Worked on the Maintainerr repository to deliver three backend features focused on deployment reliability and security. Developed Kubernetes-ready health endpoints by refactoring health checks into a dedicated HealthService using TypeScript and TypeORM, enabling accurate liveness and readiness signaling for orchestrated environments. Enhanced startup resilience by introducing a configurable log level via environment variables, with robust fallback logic and unit tests using Jest to ensure stability. Strengthened webhook security by centralizing URL validation, enforcing http and https schemes across all notification agents. These changes improved observability, reduced misconfiguration risks, and ensured safer outbound notifications in Docker and Kubernetes deployments.