Built Armenian Sound end-to-end as a live production marketplace for licensed digital audio. I designed the full-stack architecture and implemented authentication, customer accounts, catalog/search, cart and checkout, payment integrations, order management, admin/back-office tools, PostgreSQL/MongoDB persistence, and secure digital delivery via private object storage and expiring signed URLs. The public repo is a sanitized portfolio demo; production credentials, payment internals, and security-sensitive infrastructure are intentionally excluded.