Syanatuk System

Overview

A Flutter Windows desktop application that digitized every operation of a home-appliance maintenance business — from repair intake through diagnosis, warehouse, billing, and encrypted cloud backup — with role-based access and an automated release pipeline.

The problem

The business ran on paper and spreadsheets: no device tracking, no spare-parts visibility, no reliable backups, and no separation between staff roles.

Architecture

Clean Architecture with MVVM for long-term maintainability. Encrypted backups are pushed to Backblaze B2 for disaster recovery. A CI/CD pipeline produces signed builds and installers automatically.

Tech stack

Key features

• End-to-end device workflow: reception → inspection → diagnosis → repair → delivery
• Warehouse and spare-parts management with cost tracking
• Financial modules: invoices, revenue reports, debtor tracking
• Role-based access control (Admin, Receptionist, Technician, Manager)
• Statistics dashboards across multiple dimensions
• Remote encrypted backup to Backblaze B2
• Background updates and system-wide hotkeys
• Action logging for accountability

Engineering highlights

• CI/CD pipeline automates builds, code signing, and installer generation

Security considerations

• Role-based access control and an action log for every sensitive operation
• Encrypted off-site backups for disaster recovery

Outcome

• Deployed in production at the business
• Replaced manual paperwork across the full repair lifecycle