The rapid expansion of permanent GNSS networks across Europe and the Mediterranean has generated a large, heterogeneous and operationally complex data ecosystem. Although RINEX files are widely available, their systematic acquisition, normalization and structured indexing remain challenging tasks. This work introduces Mediterranean GNSS Archive (MGA), a modular and distributed software infrastructure designed to automate the entire GNSS data lifecycle, including acquisition, normalization, quality control, and metadata ingestion. The architecture relies on independent per-network processes, extensible specialized workers, and a strict separation between write-oriented services and read-only REST APIs. We describe the architectural choices, the process-orchestration model, the...