Worked on the datalens-tech/datalens repository to implement deployment-time control over user signups, enhancing administrative governance and security. Introduced the AUTH_SIGNUP_DISABLED environment variable and integrated it into docker-compose and docker-compose.override.yaml files, allowing administrators to enable or disable user signups without modifying application code. This feature was delivered through careful configuration management using YAML and DevOps practices, ensuring that infrastructure changes could be managed efficiently at deployment. The approach focused on improving operational flexibility and reducing the need for code-level changes when adjusting signup policies, reflecting a methodical and infrastructure-oriented engineering style during the month’s development cycle.