PGNI Hospital StorageManagement

The system

At the Πανεπιστημιακό Γενικό Νοσοκομείο Ιωαννίνων (Ioannina University Hospital, Π.Γ.Ν.Ι.) one of the labs tracked reagent stocks and equipment in a legacy C# WinForms application that had not been touched in years. The lab needed a replacement that ran on Windows, did not require an internet connection, and stored data locally on the lab machine without IT-department friction. As volunteer civic-tech work, I built a Tauri 2 + Rust + React 19 desktop app with a local SQLite database, distributed as a signed NSIS installer the hospital’s IT team can deploy on its own. In production, replacing the legacy system.

Architecture

• Frontend: React 19 + Vite + TanStack Router/Query for the UI
• Backend: Rust via Tauri 2 IPC, all data access and filesystem operations through a typed Rust API
• Database: SQLite with Drizzle for schema + migrations, local to the machine
• Distribution: signed NSIS installer for Windows, side-by-side install with the legacy app so the lab can switch over at its own pace
• No external dependencies: the app runs offline, no server, no cloud, no auth provider

My contribution

I built the whole app on my own. The architectural decision that mattered most was choosing Tauri 2 over Electron: Tauri’s Rust core compiles to a ~12 MB binary (vs Electron’s 100 MB+), starts in under a second, and the hospital’s antivirus does not flag it as suspicious like Electron apps often are on locked-down Windows boxes. The Rust backend handles all data access through a strict typed API surface, so the React frontend never touches the filesystem directly — adds a layer of safety on a machine the lab cannot reinstall easily. The NSIS installer is signed and ships side-by-side with the legacy app, so the lab team can switch over at their own pace without losing access to historical records.

Outcomes

• Replaced a legacy C# WinForms application with a modern stack
• 12 MB signed Windows binary, runs offline, no IT-department friction
• NSIS installer the hospital IT team deploys themselves
• Volunteer contribution to a Greek public hospital, in production

Links

• Repo: github.com/jimrarras/StorageManagement

Related work

• Zosimades Healthcare Ops Stack: other volunteer civic-tech work for a Greek institution, but a full ops platform rather than a departmental desktop app