards, deployment pipelines, and critical escalations. • Design and implement enterprise-scale Network-as-Code (NaC), Infrastructure-as-Code (IaC), and GitOps solutions using Terraform, Ansible, Python, and Git. • Build, optimize, and maintain CI/CD pipelines for network infrastructure. • Design, deploy, and support Kubernetes networking architectures, including Project Calico, OVN, VXLAN overlays. • Lead the design, modernization, and review of enterprise network architectures. • Serve as the Tier-4 escalation engineer for complex network incidents. • Lead root cause analysis (RCA) and drive long-term remediation and continuous improvement initiatives.

• entwickelst und optimierst Testautomatisierungslösungen für Web- und Mobile-Anwendungen • konzipierst und pflegst skalierbare Testframeworks sowie automatisierte Testfälle • definierst Teststrategien und sorgst für eine hohe Softwarequalität • integrierst Tests in CI/CD-Pipelines und verbesserst kontinuierlich Prozesse • arbeitest eng mit Entwicklung, Produktmanagement und Stakeholdern zusammen • coachst Kolleg:innen und etablierst Best Practices der Testautomatisierung