Mary Liag worked on open-telemetry/opentelemetry-js-contrib and several OpenTelemetry repositories, focusing on automation, instrumentation, and specification compliance. She enhanced PostgreSQL observability in Node.js by ensuring ES module compatibility for pg-pool instrumentation, addressing tracing gaps across import styles using JavaScript and Node.js. In addition, Mary implemented automated contributor feedback workflows using GitHub Actions and YAML, spanning five OpenTelemetry projects. These workflows verified contributor membership and collected feedback via dynamic surveys, streamlining onboarding and improving the contributor experience. Her work demonstrated a strong grasp of API integration and CI/CD, delivering targeted, low-risk changes that improved reliability and process efficiency across the ecosystem.