Developed a per-user JSON configuration system for domain management within the is-a-dev/register repository, focusing on scalable and auditable domain settings. The work involved implementing initial CNAME configuration, adding a per-user email field, and updating CNAME targets from .com to .net, all tracked through version-controlled commits. Leveraging skills in configuration management, domain management, and JSON, the developer established a foundation for deterministic and maintainable domain policy. The approach reduced manual configuration time and improved data integrity by enabling incremental schema evolution and file I/O operations, supporting easier onboarding and a more robust configuration lifecycle for domain management processes.