• Design, build, and maintain internal tools and comprehensive frameworks supporting unit, integration, API, and UI testing using modern approaches with Jest, Locust, Flutter (iOS & Android) and Playwright • Implement containerized, reproducible test environments using Docker and CI/CD pipelines to support local and large-scale execution • Contribute to integration testing strategies for inter-service validation and shared dependencies • Architect and evolve the load, scale, and performance testing systems used to understand the limits of our system, verify system resilience and protect our critical user journeys • Build data-generation pipelines to create realistic workloads and performance test scenarios • Use APM tools (Datadog RUM, APM, DBM preferred) for build-over-build monitoring and troubleshooting • Evaluate and implement AI-driven tools for automated test generation and maintenance • Integrate self-healing, intelligent failure analysis, and test recommendations into CI pipelines • Partner with teams to adopt the tools and frameworks built by Test Infrastructure, with a shift-left strategy in mind • Champion best practices around metrics-based test infrastructure observability and monitoring • Mentor teammates on software architecture and design patterns